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Passive sampling: partition coefficients for a silicone rubber reference phase.

Yates, Kyari; Davies, Ian; Webster, Lynda; Pollard, Pat; Lawton, Linda; Moffat, Colin

Authors

Ian Davies

Lynda Webster

Pat Pollard

Colin Moffat



Abstract

Silicone rubber sheeting can be used as a passive sampling device for hydrophobic organic contaminants in the environment to determine the available concentrations in water and sediments. Reliable sampler–water partition coefficients are required to determine the sampling rates and the dissolved contaminant concentrations in water and in sediment pore water. Log partition coefficients (logKsr,w) for silicone rubber–water have been estimated for thirty-two polycyclic aromatic hydrocarbons (PAHs), two deuterated PAH analogues and thirty-two chlorobiphenyls (CBs) using the cosolvent method, with methanol as cosolvent. Strong linear relationships were found with literature values for the corresponding log octanol–water partition coefficients (logKow) for both CBs and PAHs, confirming that partitioning into the silicone rubber is strongly determined by the hydrophobicity of the compounds, which suggests logKow is a good predictor of logKsr,w and that absorption is the main mechanism for accumulation of analytes into the silicone rubber polymer.

Citation

YATES, K., DAVIES, I., WEBSTER, L., POLLARD, P., LAWTON, L. and MOFFAT, C. 2007. Passive sampling: partition coefficients for a silicone rubber reference phase. Journal of environmental monitoring [online], 9(10), pages 1116-1121. Available from: https://doi.org/10.1039/B706716J

Journal Article Type Article
Acceptance Date Jul 6, 2007
Online Publication Date Jul 27, 2007
Publication Date Oct 31, 2007
Deposit Date Jan 8, 2020
Publicly Available Date Jan 15, 2020
Journal Journal of environmental monitoring
Print ISSN 1464-0325
Electronic ISSN 1464-0333
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 9
Issue 10
Pages 1116-1121
DOI https://doi.org/10.1039/b706716j
Keywords Water pollution; Passive sampling; Organic contaminants; Silicone rubber
Public URL https://rgu-repository.worktribe.com/output/823498

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