【摘要】 以巯基乙酸为稳定剂合成了CdTe量子点,并利用其与牛血清白蛋白（BSA）组成了荧光共振能量转移体系,考察BSA（供体）和CdTe量子点（受体）之间的荧光共振能量转移的最佳条件,建立了荧光共振能量转移增敏法测定Zn²⁺的新方法。在pH 7.4的Tris-HCl缓冲溶液中,Zn²⁺能对能量转移体系中CdTe量子点增敏从而测定锌的含量。Zn²⁺浓度在0.49—4.88μg/mL浓度范围内与CdTe量子点荧光强度呈现良好线性关系（r=0.9996）,检出限为0.13μg/mL,RSD为3.2%,平均回收率为99.5%（n=5）。方法适用于果汁饮料中微量锌的测定。更多还原

【Abstract】 CdTe quantum dots（QDs） were synthesized with thioglycolic acid（TGA ） as stabilizer.Fluorescence resonance energy transfer system was constituted by CdTe QDs and bovine serum albumin（BSA）,the optimal conditions of fluorescence resonance energy transfer between BSA （donor） and CdTe QDs（receptor） were investigated,and a new method for determination of zinc ions by fluorescence resonance energy transfer sensitization method was established.In Tris-HCl buffer solution at pH 7.4,zinc ions can enhance the fluorescence intensity of CdTe QDs in fluorescence resonance energy transfer system,thereby concentration of zinc ions was detected.Results showed that a linear relationship could be established between the fluorescence of CdTe QDs and the concentration of Zn²⁺ in the range of 0.49—4.88μg/mL（r=0.9996）,the detection limit was 0.13μg/mL,RSD and the average recovery were 3.2%and 99.5%（n=5）,respectively.This method can be applied to the determination of trace zinc in fruit drinks.更多还原