New testing methods detect gaseous mercury species
Article Abstract:
The University of North Dakota's Energy & Environmental Research Center (EERC) has devised two methods designed to enhance EPA's Method 29 of identifying elemental and oxidized forms of gaseous mercury. Method 29 uses Two bottles of acidified hydrogen peroxide and two bottles of acidified potassium permanganate are used in Method 29 mercury detection. The new methods substitute either potassium chloride or tris (hydroxymethyl) aminomethane solution to replace some hydrogen peroxide. The improvements can help detect mercury in flue-gases emitted by coal-fired power plants.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Europe to toughen drinking-water standards
Article Abstract:
The European Union (EU) will implement a tougher precautionary standard to prevent the further contamination of drinking water by pesticides and other harmful chemicals. The new standard will replace the existing EU pesticide limit of 0.1 microgram per liter which was set in 1980. This development has forced the pesticide industry to lobby for health-base controls to replace the precautionary standard. However, some member nations of the EU argue that preventing pesticides from entering groundwater sources is better than investing in purification plants.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
EPA reviews New York City watershed management
Article Abstract:
The EPA will review New York City's policy of not running its drinking water through filtration plants. The city has so far circumvented the laws on filtering water by creating strict watershed rules and regulations, implementing a complex watershed protection program, and buying environmentally sensitive land.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Sensing 'skin' may detect bridge cracks. Louisiana cable-stayed bridge span to be North America's longest. Rochester replaces problematic Troup Howell Bridge
- Abstracts: Multiresidue method for determination of post-emergence herbicides in water by HPLC/ESI/MS in positive lonization mode
- Abstracts: Horizontal bubble train apparatus for heterogeneous chemistry studies: uptake of gas-phase formaldehyde. Detection and estimation of part-per-billion levels of formaldehyde using a portable high-throughput liquid absorption air sampler
- Abstracts: DOE lab predicts future envirotech breakthroughs. Drinking water proposal eases some health goals
- Abstracts: New product development success factors in American and British firms. Requirements capture as process of technology-market integration