|Passive sampling of perfluorinated chemicals in water: In-situ calibration|Kaserzon, S.L.; Hawker, D.W.; Booij, K.; O'Brien, D.S.; Kennedy, K.; Vermeirssen, E.L.M.; Mueller, J.F. (2014). Passive sampling of perfluorinated chemicals in water: In-situ calibration. Environ. Pollut. 186: 98-103. dx.doi.org/10.1016/j.envpol.2013.11.030
In: Environmental Pollution. Elsevier: Barking. ISSN 0269-7491; e-ISSN 1873-6424, meer
Perfluorinated chemicals; Passive sampling; Polar organic chemicalintegrative sampler; Passive flow monitor; Sampling rate; Flow rate
|Auteurs|| || Top |
- Kaserzon, S.L.
- Hawker, D.W.
- Booij, K., meer
- O'Brien, D.S.
- Kennedy, K.
- Vermeirssen, E.L.M.
- Mueller, J.F.
Perfluorinated chemicals (PFCs) have been recognised as environmental pollutants that require monitoring. A modified polar organic chemical integrative sampler (POCIS) is able to quantify aqueous PFCs. However, with varying external water velocity, PFC sampling rates (R-s) may change, affecting accuracy of derived water concentrations. To facilitate field deployment of this sampler, two methods of in-situ calibration were investigated: performance reference compounds (PRCs) and passive flow monitors (PFMs). Increased R-s's (by factors of 1.2-1.9) with PFM loss rate (g d(-1)) were observed for some PFCs. Results indicate PFMs can be used to correct PFC specific Rs's for more reliable estimates of environmental concentrations with a precision of about 0.01 L d(-1). Empirical models presented provide an improved means for aquatic monitoring of PFCs. The PRC approach was unsuccessful, confirming concern as to its applicability with such samplers.