在表面活性剂存在下,利用锡-苯芴酮体系测定锡已有文献[1,2]报道,但一般要进行萃取操作,且需在低温条件下测定.笔者研究发现,利用溴化十六烷基三甲铵和吐温80离子型和非离子型表面活性剂的协同增敏作用,使显色体系稳定性加强,灵敏度明显提高,用硫脲掩蔽铜,可不经分离直接水相测定铜基合金中锡,结果令人满意. In the presence of surfactants, the use of tin-phenyl fluorenone system has been reported in the literature [1,2] reported, but generally to be extracted, Alkyl Trimethylammonium and Tween 80 ionic and non-ionic surfactant synergistic sensitization, the color system to enhance the stability, significantly increased sensitivity, with thiourea masking copper, without direct separation of copper can be measured in the aqueous phase Tin alloy, the results are satisfactory.