Water soluable CdTe quantum dots as fluorescence probes for copper(Ⅱ) detection

Authors

WANG Shuyuan, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
LI Zhonghai, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
FU Xiangjin, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
ZHANG Hui, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
LIJ Ilie, Central South University of Forestry and Technology, Changsha, Hunan 410004, China

Abstract

CdTe quantum dots(QDs) with high luminescent is synthesized in aqueous phase through one step which is capped with mercaptopropionic acid (MPA) and sodium citrate. As it is found that the fluorescence of CdTe QDs can be quenched by Cu²⁺, the quantitative analysis of Cu²⁺ has been established. The effects of pH value, concentration of the buffer, time of reaction and the concentration of QD are investigated. Under optimal conditions, it is found that the linear range is from 0 to 5×10⁷ mol/L and the limit of detection is 1×10⁸ mol/L.

Publication Date

4-28-2015

First Page

125

Last Page

129

DOI

10.13652/j.issn.1003-5788.2015.02.027

Recommended Citation

Shuyuan, WANG; Zhonghai, LI; Xiangjin, FU; Hui, ZHANG; and Ilie, LIJ (2015) "Water soluable CdTe quantum dots as fluorescence probes for copper(Ⅱ) detection," Food and Machinery: Vol. 31: Iss. 2, Article 27.
DOI: 10.13652/j.issn.1003-5788.2015.02.027
Available at: https://www.ifoodmm.cn/journal/vol31/iss2/27

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