January 12, 2011, WASHINGTON (Coal Geology)– Several weeks ago, EPA Administrator Lisa P. Jackson committed to address hexavalent chromium (also known as chromium-6) in drinking water by issuing guidance to all water systems on how to assess the prevalence of the contaminant. Today, the agency is delivering on that promise and has issued guidance recommending [...]
Geochemistry
Enhanced Monitoring of Hexavalent Chromium in Drinking Water: EPA Guideline
January 12th, 2011 | by Editor | published in Environment, Geochemistry | 1 Comment »
Lower IQ in Children could be caused by Fluoride in Water
December 27th, 2010 | by Editor | published in Geochemistry | 3 Comments »
NEW YORK, Dec. 27, 2010 (Coal Geology) — Exposure to fluoride may lower children’s intelligence says a study pre-published in Environmental Health Perspectives, a publication of the National Institute of Environmental Health Sciences (online December 17, 2010). Fluoride is added to 70% of U.S. public drinking water supplies. According to Paul Connett, Ph.D., director of [...]
Aluminum Geochemistry Eh-pH, pe-pH diagrams and Solubility
October 22nd, 2010 | by Editor | published in Geochemistry | Leave A Comment »
The Eh-pH diagram for Aluminum in Al-O-OH system is constructed using Al activity as 1E-10. The Aluminum species can dissolve in water in both high and low pH as Aluminum can form complex ions with hydroxide ion (ano with other anions such as SO4). Eh–pH diagram is any of a class of diagrams that designates [...]
Eh-pH diagram for SILVER (Ag): Geochemistry
October 22nd, 2010 | by Editor | published in Geochemistry | Leave A Comment »
October 22, 2010 (Coal Geology) Silver (Ag) occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a by-product of copper, gold, lead, and zinc refining. The Eh-pH diagram shows the two main phase of [...]
ABA (Acid Base Accounting) Determining Organic, Pyritic and Sulfate sulfur
October 19th, 2010 | by Ankan Basu | published in Geochemistry | Leave A Comment »
[ReviewAZON asin="B003YMN62U"]Role of oxygen transfer in acid mine drainage treatment[/ReviewAZON]
