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硝酸银作为感光工业重要原材料之一,其纯度对照相性能有直接的影响,因杂质硫及硫化物的存在,对照相乳剂的感光性能起增感效果,对其含量不加控制则会带来较大灰雾。测定硝酸银中痕量硫化物的准确简捷方法,国内外至今没有报导,美国柯达感光材料公司也尚在研究之中。在环境监测方面,废水中硫化物的分析,系采用一套复杂的吹气装置,硫化物的蒸出采用60～80℃的水浴,还需钢瓶氮作载
Silver nitrate as one of the important raw materials for the photographic industry, its purity has a direct impact on the performance of the photographic phase, due to the presence of impurities sulfur and sulfide, the sensitometric performance of the photographic emulsion sensitization effect, uncontrolled its content will bring Big foggy. Accurate and simple method for the determination of trace sulphide in silver nitrate has not been reported at home and abroad. The photoconductive material company Kodak is also under study. In the field of environmental monitoring, the analysis of sulfide in wastewater uses a complicated inflatable device. Sulfide is distilled off using a water bath at 60 to 80 ° C,