A high-sensitive sensor with HEPES-enhanced electrochemiluminescence of benzo[3]uril for Fe and its application in human serum

An electrochemiluminescence (ECL) sensor based on a benzo[3]uril-modified glassy carbon electrode with sensitized luminescence, with the coexistence of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) as the coreactant, was successfully constructed. The sensitization mechanism was proposed...

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Published in:Analyst (London) 2020-03, Vol.145 (5), p.181-1816
Main Authors: Lei, Yao, Qiu, Fei, Jin, Xian-Yi, Yang, Jian-Mei, Liu, Mao, Ge, Qing-Mei, Cong, Hang, Tao, Zhu
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container_title Analyst (London)
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Qiu, Fei
Jin, Xian-Yi
Yang, Jian-Mei
Liu, Mao
Ge, Qing-Mei
Cong, Hang
Tao, Zhu
description An electrochemiluminescence (ECL) sensor based on a benzo[3]uril-modified glassy carbon electrode with sensitized luminescence, with the coexistence of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) as the coreactant, was successfully constructed. The sensitization mechanism was proposed by analyzing the results of the control experiments for establishing the relationship of the luminescence effect with the concentration of HEPES. Under the optimized conditions, the fabricated sensor system was applied for the detection of Fe 3+ in an aqueous solution with good sensitivity and selectivity. A low detection limit of 0.41 nM was achieved, indicating superior sensor performance over the previous analytical methods. The ECL sensor system was employed for the detection of Fe 3+ in human serum samples to produce excellent recoveries ranging from 96.17% to 101.81%. An electrochemiluminescence sensor of benzo[3]uril with sensitization of HEPES was fabricated and applied for the detection of Fe 3+ with high sensitivity and selectivity in human serum.
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title A high-sensitive sensor with HEPES-enhanced electrochemiluminescence of benzo[3]uril for Fe and its application in human serum
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