Performance comparison of silicone and low-density polyethylene as passive samplers in a global monitoring network for aquatic organic contaminants

Sobotka, Jaromír; Smedes, Foppe; Vrana, Branislav

doi:10.1016/j.envpol.2022.119050

Cited by 16 publications

(18 citation statements)

References 42 publications

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“…Samplers were processed in three extraction batches according to Table S3 (see the “analysis batch” column), slightly differing in their processing, as described in detail in Section S1. Compounds were analyzed by GC–MS/MS; further details are given in Sobotka et al…”

Section: Methodsmentioning

confidence: 99%

“…Samplers were packed in separate amber jars and stored in a freezer at −18 °C until shipment and exposure. Further details are provided in Sobotka et al 24 Sampling Locations and Deployments. Sampling was performed in the period between July 2016 and October 2020; the worldwide sampling locations aimed to represent sites away from known point sources (Figure 1).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…Volunteer network partners worldwide (Table S2-1) deployed and retrieved the samplers according to agreed standard operating procedures. In the marine environment, the samplers were mounted in durable stainless steel cages 25 or custom-made holders equipped with sampler sheet mounting positions (for details, see Figure S2-1 in Sobotka et al 24 ) attached to the available structures (stationary buoys, moorings). In the freshwater environment, the samplers were mounted (i) on ∼4 cm steel wire mesh ("BBQ") frames using cable ties, (ii) on the "tube shroud" holder, or (iii) on a custom-made frame with mounting plates designed for the cage (for details, see ref 24).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…During these initial AQUA-GAPS/MONET deployments, the two most widely used passive sampling materials, i.e., low-density polyethylene (LDPE) and silicone rubber (SSP, polydimethyl siloxane), were co-deployed at all sites. The data obtained from these deployments were used for a detailed comparison of the performance of the two passive sampling phases . In brief, for almost all target compounds, the detection frequencies were slightly higher in the SSP than in the LDPE: 87 versus 78% for Σ 7 PCBs, 90 vs 80% for ΣDDTs, 41 vs 16% for ΣHCHs, and 62 vs 40% for other OCs .…”

Section: Introductionmentioning

confidence: 99%

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Passive-Sampler-Derived PCB and OCP Concentrations in the Waters of the World─First Results from the AQUA-GAPS/MONET Network

Lohmann

Vrana

Muir

et al. 2023

Environ. Sci. Technol.

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Persistent organic pollutants (POPs) are recognized as pollutants of global concern, but so far, information on the trends of legacy POPs in the waters of the world has been missing due to logistical, analytical, and financial reasons. Passive samplers have emerged as an attractive alternative to active water sampling methods as they accumulate POPs, represent time-weighted average concentrations, and can easily be shipped and deployed. As part of the AQUA-GAPS/MONET, passive samplers were deployed at 40 globally distributed sites between 2016 and 2020, for a total of 21 freshwater and 40 marine deployments. Results from silicone passive samplers showed α-hexachlorocyclohexane (HCH) and γ-HCH displaying the greatest concentrations in the northern latitudes/Arctic Ocean, in stark contrast to the more persistent penta (PeCB)-and hexachlorobenzene (HCB), which approached equilibrium across sampling sites. Geospatial patterns of polychlorinated biphenyl (PCB) aqueous concentrations closely matched original estimates of production and use, implying limited global transport. Positive correlations between log-transformed concentrations of Σ 7 PCB, ΣDDTs, Σendosulfan, and Σchlordane, but not ΣHCH, and the log of population density (p < 0.05) within 5 and 10 km of the sampling sites also supported limited transport from used sites. These results help to understand the extent of global distribution, and eventually time-trends, of organic pollutants in aquatic systems, such as across freshwaters and oceans. Future deployments will aim to establish time-trends at selected sites while adding to the geographical coverage.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Passive-Sampler-Derived PCB and OCP Concentrations in the Waters of the World─First Results from the AQUA-GAPS/MONET Network

Lohmann

Vrana

Muir

et al. 2023

Environ. Sci. Technol.

Self Cite

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“…24 To address the abovementioned issue, a microcosm system including water and sediment with different AC doses was constructed, and the sediment was spiked with typical HOCs, such as organophosphorus flame retardants (OPFRs) and polybrominated diphenyl ethers (PBDEs). The diffusion fluxes of the target compounds across the sediment−water interface were determined by an integrated passive sampling device with polydimethylsiloxane (PDMS) film as the sorbent phase 25 and a classical two-point quantitation method. The present study aimed to establish a model correlating the diffusion flux of a target chemical and AC dose and offer effective governance measures in sediment remediation.…”

Section: ■ Introductionmentioning

confidence: 99%

Model of Activated Carbon Dose and Sediment–Water Diffusion Fluxes of Hydrophobic Organic Chemicals: Implications for Sediment Remediation

Qiu

et al. 2023

ACS EST Water

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Activated carbon (AC) amendment is an effective strategy for remediating contaminated sediment by hydrophobic organic chemicals. Reductions of porewater chemical concentrations have been used for estimating recommended AC dose for effective sediment remediation, but the AC dose may have large uncertainties resulting from site-specific parameters. The present study examined sediment−water diffusion flux as an alternative assessment parameter by correlating diffusion fluxes of organophosphorus flame retardants (OPFRs) and polybrominated diphenyl ethers (PBDEs) with AC doses. AC at doses of 8−36% substantially reduced sediment porewater concentrations and diffusion fluxes of the target chemicals. Diffusion fluxes of OPFRs and PBDEs normalized by their corresponding sediment concentrations significantly correlated with total organic carbon contents (r 2 = 0.57−0.93). A model was established to estimate the required AC dose for effective sediment amendment from the diffusion flux and sediment concentration of a target chemical. Using contaminated sediment in a typical e-waste recycling zone, the AC doses (0.1 ± 1.3−12.8 ± 0.3%) required to reduce 90% of diffusion fluxes for tri-n-butyl phosphate and BDE-17 were within the recommended range (1.9 ± 3.6−5.6 ± 8.3%) in lowering porewater concentrations by the same magnitude. This finding suggested the feasibility of the new model in supporting sediment remediation.

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Development of a supramolecular solvent–based extraction method for application to quantitative analyses of a wide range of organic contaminants in indoor dust

Marcinekova,

Melymuk,

Bohlin-Nizzetto

et al. 2024

Anal Bioanal Chem

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This study investigates the efficacy of supramolecular solvent (SUPRAS) in extracting a diverse spectrum of organic contaminants from indoor dust. Initially, seven distinct SUPRAS were assessed across nine categories of contaminants to identify the most effective one. A SUPRAS comprising Milli-Q water, tetrahydrofuran, and hexanol in a 70:20:10 ratio, respectively, demonstrated the best extraction performance and was employed for testing a wider array of organic contaminants. Furthermore, we applied the selected SUPRAS for the extraction of organic compounds from the NIST Standard Reference Material (SRM) 2585. In parallel, we performed the extraction of NIST SRM 2585 with conventional extraction methods using hexane:acetone (1:1) for non-polar contaminants and methanol (100%) extraction for polar contaminants. Analysis from two independent laboratories (in Norway and the Czech Republic) demonstrated the viability of SUPRAS for the simultaneous extraction of twelve groups of organic contaminants with a broad range of physico-chemical properties including plastic additives, pesticides, and combustion by-products. However, caution is advised when employing SUPRAS for highly polar contaminants like current-use pesticides or volatile substances like naphthalene.

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Performance comparison of silicone and low-density polyethylene as passive samplers in a global monitoring network for aquatic organic contaminants

Cited by 16 publications

References 42 publications

Passive-Sampler-Derived PCB and OCP Concentrations in the Waters of the World─First Results from the AQUA-GAPS/MONET Network

Passive-Sampler-Derived PCB and OCP Concentrations in the Waters of the World─First Results from the AQUA-GAPS/MONET Network

Model of Activated Carbon Dose and Sediment–Water Diffusion Fluxes of Hydrophobic Organic Chemicals: Implications for Sediment Remediation

Development of a supramolecular solvent–based extraction method for application to quantitative analyses of a wide range of organic contaminants in indoor dust

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