本文采用二种简便方法合成了新有机显色剂二硫代比林甲烷,在质量上和产量上取得较好结果。同时采用此新试剂对锡精矿和锡矿中存在的铋进行光度法测定。所得结果与原来的硫脲法比较,具有灵敏度高,选择性好,形成的稳合物较稳定,以及操作简便等特点。 In this paper, a new organic chromogenic reagent dithiobilin methane was synthesized by two simple methods, and good results were obtained in quality and yield. At the same time, the new reagent was used for the photometric determination of bismuth present in tin concentrates and tin deposits. The results obtained compared with the original thiourea method, with high sensitivity, good selectivity, stability of the formation of stable, and easy to operate and so on.