The selective detection of Fe3+ ions using citrate-capped gold nanoparticles

被引：1
|
作者：
Meng, Xinhua [1 ]
Lei, Bijing [1 ]
Qi, Na [1 ]
Wang, Bochu [1 ]
机构：
[1] Chongqing Univ, Key Lab Biorheol Sci & Technol, Coll Bioengn, Minist Educ, Chongqing 400030, Peoples R China
来源：
ANALYTICAL BIOCHEMISTRY | 2022年 / 637卷
基金：
中国国家自然科学基金;
关键词：
Fe3+ ions; Colorimetric sensor; Selective detection; Gold nanoparticles; LIQUID-CHROMATOGRAPHY; IRON; AGGREGATION; SENSOR; SERUM; SIZE;
D O I：
10.1016/j.ab.2021.114453
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Citrate is a ubiquitous biological molecule that functions as Fe3+ chelators in some bacteria and the blood plasma of humans. Inspired by the strong affinity between citrate and Fe3+, a colorimetric Fe3+ probe based on citratecapped AuNPs without any additional modification was designed. Citrate-capped AuNPs with a diameter of 22 nm were applied to detect Fe3+ without other reagents' assistance. This easily-prepared and low-cost colorimetric sensor exhibited good selectivity towards Fe3+ among common metal ions, a good linear relationship in the range of 0.1-0.8 mu M of Fe3+ and quick response time of 10 min.
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页数：5
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