Record Display for the EPA National Library Catalog


Main Title EPA (Environmental Protection Agency) Method Study 29, Method 624--Purgeables.
CORP Author Radian Corp., Austin, TX.;Environmental Monitoring and Support Lab.-Cincinnati, OH.
Year Published 1984
Report Number EPA-68-03-3102; EPA-600/4-84-054;
Stock Number PB84-209915
Additional Subjects Water analysis ; Water quality ; Water pollution ; Air pollution ; Gas chromatography ; Quality control ; Statistical analysis ; Chlorine organic compounds ; Surface waters ; Potable water ; Sampling ; Air water interactions ; Laboratory equipment ; Purging ; Sediments ; Tables(Data) ; Concentration(Composition) ; Performance evaluation ; EPA method 624 ; Volatile organic compounds ; Purge devices
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB84-209915 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 246p
The work which is described in the report was performed for the purpose of validating, through an interlaboratory study, Method 624 for the analysis of the volatile organic priority pollutants. This method is based on purging and concentration of the various analytes on an adsorbent followed by thermal desorption onto a gas chromatographic column. A low resolution mass spectrometer serves 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 methods. In addition to the sample concentrates, each laboratory was supplied with an industrial effluent which was known to contain various pollutants and which was used to estimate 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.