Breaking barriers in passive sampling: The potential of PTFE membranes in the monitoring of hydrophilic micropollutants DOI Creative Commons
Naomi Reymond, Nicolas Estoppey, Céline Weyermann

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 475, P. 134853 - 134853

Published: June 7, 2024

Passive samplers are key tools to sample hydrophilic micropollutants in water. Two main approaches address the influence of hydrodynamics: (1) determining site-specific sampling rate (RS) by characterizing kw, mass transfer coefficient water-boundary layer (WBL), and (2) reducing WBL impact using a diffusive material control uptake. The first requires calibration data second has only been achieved fragile material. This study assesses contaminants through polytetrafluoroethylene (PTFE; 30 µm thick), new membrane with lower sorption than commonly used polyethersulfone (PES). Combined for time Chemcatcher-like configuration, we calibrated modified 44 provide RS – kw relationships in-situ determination (approach 1). Micropollutants accumulated over 2000 times more on sorbent PTFE. PTFE-based (0.027 0.300 L day-1) were 2.5 higher previously reported PES. Membrane property measurements (porosity, tortuosity) indicated that accumulation is primarily controlled membrane. Extrapolation thicker PTFE membranes (≥ 100 µm) would shift uptake entirely river conditions 2). finding could enable prediction based properties, thus representing significant advancement passive sampling.

Language: Английский

Determination of diffusion coefficients through gels with non-negligible finite-volume effects in the compartments of the diffusion cell DOI Creative Commons
Jordi Sans‐Duñó, Joan Cecı́lia, Josep Galceran

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177779 - 177779

Published: Dec. 1, 2024

Diffusion cells are used to measure diffusion coefficients (D

Language: Английский

Citations

0
Double-faced Diffusive Gradient in Thin Films Sampler (df-DGT): Proposing an Improved DGT Sampler Design for Water Deployments DOI
Amauri Antônio Menegário, Eduardo de Almeida, Melina Borges Teixeira Zanatta

et al.

Analytica Chimica Acta, Journal Year: 2024, Volume and Issue: 1336, P. 343531 - 343531

Published: Dec. 6, 2024

Language: Английский

Citations

0
Breaking barriers in passive sampling: The potential of PTFE membranes in the monitoring of hydrophilic micropollutants DOI Creative Commons
Naomi Reymond, Nicolas Estoppey, Céline Weyermann

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 475, P. 134853 - 134853

Published: June 7, 2024

Passive samplers are key tools to sample hydrophilic micropollutants in water. Two main approaches address the influence of hydrodynamics: (1) determining site-specific sampling rate (RS) by characterizing kw, mass transfer coefficient water-boundary layer (WBL), and (2) reducing WBL impact using a diffusive material control uptake. The first requires calibration data second has only been achieved fragile material. This study assesses contaminants through polytetrafluoroethylene (PTFE; 30 µm thick), new membrane with lower sorption than commonly used polyethersulfone (PES). Combined for time Chemcatcher-like configuration, we calibrated modified 44 provide RS – kw relationships in-situ determination (approach 1). Micropollutants accumulated over 2000 times more on sorbent PTFE. PTFE-based (0.027 0.300 L day-1) were 2.5 higher previously reported PES. Membrane property measurements (porosity, tortuosity) indicated that accumulation is primarily controlled membrane. Extrapolation thicker PTFE membranes (≥ 100 µm) would shift uptake entirely river conditions 2). finding could enable prediction based properties, thus representing significant advancement passive sampling.

Language: Английский

Citations

0