Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode

Selvakumar Palanisamy; Chelladurai Karuppiah; Shen Ming Chen; Prakash Periakaruppan

doi:10.1016/j.jelechem.2014.05.025

Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode

Selvakumar Palanisamy
, Chelladurai Karuppiah
, Shen Ming Chen
, Prakash Periakaruppan

Department of Chemical Engineering and Biotechnology

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

A novel and sensitive amperometric nitrite sensor has been developed using electrochemically activated graphite (EAG) modified screen printed carbon electrode (SPCE) for the first time. The enhanced oxidation peak current (I _pa) with lower oxidation overpotential (E_pa) of nitrite is observed at EAG modified SPCE than that of electrochemically activated SPCE and graphite/SPCE. Under optimum conditions, the linear response of nitrite is found from 0.1 μM to 16.4 mM with a lower limit of detection of 38 nM. The sensitivity is calculated as 0.126 μA μM^-1 cm^-2. The EAG modified SPCE exhibits its high selectivity in the presence of common ions and biological co-active interfering species. In addition, the fabricated nitrite sensor shows a good repeatability, reproducibility and long term stability along with excellent practicality.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	727
DOIs	https://doi.org/10.1016/j.jelechem.2014.05.025
State	Published - 1 Aug 2014

Bibliographical note

Funding Information:
This project was supported by the National Science Council and the Ministry of Education of Taiwan (Republic of China) .

Keywords

Amperometry
Electrocatalysis
Electrochemically activated graphite
Nitrite
Screen printed carbon electrode

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10.1016/j.jelechem.2014.05.025

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title = "Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode",

abstract = "A novel and sensitive amperometric nitrite sensor has been developed using electrochemically activated graphite (EAG) modified screen printed carbon electrode (SPCE) for the first time. The enhanced oxidation peak current (I pa) with lower oxidation overpotential (Epa) of nitrite is observed at EAG modified SPCE than that of electrochemically activated SPCE and graphite/SPCE. Under optimum conditions, the linear response of nitrite is found from 0.1 μM to 16.4 mM with a lower limit of detection of 38 nM. The sensitivity is calculated as 0.126 μA μM-1 cm-2. The EAG modified SPCE exhibits its high selectivity in the presence of common ions and biological co-active interfering species. In addition, the fabricated nitrite sensor shows a good repeatability, reproducibility and long term stability along with excellent practicality.",

keywords = "Amperometry, Electrocatalysis, Electrochemically activated graphite, Nitrite, Screen printed carbon electrode",

author = "Selvakumar Palanisamy and Chelladurai Karuppiah and Chen, \{Shen Ming\} and Prakash Periakaruppan",

note = "Funding Information: This project was supported by the National Science Council and the Ministry of Education of Taiwan (Republic of China) .",

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T1 - Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode

AU - Palanisamy, Selvakumar

AU - Karuppiah, Chelladurai

AU - Chen, Shen Ming

AU - Periakaruppan, Prakash

N1 - Funding Information: This project was supported by the National Science Council and the Ministry of Education of Taiwan (Republic of China) .

PY - 2014/8/1

Y1 - 2014/8/1

N2 - A novel and sensitive amperometric nitrite sensor has been developed using electrochemically activated graphite (EAG) modified screen printed carbon electrode (SPCE) for the first time. The enhanced oxidation peak current (I pa) with lower oxidation overpotential (Epa) of nitrite is observed at EAG modified SPCE than that of electrochemically activated SPCE and graphite/SPCE. Under optimum conditions, the linear response of nitrite is found from 0.1 μM to 16.4 mM with a lower limit of detection of 38 nM. The sensitivity is calculated as 0.126 μA μM-1 cm-2. The EAG modified SPCE exhibits its high selectivity in the presence of common ions and biological co-active interfering species. In addition, the fabricated nitrite sensor shows a good repeatability, reproducibility and long term stability along with excellent practicality.

AB - A novel and sensitive amperometric nitrite sensor has been developed using electrochemically activated graphite (EAG) modified screen printed carbon electrode (SPCE) for the first time. The enhanced oxidation peak current (I pa) with lower oxidation overpotential (Epa) of nitrite is observed at EAG modified SPCE than that of electrochemically activated SPCE and graphite/SPCE. Under optimum conditions, the linear response of nitrite is found from 0.1 μM to 16.4 mM with a lower limit of detection of 38 nM. The sensitivity is calculated as 0.126 μA μM-1 cm-2. The EAG modified SPCE exhibits its high selectivity in the presence of common ions and biological co-active interfering species. In addition, the fabricated nitrite sensor shows a good repeatability, reproducibility and long term stability along with excellent practicality.

KW - Amperometry

KW - Electrocatalysis

KW - Electrochemically activated graphite

KW - Nitrite

KW - Screen printed carbon electrode

UR - https://www.scopus.com/pages/publications/84902688820

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DO - 10.1016/j.jelechem.2014.05.025

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AN - SCOPUS:84902688820

SN - 1572-6657

VL - 727

SP - 34

EP - 38

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode

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