Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode

Stacy A. O’Reilly; Sylvia Daunert; Leonidas G. Bachas

doi:10.1021/ac00013a018

Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode

Stacy A. O’Reilly, Sylvia Daunert, Leonidas G. Bachas

Research output: Contribution to journal › Article

36 Scopus citations

Abstract

Incorporation of dicyanocobalt(III) a,b,c,d,e,f,g-heptapropylcobyrinete in plasticized poly(vinyl chloride) membranes has resulted in the development of electrodes that are selective for nitrite. An NO_x gas sensor was prepared by placing this electrode behind a microporous gas-permeable membrane. NO_x is generated in the sample at pH 1.7 and, after crossing the gas-permeable membrane, is trapped as nitrite by an internal solution buffered at pH ≥ 5.5. This sensor is different from the conventional Severlnghaus-type sensor, which employs a flat-bottom pH electrode. The latter senses changes in the pH of an internal unbuffered solution as NO_x diffuses across the gas-permeable membrane. The Severinghaus-type sensor exhibits severe interferences from weak lipophilic acids that can cross the gas-permeable membrane and affect the pH of the internal solution. The described NO_x sensor does not suffer from such interferences and exhibits better detection limits.

Original language	English (US)
Pages (from-to)	1278-1281
Number of pages	4
Journal	Analytical Chemistry
Volume	63
Issue number	13
DOIs	https://doi.org/10.1021/ac00013a018
State	Published - Jul 1 1991

ASJC Scopus subject areas

Analytical Chemistry

Access to Document

10.1021/ac00013a018

Fingerprint Dive into the research topics of 'Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode'. Together they form a unique fingerprint.

Cite this

O’Reilly, S. A., Daunert, S., & Bachas, L. G. (1991). Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode. Analytical Chemistry, 63(13), 1278-1281. https://doi.org/10.1021/ac00013a018

@article{c974872f368b4ec0bf2a7fb6ce5ded01,

title = "Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode",

abstract = "Incorporation of dicyanocobalt(III) a,b,c,d,e,f,g-heptapropylcobyrinete in plasticized poly(vinyl chloride) membranes has resulted in the development of electrodes that are selective for nitrite. An NOx gas sensor was prepared by placing this electrode behind a microporous gas-permeable membrane. NOx is generated in the sample at pH 1.7 and, after crossing the gas-permeable membrane, is trapped as nitrite by an internal solution buffered at pH ≥ 5.5. This sensor is different from the conventional Severlnghaus-type sensor, which employs a flat-bottom pH electrode. The latter senses changes in the pH of an internal unbuffered solution as NOx diffuses across the gas-permeable membrane. The Severinghaus-type sensor exhibits severe interferences from weak lipophilic acids that can cross the gas-permeable membrane and affect the pH of the internal solution. The described NOx sensor does not suffer from such interferences and exhibits better detection limits.",

author = "O{\textquoteright}Reilly, {Stacy A.} and Sylvia Daunert and Bachas, {Leonidas G.}",

year = "1991",

month = jul,

day = "1",

doi = "10.1021/ac00013a018",

language = "English (US)",

volume = "63",

pages = "1278--1281",

journal = "Analytical Chemistry",

issn = "0003-2700",

publisher = "American Chemical Society",

number = "13",

}

TY - JOUR

T1 - Nitrogen Oxide Gas Sensor Based on a Nitrite-Selective Electrode

AU - O’Reilly, Stacy A.

AU - Daunert, Sylvia

AU - Bachas, Leonidas G.

PY - 1991/7/1

Y1 - 1991/7/1

N2 - Incorporation of dicyanocobalt(III) a,b,c,d,e,f,g-heptapropylcobyrinete in plasticized poly(vinyl chloride) membranes has resulted in the development of electrodes that are selective for nitrite. An NOx gas sensor was prepared by placing this electrode behind a microporous gas-permeable membrane. NOx is generated in the sample at pH 1.7 and, after crossing the gas-permeable membrane, is trapped as nitrite by an internal solution buffered at pH ≥ 5.5. This sensor is different from the conventional Severlnghaus-type sensor, which employs a flat-bottom pH electrode. The latter senses changes in the pH of an internal unbuffered solution as NOx diffuses across the gas-permeable membrane. The Severinghaus-type sensor exhibits severe interferences from weak lipophilic acids that can cross the gas-permeable membrane and affect the pH of the internal solution. The described NOx sensor does not suffer from such interferences and exhibits better detection limits.

AB - Incorporation of dicyanocobalt(III) a,b,c,d,e,f,g-heptapropylcobyrinete in plasticized poly(vinyl chloride) membranes has resulted in the development of electrodes that are selective for nitrite. An NOx gas sensor was prepared by placing this electrode behind a microporous gas-permeable membrane. NOx is generated in the sample at pH 1.7 and, after crossing the gas-permeable membrane, is trapped as nitrite by an internal solution buffered at pH ≥ 5.5. This sensor is different from the conventional Severlnghaus-type sensor, which employs a flat-bottom pH electrode. The latter senses changes in the pH of an internal unbuffered solution as NOx diffuses across the gas-permeable membrane. The Severinghaus-type sensor exhibits severe interferences from weak lipophilic acids that can cross the gas-permeable membrane and affect the pH of the internal solution. The described NOx sensor does not suffer from such interferences and exhibits better detection limits.

UR - http://www.scopus.com/inward/record.url?scp=0001419226&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001419226&partnerID=8YFLogxK

U2 - 10.1021/ac00013a018

DO - 10.1021/ac00013a018

M3 - Article

AN - SCOPUS:0001419226

VL - 63

SP - 1278

EP - 1281

JO - Analytical Chemistry

JF - Analytical Chemistry

SN - 0003-2700

IS - 13

ER -