EDF Health

Selected tag(s): Consumer products

Sludging through the nano lifecycle: Caution ahead

By / Published: September 23, 2010

Richard Denison, Ph.D., is a Senior Scientist.

Researchers at Virginia Tech have identified and characterized silver nanoparticles (AgNPs) in the sewage sludge produced by an operating municipal wastewater treatment plant.  The study is notable in several respects:  It is the first time AgNPs have been detected in a field-scale study, one of a real-world operation representative of a real-world exposure scenario to boot.  It shows that silver can exist in wastewater treatment products as nanoparticles.  It indicates such particles may be most likely to partition to sludge under common treatment technologies.  And it suggests that silver may be chemically transformed in the course of wastewater treatment.

The study did not demonstrate that the AgNPs detected in the sludge originated from products containing such nanoparticles, as some news stories have suggested, although the authors indicate such a source “is likely.”  But the findings have important implications for nano safety nonetheless.  Read More »

Posted in Nanotechnology / Also tagged , | Read 2 Responses

A minimum data set: Who needs it?

By / Published: April 18, 2010

Richard Denison, Ph.D., is a Senior Scientist.

Sound chemicals management and control demands sound information.  The Safer Chemicals Healthy Families coalition believes information sufficient to determine a chemical’s safety needs to be provided for all chemicals, as a condition for them to enter (for new chemicals) or remain (for existing chemicals) on the market.

Needed chemical information is not limited to test data, and even for types of data that can be derived from testing, alternative sources and approaches may be appropriately used.  Given the large number of chemicals for which information is needed, the availability of various sources of information, and the desirability of minimizing cost and use of laboratory animals, all reasonable efforts should be made to use existing information and data derived from the use of validated alternative methods – as long as the information they provide is current and scientifically reliable.

But who needs such information? Read More »

Posted in Health policy, Regulation, TSCA reform / Also tagged , , , , | Comments are closed

Are we ready to get sensible about triclosan use?

By / Published: April 9, 2010

Cal Baier-Anderson, Ph.D., is a Health Scientist.

Yesterday the Washington Post reported that the Food and Drug Administration (FDA) is acknowledging that new research raises “valid concerns” about the possible health effects of triclosan, an antimicrobial chemical that can be found in dozens of consumer products as diverse as soaps, personal care products, cutting boards, plastic sandals and even bath towels.

Originally developed as a surgical scrub for use by doctors and nurses, the burgeoning uses of this pesticidal chemical have hugely expanded human and environmental exposures.  With little evidence of any actual public health benefits from such uses, FDA along with the Environmental Protection Agency (EPA) and the Consumer Product Safety Commission (CPSC) should move quickly to limit triclosan use.  Only those uses that have a demonstrable public health benefit, when weighed against potential health and environmental risks, should be allowed. Read More »

Posted in Emerging science, Health science / Also tagged , , , | Read 3 Responses

Blown away: EDF investigation of asbestos in hair dryers

By / Published: April 1, 2010

Richard Denison, Ph.D., is a Senior Scientist.

On March 30, the Washington Post ran the following story:
[Clarification added 4/2/10:  I have now learned that the text below is actually a summary of two Post articles, which ran in Environment magazine (April 1979, p. 21).  Click these links for previews of the 3/29/79 and 3/30/79 Post articles, available for purchase from its archives.  Apologies for the incorrect information.]

Reporters from WRC-TV, the NBC Station in Washington, D. C., spent nine months investigating asbestos-lined hair dryers after the Consumer Product Safety Commission declined to do so.  The station, in collaboration with the Environmental Defense Fund, conducted an investigation which culminated in an uninterrupted 15-minute news segment detailing the results of their findings.  Read More »

Posted in Health science, Regulation, TSCA reform / Also tagged | Read 3 Responses

Industry to EPA, Congress: Restrain me before I falsely claim CBI again!

By / Published: March 2, 2010

Richard Denison, Ph.D., is a Senior Scientist.

Sara Goodman of Greenwire/E&E News had a great piece picked up by the New York Times yesterday about state governments pressing for meaningful TSCA reform.  I blogged earlier about the states’ reform principles, quoting Ted Sturdevant, Director of the Washington State Department of Ecology, urging that “[w]e need a federal law that prevents contamination from happening in the first place, and phases out the harmful chemicals that are already in widespread use.”

Goodman’s piece yesterday focused more on the need for fundamental reform of confidential business information (CBI) claim allowances under TSCA.  Recall that, under TSCA, state governments as well as the public are denied access to any CBI EPA receives.  Judging by their quotes in Goodman’s piece, they’re not happy about it:  Read More »

Posted in Health policy, Regulation / Also tagged | Comments are closed

Toxic Chemicals in Consumer Products: More than Just Consumer Exposure

By / Published: February 8, 2010

Cal Baier-Anderson, Ph.D., is a Health Scientist.

An article recently published in the journal Macromolecules reports on the development of a new process that the authors claim can prevent the migration of phthalates from PVC plastic.   This “breakthrough” will undoubtedly be used to argue that industry should be allowed to continue to use a retinue of toxic chemicals in the manufacture of PVC destined for use in a broad variety of applications.

Concern for consumer exposures is often the main argument made against the use of toxic chemicals in consumer applications.  With evidence of exposure to chemicals like phthalates in nearly everyone who has been tested, including pregnant women, this is understandable.

But even if the new claims are proven to be true, there are many other reasons we need to find safer substitutes for such chemicals: worker exposures, environmental releases and end-of-life recycling and disposal issues, to name a few.  The potential impacts from continued use of toxic chemicals must be examined across their entire lifecycle. Read More »

Posted in Emerging science, Health science / Also tagged , , | Read 2 Responses