A novel ferroin membrane sensor for potentiometric determination of iron

Saad S.M. Hassan; Sayed A.M. Marzouk

doi:10.1016/0039-9140(94)E0042-P

A novel ferroin membrane sensor for potentiometric determination of iron

Saad S.M. Hassan, Sayed A.M. Marzouk

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

80 Citations (Scopus)

Abstract

A novel potentiometric approach for both batch and flow injection determination of iron(II) and/or iron(III) is described. It is based on the formation and monitoring of ferroin with a PVC membrane sensor containing ferroin-TPB as an electroactive component plasticized with 2-nitrophenyl phenyl ether. The sensor exhibits fast Nernstian response for ferroin with a cationic calibration slope of 30 ± 0.2 mV/concentration decade down to 4 × 10^-7M ferroin (0.03 ppm Fe) at pH 3-9. Interferences from common inorganic cations are negligible or can be eliminated by a pretreatment with DDC. The ferroin sensor was successfully applied to the determination of iron contents in water, alloys, rocks and pharmaceuticals. The results show good correlation with data obtained by the standard spectrophotometric ferroin method, the coefficient of correlation is better than 0.7%.

Original language	English
Pages (from-to)	891-899
Number of pages	9
Journal	Talanta
Volume	41
Issue number	6
DOIs	https://doi.org/10.1016/0039-9140(94)E0042-P
Publication status	Published - Jun 1994
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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10.1016/0039-9140(94)E0042-P

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title = "A novel ferroin membrane sensor for potentiometric determination of iron",

abstract = "A novel potentiometric approach for both batch and flow injection determination of iron(II) and/or iron(III) is described. It is based on the formation and monitoring of ferroin with a PVC membrane sensor containing ferroin-TPB as an electroactive component plasticized with 2-nitrophenyl phenyl ether. The sensor exhibits fast Nernstian response for ferroin with a cationic calibration slope of 30 ± 0.2 mV/concentration decade down to 4 × 10-7M ferroin (0.03 ppm Fe) at pH 3-9. Interferences from common inorganic cations are negligible or can be eliminated by a pretreatment with DDC. The ferroin sensor was successfully applied to the determination of iron contents in water, alloys, rocks and pharmaceuticals. The results show good correlation with data obtained by the standard spectrophotometric ferroin method, the coefficient of correlation is better than 0.7%.",

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AU - Hassan, Saad S.M.

AU - Marzouk, Sayed A.M.

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N2 - A novel potentiometric approach for both batch and flow injection determination of iron(II) and/or iron(III) is described. It is based on the formation and monitoring of ferroin with a PVC membrane sensor containing ferroin-TPB as an electroactive component plasticized with 2-nitrophenyl phenyl ether. The sensor exhibits fast Nernstian response for ferroin with a cationic calibration slope of 30 ± 0.2 mV/concentration decade down to 4 × 10-7M ferroin (0.03 ppm Fe) at pH 3-9. Interferences from common inorganic cations are negligible or can be eliminated by a pretreatment with DDC. The ferroin sensor was successfully applied to the determination of iron contents in water, alloys, rocks and pharmaceuticals. The results show good correlation with data obtained by the standard spectrophotometric ferroin method, the coefficient of correlation is better than 0.7%.

AB - A novel potentiometric approach for both batch and flow injection determination of iron(II) and/or iron(III) is described. It is based on the formation and monitoring of ferroin with a PVC membrane sensor containing ferroin-TPB as an electroactive component plasticized with 2-nitrophenyl phenyl ether. The sensor exhibits fast Nernstian response for ferroin with a cationic calibration slope of 30 ± 0.2 mV/concentration decade down to 4 × 10-7M ferroin (0.03 ppm Fe) at pH 3-9. Interferences from common inorganic cations are negligible or can be eliminated by a pretreatment with DDC. The ferroin sensor was successfully applied to the determination of iron contents in water, alloys, rocks and pharmaceuticals. The results show good correlation with data obtained by the standard spectrophotometric ferroin method, the coefficient of correlation is better than 0.7%.

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A novel ferroin membrane sensor for potentiometric determination of iron

Abstract

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