Fabrication of a fluorescent nanoprobe for determination of sulfadiazine after its dispersive solid-phase extraction using magnetic nanocomposite sorbent

被引:5
作者
Soltani, Maryam Dehghani [1 ]
Dadfarnia, Shayessteh [1 ]
Shabani, Ali Mohammad Haji [1 ]
Afsharipour, Roya [1 ]
机构
[1] Yazd Univ, Fac Sci, Dept Chem, Yazd 89195741, Iran
关键词
Sulfadiazine; Fluorescent nanoprobe; Dispersive solid-phase extraction; Ag2S quantum dots; Nanocomposite; AG2S QUANTUM DOTS; LIQUID-CHROMATOGRAPHY; GRAPHENE OXIDE; SULFONAMIDES; WATER; MICROEXTRACTION; COMPOSITES;
D O I
10.1016/j.microc.2023.108642
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A sensitive and non-toxic fluorescent nanoprobe has been designed for the determination of sulfadiazine. Sul-fadiazine was separated and preconcentrated by dispersive solid-phase extraction based on the magnetic nanocomposite sorbent of oxidized nanocellulose/polyethyleneimine/nitrogen graphene quantum dots. The quantification of sulfadiazine was based on the decrease in the fluorescence of Ag2S@L-cysteine quantum dots. In optimal conditions, the fluorescence of Ag2S@L-cysteine quantum dots linearly decreases with the increase of sulfadiazine concentration within the range of 2.0-40.0 & mu;g L-1. A limit of detection (LOD) of 0.41 & mu;g L-1 and intra-and inter-day precision of 2.1%, and 4.3%, respectively, at the sulfadiazine concentration of 8.0 & mu;g L-1 (RSD%, n = 7) were obtained. The maximum sorption capacity of the magnetic nanocomposite sorbent for sulfadiazine was found to be 39.0 mg g-1. The proposed procedure was successfully used to extract and quantify sulfadiazine from a variety of samples.
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页数:10
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