Heavy-metal pollution and its state in the diatom distribution along with heavy-metal speciation in rivers at the feet of old copper mines, Ishikawa prefecture

YAMADA Takashi, SUMITA Michiaki, NAKANISHI Yoshiaki, HONJO Takaharu

doi:10.2116/bunsekikagaku.53.883

Bibliographic Information

Other Title

石川県旧銅鉱山下の河川における付着珪藻群集の分布と化学種分析からみた重金属汚染状態
イシカワケンキュウドウコウザンカノカセンニオケルフチャクケイソウグンシュウノブンプトカガクシュブンセキカラミタジュウキンゾクオセンジョウタイ

Search this article

Abstract

In this study, we tried to solve heavy-metal pollution and its state in rivers from both chemical and biological viewpoints. The sediment (sediment on the river bed and attached substances, etc.) was taken in rivers at the feet of old copper mines, Ishikawa prefecture. Its wet ashing and sequential extraction were performed. The total copper content and the copper contents of all fractions containing the types of associations between copper and the sediment were determined. The diatom taxa, growing in attached substances on psephite, were also identified. As a result, the correlation between the ratio of the exchangeable fraction (e.g. ion-exchangeable chemical species and carbonate) to the total contents of copper and the relative abundance (as the ratio of the number of each taxon to the total number of diatom) of Achnanthes minutissima, which is specified as an indicator diatom of heavy-metal pollution, was observed. The exchangeable fraction contained toxic species of copper. It seems that they have an effect on biota containg diaton in rivers.<br>

Journal

BUNSEKI KAGAKU

BUNSEKI KAGAKU 53 (9), 883-889, 2004

The Japan Society for Analytical Chemistry

Keywords

Details 詳細情報について

Export