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Potentially Significant Underestimation of PAHs in Contaminated Sediments

M. E. Fox

出版	National Water Research Institute, 1994
URL	http://books.google.com.hk/books?id=XoTKtAEACAAJ&hl=&source=gbs_api

註釋

"Freshwater and marine sediment samples collected for analysis of trace organic contaminants are frequently freeze dried and then stored, either cold or at ambient temperatures, sometimes for years, before extraction and analysis. The potential for loss of up to 99% of naphthalene was observed during the analysis of coal tar contaminated sediments from Hamilton Harbour, Lake Ontario. Investigations revealed that inadequate temperature control and excessive total exposure time during freeze drying produced large and highly variable losses of naphthalene and much smaller losses of higher molecular weight PAHs. Such under reporting of naphthalene may lead to serious underestimation of the acute toxicity of sediments to benthic fauna"--Abstract.