Application of SPME as a passive air sampler for inhalation exposure assessment: a case study on 2-Chlorophenol

Halogeneated hydrocarbons are among the most important classes of toxic chemicals considering environmental and occupational health which can be quantified by several methods. This study examined the applicability of solid phase microextraction for sampling and quantifying of 2-Chlorophenol in the air. A dynamic standard atmosphere generation system was constructed and effects of sampling parameters such as fiber type، calibration mode and retraction length on sampler performance were studied. Actual sampling rate calculated according to side-by-side sampling was used for quantifications. The effects of environmental parameters including temperature، humidity، and air velocity، were studied. There was no significant difference among sampling rates at different temperatures and velocities (in dynamic conditions) but relative humidity had a significant negative effect on the sampling rate. Storage ability of the SPME samples were seriously depends on the time and temperature of storage. The SPME samples had a poor storage capacity in comparison with the charcoal samples. However، sample recovery increased with decreasing the storage temperature. CAR/PDMS SPME in retracted mode is a good alternative for sampling and analysis of this class of compounds in the air. Its sampling rate is stable in wide range of temperatures and velocities. Therefore، it can be used readily in environmental and occupational exposure assessments.