Calibration of a passive sampler based on stir bar sorptive extraction for the monitoring of hydrophobic organic pollutants in water

VRANA, Branislav, Lucie KOMANCOVÁ and Jaromír SOBOTKA. Calibration of a passive sampler based on stir bar sorptive extraction for the monitoring of hydrophobic organic pollutants in water. Talanta. AMSTERDAM: Elsevier, 2016, vol. 152, May, p. 90-97. ISSN 0039-9140. Available from: https://dx.doi.org/10.1016/j.talanta.2016.01.040.

Basic information

• Original name: Calibration of a passive sampler based on stir bar sorptive extraction for the monitoring of hydrophobic organic pollutants in water
• Authors: VRANA, Branislav (703 Slovakia, guarantor, belonging to the institution), Lucie KOMANCOVÁ (203 Czech Republic, belonging to the institution) and Jaromír SOBOTKA (203 Czech Republic, belonging to the institution).
• Edition: Talanta, AMSTERDAM, Elsevier, 2016, 0039-9140.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10406 Analytical chemistry
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 4.162
• RIV identification code: RIV/00216224:14310/16:00089980
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.talanta.2016.01.040
• UT WoS: 000373651000011
• Keywords in English: Stir bar sorptive extraction; Passive dosing; Passive sampling; Polydimethylsiloxane; Priority organic pollutants; Water monitoring
• Tags: AKR, rivok
• Tags: International impact, Reviewed

Abstract

A passive sampler based on stir bars coated with polydimethylsiloxane (PDMS) was calibrated for the measurement of time-weighted average concentrations of hydrophobic micropollutants, including polycyclic aromatic hydrocarbons, polychlorinated biphenyls and organochlorine pesticides, in water. Stir bar/water partition coefficients were measured by equilibrating bars with sheets made of silicone rubber material for which partition coefficients had been reported previously. Kinetic parameters characterising the exchange of analytes between stir bars and water were determined under controlled exposure conditions using a passive dosing system. The dosing system consisted of silicone rubber sheets with a large surface area, spiked with analytes. During stir bar sampler exposure, analytes partitioned from dosing sheets to water in the exposure tank and maintained constant exposure concentrations. Reversible and isotropic exchange kinetics of analytes between sampler and water was confirmed by measuring the release of a range of performance reference compounds (PRCs) from stir bars. Application of a two-resistance model confirmed that, except for hexachlorocyclohexane isomers, uptake of the test compounds under the experimental conditions was controlled by diffusion in the water boundary layer. This permits the application of PRCs for in situ calibration of uptake kinetics of test compounds to stir bars.

Links

• LM2011028, research and development project: Name: RECETOX ? Národní infrastruktura pro výzkum toxických látek v prostředí

Investor: Ministry of Education, Youth and Sports of the CR

• LO1214, research and development project: Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)

Investor: Ministry of Education, Youth and Sports of the CR

• 603437, interní kód MU: Name: SOLUTIONS - Solutions for present and future emerging pollutants in land and water resources management (Acronym: SOLUTIONS)

Investor: European Union, Cooperation