Laboratory performance study for passive sampling of nonpolar chemicals in water
Booij, K.; Smedes, F.; Crum, S. (2017). Laboratory performance study for passive sampling of nonpolar chemicals in water. Environ. Toxicol. Chem. 36(5): 1156-1161. https://dx.doi.org/10.1002/etc.3657 In: Environmental Toxicology and Chemistry. Setac Press: New York. ISSN 0730-7268; e-ISSN 1552-8618, more |   |
| Author keywords | Organic contaminants; Passive sampler; Analytical chemistry; Quality assurance; Interlaboratory study; Proficiency testing |
| Abstract | Two laboratory performance studies with 21 and 11 participants were carried out for passive sampling of nonpolar chemicals in water, using silicone samplers that were deployed for 7 wk and 13 wk at 2 river sites in the Netherlands. Target analytes were polychlorinated biphenyls, polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), hexachlorobutadiene, hexachlorobenzene, and a number of performance reference compounds (PRCs). Calculation of aqueous concentrations based on prescribed input values and a prescribed uptake model was also included. Between-laboratory coefficients of variation (CVs) in the analysis of target compounds were approximately 20% at concentrations of 100 ng g−1 and approximately 100% at concentrations of 0.01 ng g−1, which was similar to previous results for the analysis of biota samples. The analysis of PRCs yielded water sampling rates with a between-laboratory CV of 18% to 30%. The sampling rate model showed a nearly perfect match with the consensus values of retained PRCs. The implications of the present study for future interlaboratory exercises are discussed. Environ Toxicol Chem 2016;9999:1–6 |
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