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It has been shown that Environmental Protection Agency (EPA) Method 3060A does not adequately extract Cr(VI) from solids containing chromium ore processing residue (COPR). We systematically modified parameters of EPA 3060A towards improving extraction efficiency of Cr(VI) from the National Institute of Standards and Technology (NIST) standard reference material (SRM) 2701, a standard COPR-contaminated soil from New Jersey, USA. A material similar to NIST 2701 prepared in the laboratory from contaminated soil referred to as 2B was also analyzed. Extraction parameters tested were particle size, glass or polytetrafluoroethylene (PTFE) extraction vessels, volume of extraction solution to mass of sample, and extraction...
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This Story Map Journal discusses broad-scale data available for various natural resource topics. Links to download broad-scale data are provided in the discussion text. The interactive web maps depict examples of broad-scale data made publicly available and served by the various organizational owners of the data.
Types: Map Service; Tags: Aerial, Air Quality, BISON, BLM, Biodiversity Information Serving Our Nation, All tags...


    map background search result map search result map BLM NOC Sources of Broad-Scale Data by Topic Story Map BLM NOC Sources of Broad-Scale Data by Topic Story Map