[ Objective] The study aimed to determine the Zn in fruit drinks with high efficiency and without pollution. [ Method] In the present of non-ion surface active agent Triton X-100, with the dithizone as the ehromogenic agent, the trace zinc in the fruit drinks was determined by the spectrophotometric method after the cloud point extraction. [ Result ] In the acetic acid-sodium acetate buffer solution with the pH value of 4.6, the Zn2- with the dithizone could form the stable complexes, with the λmax of 526 nm, the linear range of 0.2 - 1.2 μg/ml and the recovery of 96.0% - 102.5%. [ Conclusion] The spectrophotometric method after the cloud point extraction could be used to determine the trace zinc in the fruit drinks.%[目的]高效、无污染地测定果汁饮料中的锌.[方法]在非离子表面活性剂Triton X-100存在下,以双硫腙为显色剂,利用浊点萃取-分光光度法测定饮料中的痕量锌.[结果]在pH4.6的醋酸-醋酸钠缓冲溶液中,Zn2+与双硫腙形成稳定配合物,其λmax=526nm,线性范围为0.2 ～1.2 μg/ml,回收率为96.0％～102.5％.[结论]浊点萃取-分光光度法可用于果汁饮料中痕量锌的测定.
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