Search Results
Monday, May 9th, 2011
(Beyond Pesticides, May 9, 2011) The Endocrine Disruptor Exchange Inc. (TEDX), founded by Theo Colborn, PhD, has released a list of chemicals with the potential to affect the endocrine system. According to TEDX, every chemical on the TEDX List has one or more verified citations to published, accessible, primary scientific research demonstrating effects on the endocrine system. Endocrine disruptors are chemicals that impact traditional endocrine glands, their hormones and receptors such as estrogens, anti-androgens, and thyroid hormones. To date there are approximately 800 endocrine disruptors on the TEDX List. Download the TEDX List (Excel) Many everyday chemicals that people are exposed to can wreak havoc on the bodyâs endocrine system. Pesticides such as triclosan, atrazine, permethrin and many others have been associated with effects on the bodyâs hormone system. Visit the Pesticide Induced Disease Database for more on the chemicals linked to endocrine disruption. Endocrine effects include direct effects on traditional endocrine glands, their hormones and receptors such as estrogens, anti-androgens, and thyroid hormones, as well as signaling cascades that affect many of the bodyâs systems, including reproductive function and fetal development, the nervous system and behavior, the immune and metabolic systems, the liver, bones and many other organs, glands […]
Posted in Announcements, Chemicals, Disease/Health Effects, Endocrine Disruption | No Comments »
Wednesday, April 27th, 2011
(Beyond Pesticides, April 27, 2011) Whole Foods Market has introduced its Eco-Scaleâ⢠Rating System â an industry-first set of tiered, green household cleaning standards â to help shoppers make smarter, greener choices. Product ingredients will be evaluated and those that do not meet the standards set, such as the antimicrobial triclosan, phosphates and phlalates, will not be sold at Whole Foods Market. Whole Foods Market is the first national retailer to provide its own comprehensive, color-coded rating system for household cleaners. Under the new evaluation system, products will be ratedââred, orange, yellow or greenââbased on the specific set of environmental and sourcing standards each product meets. The company is committed to working with vendors to evaluate and independently audit every product in its cleaning category. Each product will be required to meet â at the very minimum â the new baseline orange standard by Earth Day, 2012. Red-rated products do not meet the Eco-Scale standards and will not be sold at Whole Foods Market. Products rated Eco-Scale Green, the highest level of Whole Foods Marketâs new standard, will contain no ingredients with significant environmental or safety concerns and required to have full transparency, disclosure of ingredients on packaging by April […]
Posted in Whole Foods | No Comments »
Wednesday, April 13th, 2011
(Beyond Pesticides, April 13, 2010) In response to a petition submitted to the U.S. Environmental Protection Agency (EPA) calling for a ban on the non-medical uses of triclosan, Beyond Pesticides is again urging the agency to halt the use of the antibacterial triclosan in consumer products. Citing recent scientific evidence detailing hormone disruption, impaired fetal development, water and crop contamination, the petitioners state that given the emerging science and the violation of numerous environmental statues by triclosanâs use constitutes placing a ban on the chemical. In comments submitted in support of the petition, Beyond Pesticides state that such a dangerous chemical has no place on the consumer marketplace. âThe nonmedical uses of triclosan are frivolous and dangerous, creating serious long-term health problems and environmental hazards associated with its continued use. EPA has a responsibility to ban consumer triclosan use in a marketplace where safer alternatives are available to manage bacteriaâ said Jay Feldman, executive director of Beyond Pesticides. Triclosanâs impact on the consumer market has been aided by a false public perception that antibacterial products are best to protect and safeguard against potential harmful bacteria. However, research into triclosanâs health and environmental impacts shows triclosan does more harm than good, […]
Posted in Antibacterial, Pesticide Regulation, Triclosan | 1 Comment »
Wednesday, March 16th, 2011
(Beyond Pesticides, March 16, 2011) Congresswoman Louise Slaughter (D-NY) introduced legislation last week that seeks to help protect Americans from widespread antibiotic overuse in food animal production. Antibiotic use in agriculture, as well as in antimicrobial soaps containing materials such as triclosan, offer little to no benefit for public health, but instead contributes to increases in the growth of resistant bacteria. This makes antibiotic and antibacterial resistance a national health concern, due to the fact that it can make infections difficult or impossible to treat. Rep. Slaughterâs bill, H.R. 965 â the Preservation of Antibiotics for Medical Treatment Act, would preserve the effectiveness of antibiotics used to treat human disease by requiring the Food and Drug Administration (FDA) to revoke approval of antibiotics for non-therapeutic purposes unless the agency determines that the drugs do not produce unsafe levels of antibiotic resistance. The bill would allow farmers to continue to treat sick animals with antibiotics. âAntibiotic resistance is a major public health crisis, and yet antibiotics are used regularly and with little oversight in agriculture,â said Rep. Slaughter. The main culprits are confined animal feeding operation (CAFO) operators that routinely add human antibiotics to livestock feed for non-therapeutic purposes, such as […]
Posted in Alternatives/Organics | No Comments »
Wednesday, March 9th, 2011
(Beyond Pesticides, March 9, 2011) A recent study reports that the underlying cause of a fatal outbreak of P. aeruginosa in a hospital came from the contamination of triclosan soap dispensers, which acted as a continuous source of the bacterium. The contaminated triclosan soap infected the hands of health care workers and then patients, since triclosan is shown to have no effect on P. aeruginosa -a bacterium frequently associated with hospital-acquired infections. Authors of the study recommend alcohol-based sanitizers where appropriate, instead of triclosan soaps. The study, âMolecular Epidemiology of a Pseudomonas aeruginosa Hospital Outbreak Driven by a contaminated Disinfectant-Soap Dispenser,â published online in PLoS One, investigates a fatal epidemic of P. aeruginosa that occurred in a hematology unit in Italy. The researchers found that patients became indirectly infected (e.g., during central venous catheter handling through contaminated items) and the triclosan soap dispenser acted as a common continuous source of P. aeruginosa infection. Since P. aeruginosa is intrinsically not susceptible to triclosan, the use of triclosan-based disinfectant formulations should be avoided in those health care settings hosting patients at high risk of P. aeruginosa infection, the authors conclude. Immunocompromised patients, especially chemotherapy patients, are especially at risk. Soap dispensers in […]
Posted in Antibacterial, Health care, Triclosan | 1 Comment »
Tuesday, February 22nd, 2011
(Beyond Pesticides, February 22, 2011) After witnessing a patient’s condition improve upon discontinuing the use of antibacterial products containing the active ingredient triclosan, Gerard Guillory, M.D. of Denver, Colorado believes that several of his patients are experiencing health problems caused by daily exposure to the chemical. Dr. Guillory told local ABC 7 News: Denver Channel that he was treating his patient, Mary Lou Simanovich, for hyperthyroidism and asked her about antibacterial soap, which she had been using for years. After Ms. Simanovich stopped using soaps containing triclosan, both she and Dr. Guillory noticed improvements in her condition and overall health. “I feel better now. That’s all I can say and I think there’s an association,” said Ms. Simanovich to the Denver Channel. Antibacterial agents like triclosan, found in many antibacterial products, are linked to a host of adverse health and environmental effects including hormone disruption, possible impaired fetal development, and water and food contamination. Triclosan is an endocrine disruptor and has been shown to affect male and female reproductive hormones and is also shown to alter thyroid function. âMy suspicion is that if itâs damaging the thyroid, itâs probably damaging other organs in the body,â said Dr. Guillory to the […]
Posted in Antibacterial, Thyroid Disease, Triclosan | No Comments »
Friday, February 4th, 2011
(Beyond Pesticides, February 4, 2011) In response to continued public concern over the presence of dangerous chemicals in common household products, legislators and advocates in 30 states across the country and the District of Columbia have announced legislation aimed at protecting children and families from harmful chemicals. Despite well-funded opposition from the chemical industry, 18 state legislatures have already passed 71 chemical safety laws in the last eight years by an overwhelming, bipartisan margin â with more to come this year. Congress has also begun to take action on the matter, after being criticized for lagging behind, in the form of initiating a review of the 1976 Toxic Substances Control Act (TSCA) this week. The TSCA is the federal law that governs the control of chemicals that pose an unreasonable risk to human health or the environment. Dangerous chemicals, including pesticides, can be commonly found in household products ranging from cosmetics to toys to fabrics. One of the most prevalent of these substances, the antimicrobial triclosan, has been linked to a range of adverse health and environmental effects including skin irritation, allergy susceptibility, endocrine disruption, and increased risk of antibiotic resistance to tainted water, dioxin contamination, and destruction of fragile […]
Posted in Pesticide Regulation, State/Local | No Comments »
Thursday, February 3rd, 2011
(Beyond Pesticides, February 3, 2011) Following numerous developments on the antibacterial pesticide triclosan in consumer products over the last year, including several published studies highlighting the serious adverse effects of exposure, the submission of a federal petition calling for the ban of the chemical, and increased consumer awareness, experts are urging companies to take precautions and remove the ingredient from their products. Newest on the list of companies to remove triclosan is GlaxoSmithKline, which has removed the chemical from its Aquafresh and Sensodyne toothpastes, as well as its Corsodyl mouthwash. Recently Colgate-Palmolive, makers of Colgate Total and Softsoap antibacterial hand soaps, has removed triclosan from most of its products, excluding its Total brand toothpaste, a line that the company claims fights gingivitis. However, as Elizabeth Salter Green, director of ChemTrust, a UK-based health and environmental organization, says in Cosmetics Design: âIf one eats the right foods and maintains correct dental hygiene, then triclosan, or other antibacterial agents are not needed.â Antibacterial Soap: Public Health Survey In response to a recent survey on antibacterial soap by the chemical industry, Beyond Pesticides has released its own survey questions about the health and environmental issues surrounding antibacterial cleansers and asks that you share […]
Posted in Antibacterial, Triclosan | No Comments »
Wednesday, January 19th, 2011
(Beyond Pesticides, January, 19, 2011) A new study finds for the first time that the bodies of virtually all U.S. pregnant women, and possibly their unborn children, carry multiple chemicals, including some used in common products such as non-stick cookware, processed foods and personal care products. Median levels of the controversial chemical triclosan are found to be higher in pregnant women compared with nonpregnant women. This new data highlights the urgency needed to remove toxic chemicals like triclosan from consumer products. While the Centers for Disease Control (CDC) has published previous reports on chemical levels in the general population, this is the first study to look at a broad range of chemicals specifically in pregnant women. Entitled, âEnvironmental Chemicals in Pregnant Women in the US: NHANES 2003-2004,â the study analyzed biomonitoring data from the National Health and Nutritional Examination Survey (NHANES) to characterize both individual and multiple chemical exposures in U.S. pregnant women. Researchers analyzed the data for 163 chemicals and detected about three-quarters of them at varying levels in some or all of the women. They found almost all â 99 to 100 percent â of the pregnant women carry polychlorinated biphenyls (PCBs), organochlorine pesticides, perfluorinated compounds, phenols such […]
Posted in Triclosan | 1 Comment »
Monday, January 10th, 2011
(Beyond Pesticides, January 10, 2011) Since the submission of a federal petition last year calling for the ban of the antibacterial pesticide triclosan from consumer products, along with numerous published studies highlighting the serious adverse effects resulting from exposure, as well as increased consumer awareness, major companies are succumbing to public pressure to remove this chemical from their products. Recently Colgate-Palmolive, makers of Colgate Total and Softsoap antibacterial hand soaps, has removed triclosan from most of its products. Numerous developments last year, including the petition to ban triclosan submitted by Beyond Pesticides and Food and Water Watch along with over 80 environmental and public health groups, citing triclosanâs violation of numerous federal statues, as well as the increasing scientific data on triclosanâs hormone disrupting effects and long-term environmental contamination, have placed triclosan under media and congressional scrutiny. Companies are now quietly moving to remove triclosan from their products ahead of potential regulatory action and increasing consumer and retailer rejection. Colgate-Palmolive is reformulating its popular soap products to exclude triclosan. The orange-colored âËUltra-Palmolive Antibacterial,â the antibacterial dish-cleaning liquid will no longer contatin triclosan as its active ingredient and will no longer make the claim of being a âhand soap,â but will […]
Posted in Antibacterial, Triclosan | 1 Comment »
Friday, January 7th, 2011
(Beyond Pesticides, January 7, 2011) The Office of the Inspector General (OIG) for the U.S. Environmental Protection Agency (EPA) has released a report criticizing the agencyâs lack of regulation concerning antimicrobial products. Citing a number of failures, the report finds that the EPAâs Antimicrobial Testing Program (ATP) has been largely inadequate in testing products to ensure safety and efficacy, and has failed to remove products that did not meet program standards. This report is especially of concern because some antimicrobials, such as triclosan, are known to cause dangerous public health and environmental hazards. Triclosan is one of the most prevalent antibacterial compounds found in products ranging from soaps and toothpastes to fabrics and toys. Studies have increasingly linked triclosan (and its chemical cousin triclocarban), to a range of adverse health and environmental effects, from skin irritation, allergy susceptibility, bacterial, endocrine disruption and compounded antibiotic resistant, tainted water, and dioxin contamination to destruction of fragile aquatic ecosystems. Through ATP, antimicrobial products including hospital disinfectants and tuberculocides are meant to be tested to ensure that they meet health standards and that the claims on the product labels are accurate. However, OIG has found that âEPAâs implementation of the ATP has not delivered […]
Posted in Antibacterial, Label Claims, Triclosan | No Comments »
Wednesday, January 5th, 2011
(Beyond Pesticides, January 5, 2011) Your voice is critical in generating public comments on a petition, published in the Federal Register, to ban the antibacterial chemical triclosan. As you may know, this chemical, now found in the bodies of 75% of the U.S. population, is linked to endocrine disruption, bacterial and antibiotic resistance, dioxin contamination, and contaminated fish and biosolids. We have five more weeks âuntil February 7, 2011â to let EPA know that triclosan must be banned to protect the public, workers and the environment. Click here for the document you can use to publicize the public comment period on Ban Triclosan petition or email info@beyondpesticides for the word version. EPA published in the Federal Register a petition, filed by 82 public health and environmental groups, to ban the hazardous antimicrobial/antibacterial pesticide triclosan for non-medical use. The chemical is found in products from clothing to soaps. The Federal Register notice (Petition for a Ban on Triclosan, 75 FR 76461, December 8, 2010) announces a public comment period until February 7, 2011 on the need to ban triclosan under numerous federal statutes from pesticides, clean water, safe drinking water, to endangered species. SUGGESTED ACTION AND SAMPLE PUBLIC COMMENT: Please send […]
Posted in Announcements, Antibacterial, Pesticide Regulation, Triclosan | 9 Comments »
Friday, December 10th, 2010
(Beyond Pesticides, December 10, 2010) Announcing a 60-day public comment period, the U.S. Environmental Protection Agency (EPA) yesterday published in the Federal Register a petition filed by 82 public health and environmental groups, led by Beyond Pesticides and Food and Water Watch, to ban the controversial antimicrobial/antibacterial pesticide triclosan, found in products from clothing to soaps, for non-medical use. The Federal Register notice (Petition for a Ban on Triclosan, 75 FR 76461, December 8, 2010) invites the public to comment until February 7, 2011 on the need to ban triclosan under numerous federal statutes. The petition, filed on January 14, 2010, identifies pervasive and widespread use of triclosan and a failure of EPA to: (i) address the impacts posed by triclosanâs degradation products on human health and the environment, (ii) conduct separate assessment for triclosan residues in contaminated drinking water and food, and (iii) evaluate concerns related to antibacterial resistance and endocrine disruption. The petition cites violations of numerous environmental statutes, including laws on pesticide registration, the Clean Water Act, Safe Drinking Water Act, and Endangered Species Act. It also documents that triclosan is no more effective than regular soap and water in removing germs and therefore creates an unnecessary […]
Posted in Announcements, Antibacterial, Pesticide Regulation, Triclosan | No Comments »
Wednesday, December 8th, 2010
(Beyond Pesticides, December 8, 2010) A new study finds that oral contraceptives are not the main culprit in estrogenic pollution of U.S. rivers and drinking water. Instead, the contribution of contraceptives is quite small compared to other human, industrial and agricultural sources, including pesticides. Recent observed feminization of aquatic animals has raised concerns about estrogenic compounds in water supplies and the potential for these chemicals to reach drinking water. Public perception frequently attributes this feminization to oral contraceptives (OCs) in wastewater and raises concerns that exposure to OCs in drinking water may contribute to the recent rise in human reproductive problems. Studies have suggested that long-term exposure to low levels of estrogens in water may adversely affect human health. This new information eases concerns that contraceptives are a major factor contributing to feminized fish and frogs. This study, âAre Oral Contraceptives a Significant Contributor to the Estrogenicity of Drinking Water?â reviews the literature regarding various sources of estrogens, in surface, source and drinking water, to determine whether OCs were the source of estrogen in surface waters, with an emphasis on the active molecule that comes from OCs. The authors find that industrial and agricultural sources not only discharge estrogens, but […]
Posted in Agriculture, Endocrine Disruption, Water | 1 Comment »
Tuesday, November 30th, 2010
(Beyond Pesticides, November 30, 2010) Young people who are overexposed to antibacterial soaps containing triclosan may suffer more allergies, and exposure to higher levels of Bisphenol A among adults may negatively influence the immune system, a new University of Michigan School of Public Health study finds. Triclosan is a chemical compound widely used in products such as antibacterial soaps, toothpaste, pens, diaper bags and medical devices. Bisphenol A (BPA) is found in many plastics and, for example, as a protective lining in food cans. Both of these chemicals are in a class of environmental toxicants called endocrine-disrupting compounds (EDCs), which are believed to negatively impact human health by mimicking or affecting hormones. Using data from the 2003-2006 National Health and Nutrition Examination Survey (NHANES), U-M researchers compared urinary BPA and triclosan with cytomegalovirus (CMV) antibody levels and diagnosis of allergies or hay fever in a sample of U.S. adults and children over age 6. Allergy and hay fever diagnosis and CMV antibodies were used as two separate markers of immune alterations. The study, âThe Impact of Bisphenol A and Triclosan on Immune Parameters in the US Population, NHANES 2003-2006,â was published online November 30, 2010 in the journal Environmental Health […]
Posted in Antibacterial, Chemicals, Triclosan | No Comments »
Friday, November 19th, 2010
(Beyond Pesticides, November 19, 2010) House Rules Committee Chairwoman Louise M. Slaughter and two colleagues asked the U.S. Food and Drug Administration (FDA) to ban triclosan due to the hazards that this chemical poses, including antibiotic resistance and potentially leading to higher health care costs, citing both Beyond Pesticides and Food and Water Watch along with other environmental groups. Rep. Slaughter, joined by Reps. Raul Grijalva and Betty McCollum, delivered the letter Tuesday, November 16, urging FDA to take immediate steps to stop the unnecessary exposure to this chemical in the U.S. Rep. Slaughter concludes that âtriclosan is clearly a threat to our health.â Among the reasons for her conclusion, she lists: ⢠The presence of triclosan in the human body and its impact on our âbody burden;â ⢠Bacterial resistance to antibiotic medications and antibacterial cleaners; ⢠The potential for endocrine disruption as a result of triclosan bioaccumulation in the body; ⢠Wastewater contamination; ⢠The threat of destroying ecological balance, and; ⢠The fact that triclosan is no more effective than soap and water. The scientific literature has extensivelly linked the non-medical uses of triclosan to many health and environmental hazards. Triclosan is an endocrine disruptor and has […]
Posted in Antibacterial, National Politics, Triclosan | No Comments »
Monday, November 15th, 2010
(Beyond Pesticides, November 15, 2010) A new study suggests the widespread use of the antimicrobial triclosan may be inhibiting the aquatic bacteria and algae needed for a healthy ecosystem. Triclosan is an antibacterial compound found in a wide variety of household products including soaps, cosmetics, toothpaste, flooring, textiles, and even childrenâs toys. According to the study entitled âTriclosan persistence through wastewater treatment plants and its potential toxic effects on river biofilms,â when triclosan finds its way into rivers and streams it can inhibit photosynthesis in algae and kill bacteria. The study examined a group of algae known as diatoms. Through photosynthesis, diatoms produce food as well as oxygen needed for other organisms. Diatoms produce an estimated 80 percent of the oxygen in our atmosphere making them essential to life on earth. When introduced to the market in 1972, triclosan was confined to hospital and health care settings. Aided by the false public perception that antibacterial products are best to protect and safeguard against potential harmful bacteria, triclosan has since exploded in the marketplace in hundreds of consumer products ranging from antibacterial soaps, deodorants, toothpastes, cosmetics, fabrics, toys, and other household and personal care products. Due to the prevalence of this […]
Posted in Antibacterial, Triclosan, Water | 1 Comment »
Wednesday, November 10th, 2010
(Beyond Pesticides, November 10, 2010) A University of Florida, Gainesville study reports that the antibacterial pesticide triclosan, found in toothpaste, soaps, toys and clothing, interferes with estrogen metabolism in women and can disrupt a vital enzyme during pregnancy. These recent findings raise concerns about triclosanâs possible effects on fetal growth and development. This study is just one of an emerging body of science which supports triclosan as an endocrine disruptor and should be eliminated from consumer products. The study, which was published in the November print issue of the journal Environment International, examines the effect of triclosan on a placental enzyme, called estrogen sulfotransferase. Triclosan is known to inhibit sulfonation of phenolic xenobiotics and is structurally related to other known inhibitors of estrogen sulfotransferase, such as polychlorobiphenylols (PCBs). During pregnancy, the placenta is an important source of estrogen, which is needed for normal fetal development and successful parturition (childbirth), and estrogen sulfotransferase is thought to play an important role in regulation of estrogen availability. Estrogen is a key hormone during pregnancy and controls the way a baby develops many key organs like the brain. Triclosan was found to be a very potent inhibitor of both estradiol and estrone sulfonation. The […]
Posted in Antibacterial, Triclosan | 1 Comment »
Wednesday, September 29th, 2010
(Beyond Pesticides, September 29, 2010) A class action complaint claims Dial Corp. defrauds consumers about its Dial Complete soap by falsely claiming that it ‘kills 99.99% of germs,’ when in fact the product provides no benefit over washing with regular soap and water. The suit states that Dial Corp.âs claims are deceptive and misleading, designed solely to cause consumers to buy the product. Dial Complete contains triclosan, a registered pesticide, which is linked to numerous adverse effects including hormone disruption and water contamination. The suit wants Dial Corp. enjoined from continuing its deceptive advertising, disgorgement and damages for consumer fraud and deceptive business practices. The plaintiff, David Walls, in his suit states there are no reliable studies that show Dial Complete lives up to these claims. His complaint states: “Through its extensive and comprehensive nationwide marketing campaign, defendant claims that Dial Complete ‘kills 99.99% of germs’, is the ‘#1 Doctor Recommended’ brand of antibacterial liquid hand wash and ‘kills more germs than any other liquid hand soap’, when in actuality, it does not, a fact which Dial knew and purposely misrepresented and failed to disclose to consumers. To this day, Dial has taken no meaningful steps to clear up consumer […]
Posted in Antibacterial, Label Claims, Litigation, Triclosan | No Comments »
Friday, September 24th, 2010
(Beyond Pesticides, September 24, 2010) Researchers from Virginia Tech discovered, for the first time, a way to detect nanosilver particles in the environment, finding that the particles leaching from consumer products can transform into silver sulfide in sewer sludge. Despite their widespread use, scientists still know very little about how nanomaterials move from consumer manufactured products into the environment and what impact they might have. These findings provide new information about the life cycle of silver nanoparticles, which are used in a number of consumer products as antimicrobial agents, including cosmetics, sunscreens, sporting goods, clothing, electronics, baby and infant products, food, and food packaging. Previous studies have shown that the particles, which are between one and 100 nanometers in size and smaller than many viruses, can enter the environment through wastewater, where they can accumulate in biosolids at wastewater treatment plants. These biosolids, also known as sewage sludge, are often sold to consumers as fertilizer, despite the fact that they can contain toxic contaminants, including another antibacterial, triclosan, which was recently found to persist in the environment. Nanosized particles can be released from impregnated materials via washing or or as a result of sweating, posing unknown adverse effects to humans […]
Posted in Antibacterial, Nanotechnology | No Comments »
Thursday, September 23rd, 2010
(Beyond Pesticides, September 23, 2010) A study by U.S. Department of Agriculture (USDA) scientists and cooperators provides new details about how fertilizing soils with biosolids also introduces triclosan, an antibacterial agent in soaps and other cleaning supplies, into the environment. Results show that triclosan in biosolids is only slowly degraded and persists at low levels in the environment for long periods of time. Biosolids are illegal for use in organic agriculture. For this study, entitled âFate of triclosan in agricultural soils after biosolid applicationsâ and published in Chemosphere, Agricultural Research Service (ARS), chemist Clifford Rice, of the ARS Environmental Management and Byproduct Utilization Laboratory in Beltsville, Md., and his partners determined that triclosan levels in Class B biosolids from a Mid-Atlantic wastewater treatment plant averaged around 15.5 milligrams per kilogram. They collected surface soil samples from 26 farms in northern Virginia, mostly from pastures. Some fields had never been amended with biosolids and others had been amended with one to four applications of biosolids within the previous 9 months to 13 years. Most of the biosolid amendments came from the wastewater treatment plant in the study. Generally, conventional chemical-intensive farmers add “Class B” biosolids, also known as treated wastewater solids, […]
Posted in Antibacterial, Triclosan | 1 Comment »
Friday, August 13th, 2010
(Beyond Pesticides, August 13, 2010) A new study finds that silver nanoparticles, which are used in consumer products and in hospitals for their antimicrobial properties, can harm plant life when it enters into the natural environment. Where silver nanoparticles are present in the soil, plant species are reduced by 22 percent, with an additional 20 percent reduction of microbial biomass, as compared to those plants without the presence of nanoparticles. Researchers applied biosolids with silver nanoparticles into the soil of plants growing in intermediate sized rubber tubs, using a concentration within the range that the U.S. Environmental Protection Agency (EPA) has reported finding in biosolids from a recent survey. “There have been a lot of lab studies looking at silver nanoparticles showing that they are highly toxic to bacteria, fungi, other microorganisms,” explained Ben Colman, PhD to Scientific American. Dr. Coleman is a postdoctoral researcher at Duke University who led the study. “Most of these studies have been conducted in very simple lab settings, [with] one species of bacteriaââoften the “lab rat” of the bacteria world, E [scherichia]. coli ââ[in] a test tube with very simple media and nanoparticles. So we wanted to move beyond this because it’s really hard […]
Posted in Antibacterial, Nanotechnology | 2 Comments »
Wednesday, August 11th, 2010
(Beyond Pesticides, August 11, 2010) Independent tests of sewage sludge-derived compost from the Synagro CVC plant -distributed free to gardeners since 2007 by the San Francisco Public Utilities Commission (PUC) in their “organic biosolids compost” giveaway program — have found appreciable concentrations of contaminants with endocrine-disruptive properties. These contaminants include polybrominated diphenyl ether (PBDE) flame retardants, nonylphenol detergent breakdown products, and the antibacterial agent triclosan. The independent tests were conducted for the Food Rights Network by Robert C. Hale, PhD of the Virginia Institute of Marine Sciences. The antibacterial triclosan, an endocrine disruptor, was also found in the sewage sludge compost, at an average of 1,312 ng/g (or ppb). Last week, the Centers for Disease Control updated their National Report on Human Exposure to Environmental Chemicals and noted that triclosan levels in people increased by over 41% between just the years 2004 and 2006. Also last week, a scientific paper showed that triclosan from sewage sludge can be taken up by soybean plants and translocated into the beans themselves, then consumed by people and animals. PBDEs are persistent and bioaccumulate in the environment and elevated levels have been found in California citizens. The average total of the PBDE congeners tested […]
Posted in California, Triclosan | 2 Comments »