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计算了水溶液中As(Ⅲ )的理论溶解度 ,分析了电沉积过程AsH3的形成机理 研究指出 ,As(Ⅲ )在碱性水溶液中的溶解度比在酸性或中性水溶液中大得多 ,因此 ,在碱性溶液中电沉积砷更有利 ,防止产生AsH3的有效途径是提高氢的析出电势
The theoretical solubility of As (Ⅲ) in aqueous solution was calculated and the formation mechanism of AsH3 in the electrodeposition process was analyzed. It was found that the solubility of As (Ⅲ) in alkaline aqueous solution is much larger than that in acidic or neutral aqueous solution. Electrodeposition of arsenic in alkaline solution is more favorable, and an effective way to prevent the production of AsH3 is to increase the precipitation potential of hydrogen