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

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

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 32 polycyclic aromatic hydrocarbons (PAHs), 2 deuterated PAH analogues and 32 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