Field validation of an active sampling cartridge as a passive sampler for long-term carbonyl monitoring.

摘要: A carbonyl sampler originally designed for the active sampling method (Sep-Pak XPoSure) was used long-term passive sampling, and its applicability as a examined through field experiments. The uptake rates of were determined experimentally from collocated samplings various periods. obtained formaldehyde, acetaldehyde, acetone 1.48, 1.23, 1.08 mL/min, respectively. These consistent wide range term (12 hr-2 weeks). Uptake each proportional to diffusion coefficients each. Therefore, ratios calculate carbonyls which not experimentally. Lower limits determination 2.16-17.5 microg/m3 2-week sampling. It confirmed that monitoring concentrations up 118-229 possible. Relative standard deviations generated repeatability test 2-12.3% error five samplings, recovery efficiencies larger than 90%. Thus, found be highly suitable compounds.