Determination of aluminum ions by indirect potentiometry in a flow system

J. Catherine Ngila; Peter W. Alexander; D. Brynn Hibbert

doi:10.1002/elan.1140061112

Determination of aluminum ions by indirect potentiometry in a flow system

J. Catherine Ngila, Peter W. Alexander, D. Brynn Hibbert

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

4 Citations (Scopus)

Abstract

A potentiometric system is described for the indirect flow determination of Al³⁺ with an aluminum wire as indicator electrode. The method is based on the reaction between aluminum and fluoride ions at pH 5.0 in acetate buffer. The reduction in activity of fluoride ions is detected by the aluminum electrode. The response was optimized for the flow rate of solution, length of reaction tubing, concentration of fluoride reagent, and pH of the buffer. The response was linear with concentration of aluminum in the range of 0.5 to 50 ppm with a relative standard deviation (RSD) of 0.7%. There was negligible interference from a range of cations and anions when their concentrations were less than 20 ppm.

Original language	English
Pages (from-to)	990-995
Number of pages	6
Journal	Electroanalysis
Volume	6
Issue number	11-12
DOIs	https://doi.org/10.1002/elan.1140061112
Publication status	Published - 1994
Externally published	Yes

Keywords

Aluminum determination
Aluminum wire
Flow analysis
Indirect determination

ASJC Scopus subject areas

Analytical Chemistry
Electrochemistry

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10.1002/elan.1140061112

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title = "Determination of aluminum ions by indirect potentiometry in a flow system",

abstract = "A potentiometric system is described for the indirect flow determination of Al3+ with an aluminum wire as indicator electrode. The method is based on the reaction between aluminum and fluoride ions at pH 5.0 in acetate buffer. The reduction in activity of fluoride ions is detected by the aluminum electrode. The response was optimized for the flow rate of solution, length of reaction tubing, concentration of fluoride reagent, and pH of the buffer. The response was linear with concentration of aluminum in the range of 0.5 to 50 ppm with a relative standard deviation (RSD) of 0.7%. There was negligible interference from a range of cations and anions when their concentrations were less than 20 ppm.",

keywords = "Aluminum determination, Aluminum wire, Flow analysis, Indirect determination",

author = "Ngila, {J. Catherine} and Alexander, {Peter W.} and Hibbert, {D. Brynn}",

year = "1994",

doi = "10.1002/elan.1140061112",

language = "English",

volume = "6",

pages = "990--995",

journal = "Electroanalysis",

issn = "1040-0397",

publisher = "Wiley-VCH Verlag",

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TY - JOUR

T1 - Determination of aluminum ions by indirect potentiometry in a flow system

AU - Ngila, J. Catherine

AU - Alexander, Peter W.

AU - Hibbert, D. Brynn

PY - 1994

Y1 - 1994

N2 - A potentiometric system is described for the indirect flow determination of Al3+ with an aluminum wire as indicator electrode. The method is based on the reaction between aluminum and fluoride ions at pH 5.0 in acetate buffer. The reduction in activity of fluoride ions is detected by the aluminum electrode. The response was optimized for the flow rate of solution, length of reaction tubing, concentration of fluoride reagent, and pH of the buffer. The response was linear with concentration of aluminum in the range of 0.5 to 50 ppm with a relative standard deviation (RSD) of 0.7%. There was negligible interference from a range of cations and anions when their concentrations were less than 20 ppm.

AB - A potentiometric system is described for the indirect flow determination of Al3+ with an aluminum wire as indicator electrode. The method is based on the reaction between aluminum and fluoride ions at pH 5.0 in acetate buffer. The reduction in activity of fluoride ions is detected by the aluminum electrode. The response was optimized for the flow rate of solution, length of reaction tubing, concentration of fluoride reagent, and pH of the buffer. The response was linear with concentration of aluminum in the range of 0.5 to 50 ppm with a relative standard deviation (RSD) of 0.7%. There was negligible interference from a range of cations and anions when their concentrations were less than 20 ppm.

KW - Aluminum determination

KW - Aluminum wire

KW - Flow analysis

KW - Indirect determination

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U2 - 10.1002/elan.1140061112

DO - 10.1002/elan.1140061112

M3 - Article

AN - SCOPUS:84987505809

SN - 1040-0397

VL - 6

SP - 990

EP - 995

JO - Electroanalysis

JF - Electroanalysis

IS - 11-12

ER -

Determination of aluminum ions by indirect potentiometry in a flow system

Abstract

Keywords

ASJC Scopus subject areas

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