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引言金的氯络合物(AuCl_4~-)仅在强氧化剂存在的条件下含氯化物的酸性溶液中才是稳定的。所以,金作为氯络合物的表生化学再活动只能发生在氧化作用发育的具酸性条件的矿床中;又由于在氯化物介质中银的溶解度也相对地高,这样由于金的氯化物的还原作用而沉淀的次生金的纯度就很高,这是在次生金中常见的情况。与碱性的、盐度低的溶液发生反应的金和银可以形成具有中等亚稳定的、还原性的溶解硫化物类稳定络合物。金可与硫代硫酸根离子S_2O_3~(2-)络合,也许还与亚硫酸根离子SO_3~(2-)络合,而还原的硫不大可能在金的表生活动中起
INTRODUCTION Gold chloride complexes (AuCl_4 ~ -) are stable only in acidic solutions containing chloride in the presence of strong oxidizing agents. Therefore, gold as a chloride complex of epigenetic reactivation can only occur in the oxidation of the development of acidic conditions in the deposit; and because of the solubility of silver in chloride medium is relatively high, so that the gold chloride The secondary gold precipitated by the reduction is very pure, which is common in secondary gold. Gold and silver, which react with alkaline, low-salinity solutions, can form stable sulfide complexes with moderate metastability and reducibility. Gold may complex with thiosulfate ion S 2 O 3 2-, and may also complex with sulfite ion SO 3 2-, while reduced sulfur is unlikely to play a role in epigenetic activity of gold