Comparison of five integrative samplers in laboratory for the monitoring of indicator and dioxin-like polychlorinated biphenyls in water
Language English Country Great Britain, England Media print-electronic
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
24200044
DOI
10.1016/j.chemosphere.2013.09.011
PII: S0045-6535(13)01240-X
Knihovny.cz E-resources
- Keywords
- Integrative samplers, Modeling, Polychlorinated biphenyls, Time weighted average concentration, Water monitoring,
- MeSH
- Water Pollutants, Chemical analysis MeSH
- Dioxins analysis MeSH
- Environmental Monitoring instrumentation methods MeSH
- Polychlorinated Biphenyls analysis MeSH
- Polychlorinated Dibenzodioxins MeSH
- Temperature MeSH
- Water chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
- Names of Substances
- Water Pollutants, Chemical MeSH
- Dioxins MeSH
- Polychlorinated Biphenyls MeSH
- Polychlorinated Dibenzodioxins MeSH
- Water MeSH
This study aimed at evaluating and comparing five integrative samplers for the monitoring of indicator and dioxin-like polychlorinated biphenyls (PCBs) in water: semi-permeable membrane device (SPMD), silicone rubber, low-density polyethylene (LDPE) strip, Chemcatcher and a continuous-flow integrative sampler (CFIS). These samplers were spiked with performance reference compounds (PRCs) and then simultaneously exposed under constant agitation and temperature in a 200 L stainless steel tank for periods ranging from one day to three months. A constant PCB concentration of about 1 ng·L(-1) was achieved by immersing a large amount of silicone rubber sheets ("dosing sheets") spiked with the target PCBs. The uptake of PCBs in the five samplers showed overall good repeatability and their accumulation was linear with time. The samplers SPMD, silicone rubber and LDPE strip were the most promising in terms of achieving low limits of quantification. Time-weighted average (TWA) concentrations of PCBs in water were estimated from uptake of PCBs using the sampling rates calculated from the release of PRCs. Except for Chemcatcher, a good agreement was found between the different samplers and TWA concentrations ranged between 0.4 and 2.8 times the nominal water concentration. Finally, the influence of calculation methods (sampler-water partition coefficients, selected PRCs, models) on final TWA concentrations was studied.
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