水環境学会誌
Online ISSN : 1881-3690
Print ISSN : 0916-8958
ISSN-L : 0916-8958
原著論文
初夏の谷津干潟における浮遊粒子状物質及び微量重金属濃度の経時変化と物質収支
町田 基石井 裕一藤村 葉子相川 正美早見 友基矢内 栄二瀧 和夫矢部 徹立本 英機
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ジャーナル フリー

2005 年 28 巻 1 号 p. 15-22

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The temporal variations of concentrations and fluxes of suspended particulate matter (SPM) and trace heavy metals of Fe, Pb, Cu, Zn and Cd were investigated at the Yatsu tidal flat connected to Tokyo Bay via the Yatsu and the Takase Channels in early summer, 2003. The inflow flux of SPM from Tokyo Bay to the tidal flat was greater than the outflow flux; the SPM was considered to be trapped on the tidal flat by a physicochemical cohesive force and biological functions. The heavy metals were transported as particulate and dissolved phases in the fluxes. In the fluxes of both of the channels, the particulate heavy metals were predominantly Fe, Pb and Zn, while the particulate and the dissolved heavy metals were equally attributed to Cu. The Pb, Zn and Cd contents in the SPM were higher than the contents of those dissolved in the flux, although the Fe and Cu contents were relatively low. Pb would be preferentially adsorbed to the SPM compared with Cu, whereas concentrations of both these elements were similar in dissolved phases.
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© 2005 公益社団法人 日本水環境学会
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