线性扫描极谱法检测环境水体中呋喃西林
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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 0.0013 μg/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.
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 0.0013 μg/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.
引文
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[3]Malisch R,Huber L.Journal of Liquid Chromatography,1988,11(13):2801.
[4]WU F Z,OUYANG L Q.Chinese Journal of Health Laboratory Technology(吴富忠,欧阳立群.中国卫生检验杂志),2006,16(7):812.
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[6]CHEN R Q.Fujian Journal of Agricultural Sciences(陈瑞清.福建农业学报),2007,22(1):68.
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[8]ZHANG L L,LI Z D.Strait Pharmaceutical Journal(张龙麟,李枝端.海峡药学),2001,13(3):53.
[9]Cooper K M,Samsonova J V,Plumpton L.Analytica Chimica Acta,2007,592(1):64.
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[11]Reday C S,Reddy S J.Electroanalysis,1992,4(5):595.
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[14]Trossini G H G.Journal of the Brazilian Chemical Society,2013,24(12):1964.
[15]Ye F,Huang J,Xu Y,et al.Analytical Letters,2017,51(5):728.
[16]ZHANG D Y,WU X H.Analytical Instrumentation(张达英,吴晓辉.分析仪器),1995,(4):42.
[17]LIN H.Journal of Yuxi Normal University(林洪.玉溪师范学院学报),2008,24(4):10.