PMID- 11757613
OWN - NLM
STAT- MEDLINE
DCOM- 20020430
LR  - 20191210
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 35
IP  - 22
DP  - 2001 Nov 15
TI  - Further developments in the use of semipermeable membrane devices as passive air 
      samplers: application to PCBs.
PG  - 4536-43
AB  - There are several incentives for developing passive air sampling techniques for 
      persistent organic pollutants (POPs). This paper reports on studies to further 
      calibrate and optimize semipermeable membrane devices (SPMDs) for use as 
      "integrated" air samplers of gas-phase POPs. These samplers are deployed over 
      weeks/months/years. Polychlorinated biphenyls (PCBs) were used as the test 
      compounds in this study, with three specific objectives: (i) to determine whether 
      ambient wind speed limits the rate of uptake during typical deployment 
      conditions; (ii) to monitor uptake and SPMD-air equilibrium for a range of 
      compounds; and (iii) to assess the application of performance reference compounds 
      (PRCs) in air sampling, to "correct" for site-specific differences in uptake 
      rates. When deployed in Stevensons screens under ambient conditions, wind speed 
      did not significantly affect uptake rates. Rather, differences in summer/winter 
      uptake rates reported previously, using the same deployment devices as here, are 
      due to temperature affecting compound permeability through the membrane. Results 
      from the use of PRCs indicate that SPMDs should be spiked prior to exposure with 
      a range of compounds that are not present in the atmosphere, so that uptake rates 
      can be estimated from depuration rates during a particular deployment. Short-term 
      deployments (e.g. days; few weeks) would need to use compound(s) with a low 
      octanol:air partition coefficient (K(OA)) (e.g. 13C12 labeled PCB-28); long-term 
      deployments (of many months to years) would need to use intermediate K(OA) 
      compounds (e.g. 13C12 PCB-101; 13C12 PCB-153).
FAU - Ockenden, W A
AU  - Ockenden WA
AD  - Environmental Science Department, Lancaster University, UK.
FAU - Corrigan, B P
AU  - Corrigan BP
FAU - Howsam, M
AU  - Howsam M
FAU - Jones, K C
AU  - Jones KC
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Environmental Pollutants)
RN  - 0 (Membranes, Artificial)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Calibration
MH  - Environmental Monitoring/*methods
MH  - Environmental Pollutants/*analysis
MH  - *Membranes, Artificial
MH  - Permeability
MH  - Polychlorinated Biphenyls/*analysis
MH  - Sensitivity and Specificity
MH  - Time Factors
MH  - Wind
EDAT- 2002/01/05 10:00
MHDA- 2002/05/01 10:01
CRDT- 2002/01/05 10:00
PHST- 2002/01/05 10:00 [pubmed]
PHST- 2002/05/01 10:01 [medline]
PHST- 2002/01/05 10:00 [entrez]
AID - 10.1021/es0101126 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2001 Nov 15;35(22):4536-43. doi: 10.1021/es0101126.