A lysozyme-stabilized silver nanocluster fluorescent probe for the detection of sulfide ions

被引：28
|
作者：
Sun, Haiyun [1 ]
Lu, Dongtao [1 ]
Xian, Ming [1 ,2 ]
Dong, Chuan [1 ]
Shuang, Shaomin [1 ]
机构：
[1] Shanxi Univ, Inst Environm Sci, Dept Chem & Chem Engn, Taiyuan 030006, Peoples R China
[2] Washington State Univ, Dept Chem, Pullman, WA 99164 USA
来源：
ANALYTICAL METHODS | 2016年 / 8卷 / 22期
基金：
中国国家自然科学基金;
关键词：
SENSITIVE DETECTION; HYDROGEN-SULFIDE; AQUEOUS-SOLUTION; SENSOR; COPPER; ANION;
D O I：
10.1039/c6ay00300a
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Red-emitting lysozyme-stabilized silver nanoclusters (Lys-Ag NCs) were synthesized and utilized as a fluorescent probe for sensing sulfide ions (S2-) based on fluorescence quenching. Hence a new method for the detection of S2- was developed. Under optimized experimental conditions, the probe exhibited a stable response for S2- over a concentration range from 5.0 x 10(-6) M to 1.0 x 10(-4) M with a detection limit of 1.1 x 10(-6) M. The feasibility of the proposed method was further demonstrated through the detection of S2- in real samples. The results showed satisfactory recoveries in the range of 97.0-101.4%. Meanwhile, the possible sensing mechanism for the detection of S2- was also discussed. The proposed method for the detection of S2- has potential application in the environmental pollutant analysis.
引用
收藏
页码：4328 / 4333
页数：6
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