An in-situ assessment of low-density polyethylene and silicone rubber passive samplers using methods with and without performance reference compounds in the context of investigation of polychlorinated biphenyl sources in rivers

Details

Serval ID
serval:BIB_27CF9DFD2615
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
An in-situ assessment of low-density polyethylene and silicone rubber passive samplers using methods with and without performance reference compounds in the context of investigation of polychlorinated biphenyl sources in rivers
Journal
Science of The Total Environment
Author(s)
Estoppey Nicolas, Schopfer Adrien, Fong Camille, Delémont Olivier, De Alencastro Luiz F., Esseiva Pierre
ISSN
0048-9697
ISSN-L
0048-9697
Publication state
Published
Issued date
12/2016
Peer-reviewed
Oui
Volume
572
Pages
794-803
Language
english
Notes
RN53
Abstract
This study firstly aims to assess the field performances of low density polyethylene (LDPE) and silicone rubber (SR) samplers for the monitoring of polychlorinated biphenyls (PCBs) in water regarding the uptake, the sampling rate (RS) estimated by using performance reference compounds (PRCs) and the time-weighted average (TWA) concentrations. The second aim is to evaluate the efficiency of these samplers to investigate PCB sources (localization and imputation steps) using methods with and without PRCs to correct for the impact of water velocity on the uptake. Samplers spiked with PRCs were deployed in the outfalls of two PCB sources and at 8 river sites situated upstream and downstream of the outfalls. After 6weeks, the uptake of PCBs in the linear phase was equivalent in LDPE and SR but 5 times lower in LDPE for PCBs approaching equilibrium. PRC-based RS and water velocity (0.08 to 1.21ms-1) were well correlated in river (LDPE: R2=0.91, SR: R2=0.96) but not in outfalls (higher turbulences and potential release of PRCs to air). TWA concentrations obtained with SR were slightly higher than those obtained with LDPE (factor 1.4 to 2.6 in river) likely because of uncertainty in sampler-water partition coefficient values. Concentrations obtained through filtration and extraction of water samples (203L) were 1.6 and 5.1 times higher than TWA concentrations obtained with SR and LDPE samplers, respectively. PCB sources could efficiently be localized when PRCs were used (increases of PCB loads in river) but the impact of high differences of water velocity was overcorrected (leading sometimes to false positives and negatives). Increases of PCB loads in the river could not be entirely imputed to the investigated sources (underestimation of PCBs contributing to the load increases). A method without PRCs (relationship between uptake and water velocity) appeared to be a good complementary method for LDPE.
Keywords
Environmental Engineering, Waste Management and Disposal, Pollution, Environmental Chemistry
Pubmed
Web of science
Create date
15/08/2016 13:20
Last modification date
20/08/2019 13:07
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