A highly selective fluorescent probe for the determination of Se(IV) in multivitamin tablets

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• 作者：Guodong Feng ; Yanna Dai ; Haiyan Jin ; Pengchong Xue ; Yanfu Huan ; Hongyan Shan ; Qiang Fei
• 关键词：Rhodamine 6G ; Diethylenetriamine ; Fluorescent probe ; Enhancement ; Selenium ; Multivitamins
• 刊名：Sensors and Actuators B: Chemical
• 出版年：31 March, 2014
• 年：2014
• 卷：193
• 期：Complete
• 页码：592-598
• 全文大小：1524 K

文摘

An inducible fluorescent ligand 2-(2-(2-aminoethylamino)ethyl)-3鈥?6鈥?bis(ethylamino)-2鈥?7鈥?dimethylspiro[isoindoline-1,9鈥?xanthen]-3-one was synthesized and used as a fluorescent probe to detect Se(IV). Se(IV) induced the structural transformation of the fluorescent ligand, resulting in a sharp fluorescence emission in an ethanol system. The fluorescence intensity observed was directly proportional to the concentration of Se ions. The detection limit of Se(IV) was 2.8 脳 10^鈭? mol L^鈭? under optimized conditions. The Se(IV) concentrations in four multivitamins were determined, and have obtained a tiny deviation of 2% compared with the result detected by ICP-AES. The recovery of Se(IV) in four samples ranged from 98% to 103%.