Summary
Organohalogens may routinely be determined in water and wastewater samples as group parametres in fractionated analyses such as granular, activated carbon (GAC) adsorbable organic halogens (AOX), extractable organic halogens (EOX), or purgable organic halogens (POX). Generally, organohalogens with propensity for bioaccumulation are found in the EOX-fraction of the water or wastewater and the purpose of this study was to develope and evaluate a method for the determination of EOX in living tissue, in casu blue mussels (Mytilus edulis). Mussel soft tissue samples were homogenized, grinded with sodium sulphate (sic.) and soxhlet extracted overnight with pentane. A small amount of hexadecane was added, before the volume of extract was gently reduced, until the pentane had evaporated. The content of organohalogens in the reduced extract was determined by combustion of the extract followed by a microcoulometric titration of the evolved hydrogen halide in a Dohrmann DX 20 TOX-analyzer. Using 50 g wet mass of mussel samples the method is applicable in the range of 2–50 Cl (μg/g living tissue. Precision is ≈ 10% (coefficient of variation), and recovery is estimated to 90% from p-dichlorobenzene and 2,4,6-trichlorophenol standard additions to the mussel samples. Field samples of mussels from Danish coastal waters gave results of accumulated organohalogens between 5 and 20 Cl μg/g living tissue.
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© 1986 ECSC, EEC, EAEC, Brussels and Luxembourg
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Grøn, C., Folke, J. (1986). Determination of Extractable Organohalogens in Living Tissue. In: Bjørseth, A., Angeletti, G. (eds) Organic Micropollutants in the Aquatic Environment. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4660-6_17
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DOI: https://doi.org/10.1007/978-94-009-4660-6_17
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