Calibration of the Chemcatcher passive sampler for the monitoring of priority organic pollutants in water
Research output: Contribution to journal › Article
An integrative passive sampler consisting of a C18 Empore® disk receiving phase saturated with n-octanol and fitted with low-density polyethylene diffusion membrane was calibrated for the measurement of time-weighted average concentrations of hydrophobic micropollutants, including polyaromatic hydrocarbons and organochlorine pesticides, in water. The effect of temperature and water turbulence on kinetic and thermodynamic parameters characterising the exchange of analytes between the sampler and water was studied in a flow-through system under controlled conditions. It was found that the absorption of test analytes from water to the sampler is related to their desorption to water. This allows for the in situ calibration of the uptake of pollutants using offload kinetics of performance reference compounds. The sampling kinetics are dependent on temperature, and for most of the tested analytes also on the flow velocity. Sampler–water partition coefficients did not significantly change with temperature.
|Number of pages||11|
|Publication status||Published - 2006|
REF2014 Impact Case Study: The Chemcatcher - an approved passive sampler for monitoring water quality
Impact: Public Policy Impacts, Health & Welfare Impacts, Environmental Impacts