英虞湾におけるエストロゲン様物質の挙動

概要

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The concentration of estrogenic substances in water and sediment was surveyed in Ago Bay, which is a typical enclosed sea area. Eight water samples and seven sediment samples were collected from the mouth of the Maekawa River at the entrance of the Ago Bay. To examine estrogenic substances, a yeast screen assay developed by Prof. J. P. Sumpter was used. The highest concentrations of estrogenic substances in water and sediment were noted in the Maekawa River (16.6ng·l-1 and 24.3ng·g-1). The concentrations gradually decreased towards the entrance of Ago Bay from the mouth of the Maekawa River. It was suggested that this decrease may be the result of dilution, adsorption to the seabed and biodegradation of the estrogenic substances. The water and sediment assay samples were fractionated by high pressure liquid chromatography and assayed to determine the chemical species of estrogenic substances (high pressure liquid chromatography-bioassay detection method). The estrogenic substances detected corresponded to E1 and/or E2, and were noted in all samples. These are typical natural female hormones, and their origin is presumably domestic sewage and other wastewater containing feces and urine.
社団法人　日本水環境学会の論文
2003-11-10