Evaluation of performance reference compounds in polyethylene-based passive air samplers.
Polyethylene-based passive air samplers (PSDs) were loaded with performance reference compounds (PRCs) and deployed in a wind tunnel to examine the effects of wind speed on sampler performance. PRCs could be loaded reproducibly into PSDs, with coefficients of variation only exceeding 20% for the more volatile compounds. When PSDs were exposed to low (0.5-1.5 m s-1) and high (3.5-4.5 m s-1) wind speeds, PRC loss rate constants generally increased with increasing wind speed and decreased with increasing sampler/air partition coefficients. PSD-based air concentrations calculated using PRC loss rate constants and sampler/air partition coefficients and air concentrations measured using active samplers compared closely. PRCs can be used to account for the effect of differences in wind speeds on sampler performance and measure air concentrations with reasonable accuracy.
Bartkow
Michael E
ME
National Research Centre for Environmental Toxicology (ENTOX), University of Queensland, Coopers Plains, Queensland 4108, Australia. m.bartkow@uq.edu.au
Jones
Kevin C
KC
Kennedy
Karen E
KE
Holling
Neil
N
Hawker
Darryl W
DW
Müller
Jochen F
JF
D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D007202:Indicators and Reagents; D008962:Models, Theoretical; D010573:Pesticide Residues / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D020959:Polyethylene; D015203:Reproducibility of Results; D014919:Wind
D000393:Air Pollutants; D007202:Indicators and Reagents; D010573:Pesticide Residues; D011084:Polycyclic Aromatic Hydrocarbons; D020959:Polyethylene; D011078:Polychlorinated Biphenyls