Covalently Anchored p-Aminobenzene Sulfonate Multilayer on a Graphite Pencil Lead Electrode: A Highly Selective Electrochemical Sensor for Dopamine

doi:10.1002/elan.201600627

	Covalently Anchored p-Aminobenzene Sulfonate Multilayer on a Graphite Pencil Lead Electrode: A Highly Selective Electrochemical Sensor for Dopamine
	Devaramani, Samrat 1,2; Sreeramareddygari, Muralikrishna 1; Reddy, M. Radhakrishna 3; Thippeswamy, Ramakrishnappa 3
	2017-05
发表期刊	ELECTROANALYSIS
ISSN	1040-0397
卷号	29 期号:5 页码:1410-1417
摘要	An electrochemical sensor for dopamine (DA) has been developed based on the electrografting of 4-aminobenzene sulfonic acid (4-ABSA) onto the graphite pencil lead electrode (GPLE). The process of covalent anchoring and presence of 4-ABSA on the GPLE was studied using cyclic voltammetry and electrochemical impedance spectroscopy. Electrochemical behaviour of the sensor towards DA, ascorbic acid (AA), and uric acid (UA) was studied in detail in phosphate buffer of pH 7. After optimizing the various parameters that influence the differential pulse voltammetric (DPV) signal for DA, the sensor exhibited a linear response over the 0.5 - 10 molL(-1)concentration range with a limit of detection, 0.095 molL(-1) (at an S/N of 3). The sensor can selectively quantify DA even in the presence of 1 mmolL(-1) AA. Distinct DPV signals were obtained for DA (at 0.191 mV vs. Ag/AgCl) and for UA (at 0.343 mV vs. Ag/AgCl). The sensor is highly selective, sensitive and stable. It was applied to the quantification of DA in injections and urine. Recovery studies were done by spiking both the real samples with a known quantity of DA.
关键词	4-Amino benzene sulphonic acid multilayer dopamine impedance DPV
DOI	10.1002/elan.201600627
收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Electrochemistry
WOS类目	Chemistry, Analytical ; Electrochemistry
WOS记录号	WOS:000401430700025
出版者	WILEY-V C H VERLAG GMBH
原始文献类型	Article
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.nwnu.edu.cn/handle/39RV6HYL/35117
专题	科研机构_甘肃省生物电化学与环境分析重点实验室
通讯作者	Thippeswamy, Ramakrishnappa
作者单位	1.Jain Univ, Ctr Nano & Mat Sci, Jakkasandra 562112, Karnataka, India; 2.Northwest Normal Univ, Key Lab Bioelectrochem & Environm Anal Gansu Prov, Lanzhou, Gansu, Peoples R China; 3.Dayananda Sagar Acad Technol & Management, Opp Art Living,Kanakapura Rd, Bangalore 560082, Karnataka, India
第一作者单位	甘肃省生物电化学与环境分析重点实验室
推荐引用方式 GB/T 7714	Devaramani, Samrat,Sreeramareddygari, Muralikrishna,Reddy, M. Radhakrishna,et al. Covalently Anchored p-Aminobenzene Sulfonate Multilayer on a Graphite Pencil Lead Electrode: A Highly Selective Electrochemical Sensor for Dopamine[J]. ELECTROANALYSIS,2017,29(5):1410-1417.
APA	Devaramani, Samrat,Sreeramareddygari, Muralikrishna,Reddy, M. Radhakrishna,&Thippeswamy, Ramakrishnappa.(2017).Covalently Anchored p-Aminobenzene Sulfonate Multilayer on a Graphite Pencil Lead Electrode: A Highly Selective Electrochemical Sensor for Dopamine.ELECTROANALYSIS,29(5),1410-1417.
MLA	Devaramani, Samrat,et al."Covalently Anchored p-Aminobenzene Sulfonate Multilayer on a Graphite Pencil Lead Electrode: A Highly Selective Electrochemical Sensor for Dopamine".ELECTROANALYSIS 29.5(2017):1410-1417.

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