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Title: Replacement of charcoal sorbent in the VOST

Technical Report ·
OSTI ID:5921011

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.

Research Organization:
Radian Corp., Research Triangle Park, NC (United States)
OSTI ID:
5921011
Report Number(s):
PB-93-221893/XAB; CNN: EPA-68-D1-0010
Resource Relation:
Other Information: See also PB--84-234525
Country of Publication:
United States
Language:
English