新合成的一种新试剂N—苯基—N—(氨基对苯磺酸钠)硫脲(SPT),在醋酸介质中与Cu~(2+)形成绿色络合物,用于鉴定Cu~(2+),最低浓度0.53μg/mL,检出限量为0.018μg。在氨性溶液中与Ag~+形成茶色络合物的性质,用于鉴定Ag~+,最低浓度为10μg/mL,检出限量0.35μg。新试剂鉴定Cu~(2+)和Ag~+其灵敏度、选择性优于其他许多方法,对样品的鉴定也获满意结果。 A new reagent, N-phenyl-N- (sodium p-aminobenzenesulfonate) thiourea (SPT), was synthesized with Cu 2+ in acetic acid medium to identify Cu ~ (2+), the lowest concentration of 0.53μg / mL, the detection limit of 0.018μg. In ammoniacal solution with Ag ~ + form brown complex, used to identify Ag ~ +, the lowest concentration of 10μg / mL, the detection limit of 0.35μg. New reagents to identify Cu ~ (2+) and Ag ~ + its sensitivity, selectivity is superior to many other methods, the identification of samples also get satisfactory results.