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MEASUREMENT OF CONTAMINATION IN ENVIRONMENTAL SAMPLES
Citation:
Simes, G. AND J. Harrington. MEASUREMENT OF CONTAMINATION IN ENVIRONMENTAL SAMPLES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-93/442 (NTIS PB94113727).
Description:
Contamination of environmental samples and measurement system can be monitored through the systematic use of appropriate quality control (QC) blanks. uring the last decade, a proliferation of terms for these QC samples has taken place, making the specification of appropriate blanks and the interpretation of their data a matter of some confusion. ncomplete understanding of the various types of QC blanks, their points of introduction into a sampling and analysis program, and the kinds of information their results provide can: 1) lead to incorrect preparation and use of QC blanks; 2) 1 @ t data c ability; and 3) hinder the technical quality review process for scientific reports. n examination of the frequently used terms for, and functions performed by, different QC blanks is presented to provide the environmental community with a means of combatting the inconsistent use and interpretation of QC blanks.