Spiking of performance reference compounds in low density polyethylene and silicone passive water samplers |
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Authors: | Booij Kees Smedes Foppe van Weerlee Evaline M |
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Affiliation: | Netherlands Institute for Sea Research, Texel. booij@nioz.nl |
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Abstract: | A method for spiking performance reference compounds (PRCs) into low density polyethylene (LDPE) and silicone polymers is described. This method is based on equilibration of the polymers in aqueous/methanolic solutions of PRCs. Equilibration times range from minutes to hours for perdeuterated polyaromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) with a hydrophobicity in the range 3.9 < logKow < 7.7. Best results were obtained for methanol-water ratios of 80/20 (v/v). The method allows for the use of PRCs for in situ calibration of the uptake kinetics of these solvent-free sampling phases in a similar way as for semipermeable membrane devices (SPMDs). |
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