||EPA method study 30, method 625 : base/neutrals, acids and pesticides /
||Radian Corp., Austin, TX.;Environmental Monitoring and Support Lab., Cincinnati, OH.
|| U.S. Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory,
Water--Pollution--United States--Measurement. ;
Water quality management--United States. ;
Chemical analysis ;
Water analysis ;
Gas chromatography ;
Mass spectroscopy ;
Water pollution ;
Saponification number ;
EPA method 625 ;
Water pollution detection ;
Computer aided analysis
||Region 1 Library/Boston,MA
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The work which is described in this report was performed for the purpose of validating, through an interlaboratory study, Method 625 for the analysis of the base/neutral, acid, and pesticide priority pollutants. This method is based on the extraction and concentration of the various analytes followed by their determination through gas chromatography using a low resolution mass spectrometer as the measuring device. Participating laboratories were selected based upon technical evaluation of proposals and upon the analyses results of prestudy samples. The laboratories were supplied with ampuls containing various concentrations of the pollutant compounds. These solutions were aliquoted into four different water types which were subsequently analyzed according to the appropriate method. In addition to the sample concentrates, each laboratory was supplied with an industrial effluent which was used to help determine false positive and false negative data. The data obtained from the interlaboratory study were analyzed employing a series of computer programs known as the Interlaboratory Method Validation Study (IMVS) system which was designed to implement ASTM procedure D2777.
Cover title. "Jun 84." Photocopy.