Improved Purge-Trap/GC Analysis of Volatiles in Drinking Water by US EPA Method 524.2

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Courtesy of Sigma-Aldrich Co., LLC

The VOCARB 3000 adsorbent trap is suitable for monitoring volatile organic compounds in drinking water samples, as well as in wastewater and hazardous waste samples.  This adsorbent trap meets the requirements of US EPA Methods 502 and 524.2.  Relative standard deviation values were less than 15% for all of the compounds listed, and less than 7% for most of the compounds.  Recovery of each compound listed was greater than 80%.  For certain problem compounds - vinyl chloride, 1,1,1-trichloroethane, and carbon tetrachloride - the VOCARB 3000 trap offered significantly better performance compared to the Tenax/silica gel/charcoal trap recommended by Method 524.

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