基于CdTe量子点的Cd(2+)的开启式电化学发光传感
Turn-on electrochemiluminescence sensing of Cd(2+) based on CdTe quantum dots.
作者信息
Song Honglei, Yang Miao, Fan Xinxin, Wang Haiyan
机构信息
Anhui Key Laboratory of Chemo-biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.
Anhui Key Laboratory of Chemo-biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Dec 10;133:130-3. doi: 10.1016/j.saa.2014.05.053. Epub 2014 May 28.
A simple and sensitive method for the detection of cadmium ion was proposed based on the electrochemiluminescence (ECL) of thioglycolic acid capped-CdTe quantum dots (CdTe QDs). The ECL of CdTe QDs was firstly quenched by introduction of S(2)(-) and was restored due to following addition of Cd(2+), on the basis of which, a "turn-on" ECL method for the detection of Cd(2+) was demonstrated. The ECL of CdTe QDs exhibited linear response toward Cd(2+) concentration in the range from 6.3nM to 3.4μM (R=0.999) with a detection limit of 2.1nM. The proposed assay was simple, sensitive, selective, and practicable in real water samples.
基于巯基乙酸包覆的CdTe量子点（CdTe QDs）的电化学发光（ECL），提出了一种简单且灵敏的镉离子检测方法。首先，通过引入S(2)(-)使CdTe QDs的ECL猝灭，随后加入Cd(2+)使其恢复，基于此，证明了一种用于检测Cd(2+)的“开启”ECL方法。CdTe QDs的ECL对Cd(2+)浓度在6.3 nM至3.4 μM范围内呈现线性响应（R = 0.999），检测限为2.1 nM。所提出的检测方法简单、灵敏、具有选择性，并且在实际水样中可行。
Zotero 插件