Heavy metal ion detection on a microspot electrode using an optical electrochemical probe

Santanu Roy; Abhijeet Prasad; Rahul Tevatia; Ravi F. Saraf

doi:10.1016/j.elecom.2017.11.021

Heavy metal ion detection on a microspot electrode using an optical electrochemical probe

Santanu Roy, Abhijeet Prasad, Rahul Tevatia, Ravi F. Saraf

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

14 Scopus citations

Abstract

Electrochemical sensors can be used to create portable, attractive, high-sensitivity devices to detect heavy ions in water at a reasonable cost. A novel method of measuring local redox on an electrode using the differential reflectivity measured on an approximately 6 micron diameter spot using a He/Ne laser beam is described. Field focusing and electrode modification enhance the sensitivity, making the method ideal for miniaturization and multiplexing multiple analytes on a monolith electrode. The method is demonstrated by detecting Pb, Hg, and As ions at ppb and ppt levels.

Original language	English (US)
Pages (from-to)	94-98
Number of pages	5
Journal	Electrochemistry Communications
Volume	86
DOIs	https://doi.org/10.1016/j.elecom.2017.11.021
State	Published - Jan 2018

Keywords

Dielectrophoretic effect
Electro-optics
Electrochemical analysis
Electrode size
Heavy metals
Water pollution

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2017.11.021

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title = "Heavy metal ion detection on a microspot electrode using an optical electrochemical probe",

abstract = "Electrochemical sensors can be used to create portable, attractive, high-sensitivity devices to detect heavy ions in water at a reasonable cost. A novel method of measuring local redox on an electrode using the differential reflectivity measured on an approximately 6 micron diameter spot using a He/Ne laser beam is described. Field focusing and electrode modification enhance the sensitivity, making the method ideal for miniaturization and multiplexing multiple analytes on a monolith electrode. The method is demonstrated by detecting Pb, Hg, and As ions at ppb and ppt levels.",

keywords = "Dielectrophoretic effect, Electro-optics, Electrochemical analysis, Electrode size, Heavy metals, Water pollution",

author = "Santanu Roy and Abhijeet Prasad and Rahul Tevatia and Saraf, {Ravi F.}",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2018",

month = jan,

doi = "10.1016/j.elecom.2017.11.021",

language = "English (US)",

volume = "86",

pages = "94--98",

journal = "Electrochemistry Communications",

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T1 - Heavy metal ion detection on a microspot electrode using an optical electrochemical probe

AU - Roy, Santanu

AU - Prasad, Abhijeet

AU - Tevatia, Rahul

AU - Saraf, Ravi F.

PY - 2018/1

Y1 - 2018/1

N2 - Electrochemical sensors can be used to create portable, attractive, high-sensitivity devices to detect heavy ions in water at a reasonable cost. A novel method of measuring local redox on an electrode using the differential reflectivity measured on an approximately 6 micron diameter spot using a He/Ne laser beam is described. Field focusing and electrode modification enhance the sensitivity, making the method ideal for miniaturization and multiplexing multiple analytes on a monolith electrode. The method is demonstrated by detecting Pb, Hg, and As ions at ppb and ppt levels.

AB - Electrochemical sensors can be used to create portable, attractive, high-sensitivity devices to detect heavy ions in water at a reasonable cost. A novel method of measuring local redox on an electrode using the differential reflectivity measured on an approximately 6 micron diameter spot using a He/Ne laser beam is described. Field focusing and electrode modification enhance the sensitivity, making the method ideal for miniaturization and multiplexing multiple analytes on a monolith electrode. The method is demonstrated by detecting Pb, Hg, and As ions at ppb and ppt levels.

KW - Dielectrophoretic effect

KW - Electro-optics

KW - Electrochemical analysis

KW - Electrode size

KW - Heavy metals

KW - Water pollution

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U2 - 10.1016/j.elecom.2017.11.021

DO - 10.1016/j.elecom.2017.11.021

M3 - Article

AN - SCOPUS:85035793878

SN - 1388-2481

VL - 86

SP - 94

EP - 98

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Heavy metal ion detection on a microspot electrode using an optical electrochemical probe

Abstract

Keywords

ASJC Scopus subject areas

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