A highly selective and simple fluorescent probe for salbutamol detection based on thioglycolic acid-capped CdTe quantum dots

文献类型： 外文期刊

第一作者： Qiu, Suyan

作者： Qiu, Suyan

作者机构：

关键词： CdTe quantum dots; Thioglycolic acid; Salbutamol; Fluorescent probe

期刊名称：SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY （ 影响因子：4.098； 五年影响因子：3.464 ）

ISSN： 1386-1425

年卷期： 2021 年 247 卷

页码：

收录情况： SCI

摘要： In this paper, a highly fluorescent water-soluble CdTe quantum dots (CdTe QDs) stabilized with thioglycolic acid (TGA) were synthesized for the quantitative and selective determination of salbutamol (SAL). When ten different of 2.09 x 10(-6) mol L-1 alpha-2 adrenoceptor agonist were added to 4.38 x 10(-4) mol L-1 CdTe QDs solution, the fluorescence signal of the CdTe QDs quenched obviously by SAL with 57.32% and 0.815% - 7.00% for other nine kinds of veterinary medicine, such as tulobuterol, fenoterol, phenylethanamine A, simatero, penbutolol, clenbuterol, ractopamine, terbutaline and clorprenaline. The result shows that the CdTe QDs is highly sensitive sensor for SAL. The quenching mechanism has been investigated by absorption spectroscopy and KSV at different temperatures, and shew a static quenching process than dynamic quenching. Under the optimal conditions, respectively the straight line equation (F-0/F = 0.1491 x 10(6) C + 1.3078) was found between the relative fluorescence intensity and the concentration of SAL was in the range of 6.27 x 10(-8) to 2.09 x 10(-7) mol L-1, and the limit of detection was 4.2 x 10(-8) mol L-1. The proposed method has been applied to the determination of SAL in pig urine samples. (C) 2020 Elsevier B.V. All rights reserved.

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