Application of an immobilized ionic liquid for the passive sampling of perfluorinated substances in water

Wang, Lei; Gong, Xinying; Wang, Ruonan; Gan, Zhiwei; Lü, Yuan; Sun, Hongwen

doi:10.1016/j.chroma.2017.08.001

Cited by 37 publications

(19 citation statements)

References 53 publications

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“…The presented research proved the possibility of using ionic liquids as the receiving phase in passive techniques for the sampling of compounds with a wide range of polarity. These conclusions were also confirmed in later studies by Wang et al (2017) who used only 30 mg of an imidazole ionic liquid in a POCIS-type sampler to accumulate perfluorinated compounds. Comparative studies showed that probes containing ionic liquids displayed a higher extraction capacity for short-chain perfluorinated compounds than POCIS-Oasis HLB and ensured kinetic uptake within 21 days.…”

Section: Innovative Sorbentssupporting

confidence: 61%

“…The lower effective thickness (at a lower sorbent mass) caused a higher speed of the water sample through the sorbent layer, which leads to a more efficient accumulation of microcystins. Other researchers also obtained high extraction efficiency and satisfactory sampling rates, using, e.g., 100 mg (Vermeirssen et al 2005;Zhang et al 2008), 30 mg (Wang et al 2017) or 54.5 mg (Jeong et al 2018a;Müller et al 2019) Oasis HLB. Considering the above, it can be concluded that the increase in sorbent mass will not always increase the uptake rate of the target chemical compounds.…”

Section: Hydrophilic-lipophilic-balanced Sorbent (Oasis Hlb)mentioning

confidence: 95%

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Pollutant analysis using passive samplers: principles, sorbents, calibration and applications. A review

2020

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Passive techniques are a constantly evolving method of monitoring water pollution, allowing the simultaneous sampling and concentration of selected chemical compounds. The most popular aqueous passive samplers are those in which sorbents are used as receiving phases, including: the Polar Organic Chemical Integrative Sampler (POCIS). Originally, POCIS contained the copolymer poly(divinylbenzene)-coN -vinylpyrrolidone, which allowed the collection of analytes with 0 ≤ log K ow ≤ 5, The limitation of the use of conventional samplers for sampling water pollutants only with a specific polarity has resulted in the fact that innovative sorbents are used more and more in POCIS-like samplers. In recent years, application of several innovative sorbents in POCIS-like samplers, for example: mixed-mode ion exchange polymeric sorbents, ionic liquids, molecularly imprinted polymers and carbon nanotubes has been described. This is the first review in which the usability of classical and innovative sorbents used in passive techniques principles has been collected and compared, and it has been shown that the type of sorbent can significantly affect the efficiency of sampling pollutants in the aquatic environment. The major points are the following: 1) principle of operation, of passive samplers, 2) characteristics of POCIS and sorbents used as receiving phases, 3) sampler calibration methods and environmental factors affecting their operation, 4) a detailed description of the application possibilities of conventional and innovative sorbents used in POCIS-like samplers. This review shows the growing number of works on the use of innovative sorption materials to overcome limitation of originally designed POCIS, and the published results, allow us to conclude that the type of sorbent may be a key factor in increasing the applicability of POCIS-like samplers.

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Section: Innovative Sorbentssupporting

confidence: 61%

Section: Hydrophilic-lipophilic-balanced Sorbent (Oasis Hlb)mentioning

confidence: 95%

Pollutant analysis using passive samplers: principles, sorbents, calibration and applications. A review

2020

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“…The opposite conclusion has also been proposed by Charlestra et al, where the association of hydrophilic pesticides with DOM limited the sorption extent of pollutants onto the membrane surface in POCIS [77]. Moreover, several studies found that diffusive mass transfer of hydrophobic organic pollutants through the WBL could be enhanced by the presence of DOM [78,79]. These different results suggested that several factors apart from hydrophobicity influenced the R s values, for instance, the sorption of pharmaceuticals to DOM was driven not only by K ow of compounds, but also by the combined effect of DOM properties, pH value, and chemical properties in the sorption process [80,81].…”

Section: Dommentioning

confidence: 82%

Sampling Rate of Polar Organic Chemical Integrative Sampler (POCIS): Influence Factors and Calibration Methods

Wang

Liu

et al. 2020

Applied Sciences

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As a passive sampling device, the polar organic chemical integrative sampler (POCIS) has the characteristics of simple operation, safety, and reliability for assessing the occurrence and risk of persistent and emerging trace organic pollutants. The POCIS, allowing for the determination of time-weighted average (TWA) concentration of polar organic chemicals, exhibits good application prospects in aquatic environments. Before deploying the device in water, the sampling rate (Rs), which is a key parameter for characterizing pollutant enrichment, should be determined and calibrated accurately. However, the Rs values strongly depend on experimental hydrodynamic conditions. This paper provides an overview of the current situation of the POCIS for environmental monitoring of organic pollutants in an aquatic system. The principle and theory of the POCIS are outlined. In particular, the effect factors such as the ambient conditions, pollutant properties, and device features on the Rs are analyzed in detail from aspects of impact dependence and mechanisms. The calibration methods of the Rs under laboratory and in situ conditions are summarized. This review offers supplementary information on comprehensive understanding of mechanism and application of the POCIS. Nevertheless, the Rs were impacted by a combined effect of solute–sorbent–membrane–solution, and the influence extent of each variable was still unclear. On this basis, the ongoing challenges are proposed for the future application of the POCIS in the actual environment, for instance, the need for this device to be improved in terms of quantitative methods for more accurate measurement of the Rs.

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“…Several studies (Lai et al, 2018) have tested passive sampling systems to measure aqueous PFAS concentration including the polar organic chemical integrative sampler (POCIS) (Kaserzon et al, 2014;Kaserzon et al, 2019;Li et al, 2016;Persson, 2015), diffusive gradient thin film (Challis, 2018), and use of specialized adsorbents (Wang et al, 2017). POCIS samplers use a small particle size adsorbent placed behind diffusion-limiting (sub-micron pore size) membranes, which contact the water.…”

Section: Introductionmentioning

confidence: 99%

Passive sampler designed for per‐ and polyfluoroalkyl substances using polymer‐modified organosilica adsorbent

et al. 2021

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A passive sampler designed to measure per-and polyfluoroalkyl substances (PFAS) was evaluated to determine chemical uptake rates under a variety of conditions. The sampler design is simple and robust, using organosilica modified with cross-linked amine polymer in an high density polyethylene housing retained with polypropylene mesh. The addition of amine groups as a weak ionexchange resin in combination with Cu 2+ was designed to promote binding of short-chain PFAS. A five-fold improvement in perfluorobutanoic acid adsorption was measured when Cu 2+ was added to the polyethylenimine polymer. The samplers showed an integrated response to all analytes tested except for shortchain PFAS. Sampling rates of PFAS analytes from simulated groundwater were on average 10 mL/day at flow rates of 0.038-1.9 cm/min. Relatively low variability in sampling rate was observed over the range of laboratory tested conditions (representing common conditions in environmental waters) including elevated ionic strength, sulfate concentration, and humic acid content.

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Application of an immobilized ionic liquid for the passive sampling of perfluorinated substances in water

Cited by 37 publications

References 53 publications

Pollutant analysis using passive samplers: principles, sorbents, calibration and applications. A review

Pollutant analysis using passive samplers: principles, sorbents, calibration and applications. A review

Sampling Rate of Polar Organic Chemical Integrative Sampler (POCIS): Influence Factors and Calibration Methods

Passive sampler designed for per‐ and polyfluoroalkyl substances using polymer‐modified organosilica adsorbent

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