EPA decision to revise selenium standard stirs debate

Article Abstract:

The Environmental Protection Agency (EPA) is considering halving the current 5 parts per billion selenium pollution standard after a review of selenium research showed the current standard produced reproductive impairment in wildlife. Members of the mining and other industries are arguing that more stringent selenium standards would become a terrible economic burden on them and that the research did not take into account site-specific selenium discharges. The EPA's plan to revise selenium pollution standards include a plan to use selenium concentration in sediments and in tissues to provide a better measure of selenium pollution control.

Administration of Air and Water Resource and Solid Waste Management Programs, Water Pollution Control, Standards, Pollution, United States. Environmental Protection Agency, Water pollution, Selenium, Selenium (Chemical element)

---

Toxicity of aquatic mixtures yielding to new theoretical approach

Article Abstract:

New theoretical approaches in determining the toxicity of complex chemical mixtures in the aquatic environment are being developed in the US and the Netherlands. The tests are based on new research on the classification of chemical compounds by their 'mode' of toxic action and a new analytical method that estimates total bioconcentration. They are seen to yield more information than existing empirical methods that predict toxicity by placing living organisms directly into effluent.

Research, Measurement, Chemicals, Toxicological chemistry, Toxicology

---

Life-cycle analysis stirs continued debate on impact of electric cars

Article Abstract:

A life cycle analysis of 'zero emissions' or electric vehicles conducted by economists and engineers at Carnegie Mellon University revealed that these cars are as damaging to the environment as fuel-powered vehicles. Researchers warned of a drastic increase in total lead discharges to the environment due to their large lead-acid batteries. The study has generated debate on on the utility of life-cycle analysis in assessing environmental impacts of products.

All Other Transportation Equipment Manufacturing, Transportation equipment, not elsewhere classified, Electric Vehicles NEC, Analysis, Environmental aspects, Electric vehicles, Product life cycle

Similar abstracts:

• Abstracts: Patent award stirs controversy. Discovery of AT gene sparks biomedical research bonanza. Annual genetics meeting: some puzzles, some answers
• Abstracts: Agencies scramble to measure public impact of research. Korea plans new tokamak machine. China's unique environment favors large intervention trials
• Abstracts: EPA technology verification program hits its stride. Toxics Release Inventory expanded to cover seven new industries
• Abstracts: Effect of bromide ion on haloacetic acid speciation resulting from chlorination and chloramination of aquatic humic substances
• Abstracts: DOE environmental management program awards first basic research grants. Chiral compounds show promise as environmental tracers

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.