Passive Air Sampling of PCBs: Field Calculation of Atmospheric Sampling Rates by Triolein-Containing Semipermeable Membrane Devices
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- 作者：Wendy A. Ockenden ; Harry F. Prest ; Gareth O. Thomas ; Andy Sweetman ; and Kevin C. Jones
- 刊名：Environmental Science & Technology
- 出版年：1998
- 出版时间：May 15, 1998
- 年：1998
- 卷：32
- 期：10
- 页码：1538 - 1543
- 全文大小：75K
- 年卷期：v.32,no.10(May 15, 1998)
- ISSN：1520-5851
文摘
Triolein-containing standard U.S. Geological Survey (USGS)designed semipermeable membrane devices (SPMDs)were deployed in the field alongside conventional activeair sampling equipment for durations of up to 3 months.A high degree of reproducibility between duplicatesamplesand linear uptake of polychlorinated biphenyls (PCBs)by the USGS SPMDs were observed. USGS SPMD airsampling rates were calculated for a range of PCBs.Sampling rates were found to be higher in winter thaninsummer and in general increased with increasingchlorination and decreased with increasingortho-substitution.The sampling rate for the sum of the ICES congeners(IUPAC congeners 28, 52, 101, 118, 138, 153, and 180) wasfound to be 1.9 m3 day-1SPMD-1 in summer (meantemperature 18 
f">C) and 7.6 m3day-1 SPMD-1 inwinter (meantemperature 4 f">C). In a separate study USGS SPMDswere deployed for 2 months, and sequestered concentrationsand the aforementioned sampling rates were used tocalculate atmospheric concentrations. Excellentagreementwas found between air concentrations calculated fromthe SPMDs and active samplers. The immense potentialofthese lipid-containing USGS SPMDs for time-integratedpassive atmospheric monitoring of gas-phase persistentorganic pollutants (POPs), for example, in remote areasor for spatial mapping near potential sources, isconfirmed.
f">C) and 7.6 m3day-1 SPMD-1 inwinter (meantemperature 4 f">C). In a separate study USGS SPMDswere deployed for 2 months, and sequestered concentrationsand the aforementioned sampling rates were used tocalculate atmospheric concentrations. Excellentagreementwas found between air concentrations calculated fromthe SPMDs and active samplers. The immense potentialofthese lipid-containing USGS SPMDs for time-integratedpassive atmospheric monitoring of gas-phase persistentorganic pollutants (POPs), for example, in remote areasor for spatial mapping near potential sources, isconfirmed.