含有机质热水溶液与金、铜、汞相互作用的实验研究

本文用实验方法研究了含有机质(脂肪酸、腐植酸,氨基酸、原油、油田卤水等)热水溶液对岩石中Au、Cu、Hg的淋滤活化作用．结果表明,含一定有机质的水溶液对岩石中Au的淋滤能力超过含NaCl、KCl等盐类的卤水,含有机质和盐类的卤水的地球化学性质基本上取决于有机质的地球化学行为。原油、油田卤水对HgS有较强的溶解作用,腐植酸及低分子的脂肪酸、氨基酸对HgS的溶解基本上不起作用。丙氨酸是岩石中Cu的有效活化剂,常温下可使岩石中46%的Cu进入水溶液。

LABORATORY STUDIES OF INTERACTION BETWEENORGANIC MATTER AND Au, Hg, CuIN THERMAL WATER

This paper studied leaching and mobilization of Au , Hg and Cu from siltstone and carbonate by thermal water containing organic matter including fat acid, amino acid, humic acid, crude oil and brine from oil field in laboratory. The result shows that thermal water containing organic matter has higher ability to leach gold than that of brine containing Na-Cl, KCl etc. The geochemical behavior of thermal water containing organic mater and Na-Cl, KCl etc is determined by behavior of the organic matter. Crude oil and brine from oil field have comparable higher ability to dissolve HgS and extract Hg2- from water. Humic acid and simple fat acid, aniino acid seem play minor role in dissolution of HgS. Among the organic matters metioned above . lactamic acid is the only one which can dissove Cu effec-tively from siltstone in temperature below 150℃.