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Calibration of Perfluorinated Alkyl Acid Uptake Rates by a Tube Passive Sampler in Water
https://orcid.org/0000-0002-8902-8434
https://orcid.org/0000-0002-3091-1054
https://orcid.org/0000-0003-1941-4732
https://orcid.org/0000-0001-8796-3229
Per- and polyfluoroalkyl substances (PFAS) are a group of 4000+ man-made compounds of great concern due to their environmental ubiquity and adverse effects. Despite general interest, few reliable detection tools for integrative passive sampling of PFAS in water are available. A microporous polyethylene tube with a hydrophilic–lipophilic balance sorbent could serve as a flow-resistant passive sampler for PFAS. The tube’s sampling rate, R s, was predicted based on either partitioning and diffusion or solely diffusion. At 15 °C, the laboratory-measured R s for perfluorohexanoic acid of 100 ± 81 mL day–1 was better predicted by a partitioning and diffusion model (48 ± 1.8 mL day–1) across 10–60 cm s–1 water flow speeds (15 ± 4.2 mL day–1 diffusion only). For perfluorohexane sulfonate, R s at 15 °C were similarly different (110 ± 60 mL day–1 measured, 120 ± 63 versus 12 ± 3.4 mL day–1 in respective models). R s values from field deployments were in between these estimates (46 ± 40 mL day–1 for perfluorohexanoic acid). PFAS uptake was not different for previously biofouled membranes in the laboratory, suggesting the general applicability of the sampler in environmental conditions. This research demonstrates that the polyethylene tube’s sampling rates are sensitive to the parameterization of the models used here and partitioning-derived values should be used.
A tube passive sampler design was investigated for deriving sampling rates of nine PFAA with good agreement between measurements in the laboratory, field, and model derived values.
Calibration of Perfluorinated Alkyl Acid Uptake Rates by a Tube Passive Sampler in Water
https://orcid.org/0000-0002-8902-8434
https://orcid.org/0000-0002-3091-1054
https://orcid.org/0000-0003-1941-4732
https://orcid.org/0000-0001-8796-3229
Per- and polyfluoroalkyl substances (PFAS) are a group of 4000+ man-made compounds of great concern due to their environmental ubiquity and adverse effects. Despite general interest, few reliable detection tools for integrative passive sampling of PFAS in water are available. A microporous polyethylene tube with a hydrophilic–lipophilic balance sorbent could serve as a flow-resistant passive sampler for PFAS. The tube’s sampling rate, R s, was predicted based on either partitioning and diffusion or solely diffusion. At 15 °C, the laboratory-measured R s for perfluorohexanoic acid of 100 ± 81 mL day–1 was better predicted by a partitioning and diffusion model (48 ± 1.8 mL day–1) across 10–60 cm s–1 water flow speeds (15 ± 4.2 mL day–1 diffusion only). For perfluorohexane sulfonate, R s at 15 °C were similarly different (110 ± 60 mL day–1 measured, 120 ± 63 versus 12 ± 3.4 mL day–1 in respective models). R s values from field deployments were in between these estimates (46 ± 40 mL day–1 for perfluorohexanoic acid). PFAS uptake was not different for previously biofouled membranes in the laboratory, suggesting the general applicability of the sampler in environmental conditions. This research demonstrates that the polyethylene tube’s sampling rates are sensitive to the parameterization of the models used here and partitioning-derived values should be used.
A tube passive sampler design was investigated for deriving sampling rates of nine PFAA with good agreement between measurements in the laboratory, field, and model derived values.
Calibration of Perfluorinated Alkyl Acid Uptake Rates by a Tube Passive Sampler in Water
https://orcid.org/0000-0002-8902-8434
https://orcid.org/0000-0002-3091-1054
https://orcid.org/0000-0003-1941-4732
https://orcid.org/0000-0001-8796-3229
Per- and polyfluoroalkyl substances (PFAS) are a group of 4000+ man-made compounds of great concern due to their environmental ubiquity and adverse effects. Despite general interest, few reliable detection tools for integrative passive sampling of PFAS in water are available. A microporous polyethylene tube with a hydrophilic–lipophilic balance sorbent could serve as a flow-resistant passive sampler for PFAS. The tube’s sampling rate, R s, was predicted based on either partitioning and diffusion or solely diffusion. At 15 °C, the laboratory-measured R s for perfluorohexanoic acid of 100 ± 81 mL day–1 was better predicted by a partitioning and diffusion model (48 ± 1.8 mL day–1) across 10–60 cm s–1 water flow speeds (15 ± 4.2 mL day–1 diffusion only). For perfluorohexane sulfonate, R s at 15 °C were similarly different (110 ± 60 mL day–1 measured, 120 ± 63 versus 12 ± 3.4 mL day–1 in respective models). R s values from field deployments were in between these estimates (46 ± 40 mL day–1 for perfluorohexanoic acid). PFAS uptake was not different for previously biofouled membranes in the laboratory, suggesting the general applicability of the sampler in environmental conditions. This research demonstrates that the polyethylene tube’s sampling rates are sensitive to the parameterization of the models used here and partitioning-derived values should be used.
A tube passive sampler design was investigated for deriving sampling rates of nine PFAA with good agreement between measurements in the laboratory, field, and model derived values.
Calibration of Perfluorinated Alkyl Acid Uptake Rates by a Tube Passive Sampler in Water
Dunn, Matthew (author) / Becanova, Jitka (author) / Snook, Jarod (author) / Ruyle, Bridger (author) / Lohmann, Rainer (author)
ACS ES&T Water ; 3 ; 332-341
2023-02-10
Article (Journal)
Electronic Resource
English
| American Chemical Society | 2023
| American Chemical Society | 2023
Passive sampling of perfluorinated chemicals in water: In-situ calibration
| Online Contents | 2014
Passive sampling of perfluorinated chemicals in water: Flow rate effects on chemical uptake
| Online Contents | 2013