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Guidance to Identify, Quantify, And Reduce Laboratory Subsampling Errors in Soils and Solid Wastes

By Nocerino, John M.

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Book Id: WPLBN0000103760
Format Type: PDF eBook
File Size: 0.1 MB
Reproduction Date: 2007
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Title: Guidance to Identify, Quantify, And Reduce Laboratory Subsampling Errors in Soils and Solid Wastes  
Author: Nocerino, John M.
Volume:
Language: English
Subject: Ecology, Natural resource issues, Environemtal protection
Collections: Environmental Awareness Library Collection
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Publisher: United States Environmental Protection Agency

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Nocerino, J. M. (n.d.). Guidance to Identify, Quantify, And Reduce Laboratory Subsampling Errors in Soils and Solid Wastes. Retrieved from http://www.worldebooklibrary.net/


Description
Excerpt: Scientific Problem and Policy Issues Nearly all environmental research programs require the collection of samples in the field. However, the overwhelming majority of efforts (in terms of time and cost) to control and quantify error components in the data are concentrated on laboratory analyses. It has been repeatedly stated that 80% of the total error occurs in the field for the more stable contaminants (e.g., metals, PCBs, and pesticides) and up to 99.99% of the total error occurs in the field for non-stable contaminants (e.g., volatile organic compounds; (VOCs)). This research effort is aimed at examining and reducing the biases (intentional or unintentional error) that occur due to the use of “improper” sampling techniques when collecting the analytical subsample. An improperly collected analytical subsample will, in turn, yield contaminant concentrations that are not representative of the site and can lead to improper decisions being made by regulators on whether or not to remediate a site.

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