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On-Site Mercury Analysis of Soil at Hazardous Waste Sites By Immunoassay and Asv

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Abstract: Two field methods for Hg, immunoassay and anodic stripping voltammetry (ASV), that can provide onsite results for quick decisions at hazardous waste sites were evaluated. Each method was applied to samples from two Superfund sites that contain high levels of Hg; Sulphur Bank Mercury Mine site, Clear Lake, California, and Carson River Mercury site, Nevada. Two laboratory methods were used for comparison purposes; cold vapor atomic fluorescence spectrometry (CVAFS) and inductively coupled plasma-mass spectrometry (ICP-MS). The immunoassay was found to be accurate for high and low Hg concentrations compared to the 5 and 15 ug/g soil sample standards provided with it. Despite poor agreement between immunoassay and confirmatory analysis results at concentrations near the comparison standards, the immunoassay could be used as an effective screening method provided care is taken in identifying an operational screening level. The ASV method had an analytical range of 1-50 ug/g, with a CV of 15%. ASV results were comparable to CVAFS (CV=15%) and more precise than ICP-MS (CV=20%). The lower limit of quantitative results was 3 ug/g for field samples, and is attributed to uncertainty associated with sampling.

The US Environmental Protection Agency (EPA) through its Office of Research and Development (ORD), funded and collaborated in the research described here. It has been subjected to the Agency's peer review system and has been approved as an EPA publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
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Citation:Gerlach, R. W., M. S. Gustin, and J. M. Van Emon. On-Site Mercury Analysis of Soil at Hazardous Waste Sites By Immunoassay and Asv. APPLIED GEOCHEMISTRY 16(3):281-290, (2001).
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Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
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Division: Human Exposure & Atmospheric Sciences Division
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Branch: Human Expsoure Research Branch
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Product Type: Journal
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Published: 01/01/2001
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Related Entries:
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Bullet Item Field Analytical Methods: Advanced Field Monitoring Methods Development and Evaluation of New and Innovative Technologies That Support the Site Characterization and Monitoring Requirements of the Superfund Program.
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Last Updated on Monday, October 22, 2007
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