• 文献标题:   Development of a selective graphene quantum dots based electrochemical sensor for the determination of estrone in different water matrices and synthetic urine
  • 文献类型:   Article, Early Access
  • 作  者:   DOS SANTOS JF, SILVA JDS, MACEDO JF, JUNIOR JCS, ALMEIDA WS, SUSSUCHI EM
  • 作者关键词:   electrochemical sensor, emerging contaminant, hormone
  • 出版物名称:   ELECTROANALYSIS
  • ISSN:   1040-0397 EI 1521-4109
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1002/elan.202200563 EA JUN 2023
  • 出版年:   2023

▎ 摘  要

Estrone (E1) is associated with various health and environmental issues, necessitating the development of analytical methods for monitoring E1 in different matrices. In this context, the present study reports the development of a graphene quantum dot-based electrode (GQD/E) to detect estrone in water and urine samples. Voltammetric measurements under optimized conditions demonstrated the feasibility of using GQD/E to detect estrone at trace levels in aqueous samples. Two linear dynamic ranges were obtained at concentrations from 0.05 to 10.00 mu mol L-1, with limit of detection (LOD) and quantification (LOQ) of 28.0 and 96.0 nmol L-1, respectively. Furthermore, the LOD value obtained in this study is one of the lowest ever reported in the literature for the electrochemical determination of E1. The method response showed no significant variation in the current intensity of E1 in the presence of the 16 interferents. The recovery values obtained by using GQD/E to quantify estrone in fortified samples of seawater, tap water, wastewater and synthetic urine ranged from 95.9 to 108.1 %, indicating that the method presents highly sensitive for detecting estrone in aqueous matrices.