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本文利用汞（Ⅱ）－ＴＴＰＳ４的显色反应间接分光光度法测定微量硫化物，灵敏度高，选择 性、稳定性均好．已应用本法测定了温泉水、工业废水中微量硫化物，结果满意．
In this paper, mercury (Ⅱ) -TTPS4 color reaction indirect spectrophotometric determination of trace sulfide, high sensitivity, selectivity, stability are good. This method has been applied to the determination of the thermal spring water, industrial wastewater trace sulfide, with satisfactory results.