摘要
采用线性扫描极谱法,利用呋喃西林(NF)在pH=2.70的B-R缓冲溶液中,于起始电位-0.666V(vs.SCE),以900mV/s扫描,在峰电位-0.970V(vs.SCE)处可以产生一个灵敏的还原峰,且该峰峰电流的大小与呋喃西林浓度呈正比关系,据此建立了检测呋喃西林的极谱分析新方法。在最优条件下,呋喃西林的线性检测范围为0.02~6.00μg/mL,检出限为0.0013μg/mL。该方法可直接用于环境养殖水样中呋喃西林的检测,回收率为95.71%~107.20%。初步讨论了电极反应机理。
A new method for the determination of nitrofurazone(NF)has been established by using linear scanning polarography.The starting potential is-0.666 V(vs.SCE)and a peak potential is-0.970 V(vs.SCE).And the peak current was linearly related to the concentration of nitrofurazone.Under optimized conditions,the detection range of nitrofurazone was 0.02-6.00μg/mL,and the detection limit was 0.0013μg/mL.The method has been applied to the detection of nitrofurazone in aqueous environmental samples and the recovery of samples is from 95.71%to 107.20%.The electrochemical behavior of nitrofurazone was studied,and the mechanism of the electrode reaction is preliminarily discussed.
作者
陈春香
陈文
熊旭尧
CHEN Chun-xiang;CHEN Wen;XIONG Xu-yao(College of Materials and Chemistry&Chemical Engineering,Chengdu University of Technology,Chengdu610059;Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institution,Chengdu610059)
出处
《分析科学学报》
CAS
CSCD
北大核心
2019年第3期317-321,共5页
Journal of Analytical Science
关键词
硝基呋喃
呋喃西林
极谱法
Nitrofuran
Nitrofurazone
Polarography
