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首页> 美国政府科技报告 >Effects of Humic Substances on the Interactions of Metal Ions with Organisms and Liposomes.
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Effects of Humic Substances on the Interactions of Metal Ions with Organisms and Liposomes.

机译：腐殖质对金属离子与生物和脂质体相互作用的影响。

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The problems investigated are: (1) the level at which humic acid (HA) affects the uptake of Pb(II), Cd(II), Zn(II), Hg(II), and Cu(II) by Chinook salmon, Oncorhynchus tschawytscha, and steelhead, Salmo gairdneri, eggs and excised molluscan, Anodonta californiensis and Unio sp., gills, and (2) the interactions of the above metal ions with liposomes. The findings are: (1a) the uptake of Hg(II) by eggs is most strongly affected HA, (1b) metal ions compete for sites on eggs and losses of Ca(II) and Mg(II) from eggs are induced by metal ions at 0.00001M, (1c) metal ions have little effect on amino acids losses from eggs, (1d) Hg(II) remains in egg chorions, while Cd(II) and Zn(II) migrate to the yoke, (1e) Hg(II), but not the other metals, enhances the loss of amino acids from gills, and (1f) HA increases the uptake of Hg(II) by gills, but does not affect the uptake of other metal ion; and (2a) metal ions bind to different sites on phospholipids, (2b) metal ions exhibit different binding patterns towards combinations of phospholipids, and (2c) only at 0.0001M do metal ions enhance the loss of dyes from liposomes.

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