Effect of housing geometry on the performance of Chemcatcher™ passive sampler for the monitoring of hydrophobic organic pollutants in water

Passive sampling of pollutants in water has been gaining acceptance for environmental monitoring. Previously, an integrative passive sampler (the Chemcatcher™) was developed and calibrated for the measurement of time weighted average concentrations of hydrophobic pollutants in water. Effects of phys...

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Bibliographic Details
Published in:Environmental pollution (1987) 2008-06, Vol.153 (3), p.706-710
Main Authors: Lobpreis, Tomáš, Vrana, Branislav, Dominiak, Ewa, Dercová, Katarína, Mills, Graham A., Greenwood, Richard
Format: Article
Language:English
Subjects:
Calibration
Chemcatcher
Chemcatcher sampler
Environmental Monitoring - instrumentation
Environmental Monitoring - methods
Equipment Design
Fluorenes - analysis
hydrochemistry
Hydrophobic and Hydrophilic Interactions
Hydrophobic organic pollutants
hydrophobicity
kinetics
organic compounds
organic pollutants
passive samplers
Passive sampling
Phenanthrenes - analysis
pollutants
Polycyclic aromatic hydrocarbons
Polycyclic Aromatic Hydrocarbons - analysis
reference standards
samplers
shape
turbulent flow
water flow
Water monitoring
Water Pollutants, Chemical - analysis
water pollution
water temperature
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Summary:Passive sampling of pollutants in water has been gaining acceptance for environmental monitoring. Previously, an integrative passive sampler (the Chemcatcher™) was developed and calibrated for the measurement of time weighted average concentrations of hydrophobic pollutants in water. Effects of physicochemical properties and environmental variables (water temperature and turbulence) on kinetic and thermodynamic parameters characterising the exchange of analytes between the sampler and water have been published. In this study, the effect of modification in sampler housing geometry on these calibration parameters was studied. The results obtained for polycyclic aromatic hydrocarbons show that reducing the depth of the cavity in the sampler body geometry increased the exchange kinetics by approximately twofold, whilst having no effect on the correlation between the uptake and offload kinetics of analytes. The use of performance reference compounds thus avoids the need for extensive re-calibration when the sampler body geometry is modified. The effect of passive sampler geometry on accumulation kinetics of organic pollutants from water was evaluated.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2007.09.011