||Replacement of Charcoal Sorbent in the VOST.
Johnson, L. D. ;
Fuerst, R. G. ;
Foster, A. L. ;
Bursey, J. T. ;
||Radian Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Air pollution sampling ;
Chemical tests ;
Stationary sources ;
VOST(Volatile Organic Sampling Train) ;
Volatile organic compounds ;
EPA Method 0030
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||EPA Method 0030, the Volatile Organic Sampling Train (VOST), for sampling volatile organics from stationary sources, specifies the use of petroleum-base charcoal in the second sorbent tube. Charcoal has proven to be a marginal performer as a sampling sorbent, partly due to inconsistency in analyte recovery. In addition, commercial availability of petroleum charcoal for VOST tubes has been variable. Lack of data on comparability and variability of charcoals for VOST application has created uncertainty when other charcoals are substituted. Five potential sorbent replacements for charcoal in Method 0030 were evaluated along with a reference charcoal. Two of the sorbents tested, Ambersorb XE-340 and Tenax GR, did not perform well enough to qualify as replacements. Three candidates, Anasorb 747, Carbosieve S-III and Kureha Beaded Activated Charcoal, performed adequately, and produced statistically equivalent results. Anasorb 747 appears to be an acceptable replacement for petroleum charcoal, based on a combination of performance, availability, and cost.
||See also PB84-234525. Presented at the Annual International Incineration Conference (12th), Knoxville, TN., May 5, 1993. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
||Reprint: Replacement of Charcoal Sorbent in the VOST.
||PC A03/MF A01