A case of anisotropic exchange of non-polar chemicals with absorption-based passive samplers in water

Sampling rates for passive samplers exposed to a field-relevant peak of 42 organic pesticides

“…Passive sampling represents a cost-efficient technique, which can achieve low limits of quantification (LOQ) for some compounds with less labour and time compared to the methods discussed above that rely on the post-sampling extraction of compounds from water samples (Bundschuh et al, 2014;Taylor et al, 2020). Moreover, passive samplers only sample the compounds in the dissolved phase and degradation of compounds in the sampler has not been reported, though fouling of the sorbent phase might have an effect (Allan and Jenssen, 2019;Schäfer et al, 2008). Therefore, passive sampling methods have gained popularity for sampling toxicants such as pesticides in streams and have been recommended for use in governmental routine monitoring (Brack et al, 2017;Moschet et al, 2014;Szöcs et al, 2017).…”

Passive sampling and benchmarking to rank HOC levels in the aquatic environment

“…The general cleanup and GPC procedures have been described elsewhere 15,19 . Analysis for PRCs and OCs was performed on an Agilent 7890A gas chromatograph coupled to an Agilent 5975c inert XL EI/CI quadrupole mass spectrometer operated in single-ion monitoring mode (SIM) with electron impact ionisation (70 keV) 20,21 . Analyte separation was on a DB-5MS column (30 m, 0.25 mm inside diameter and 0.25 µm film thickness; Agilent JW Scientific) with a 1 µL pulsed split-less injection (pulse pressure 20 psi for 1.2 min and injector temperature of 300 °C).…”