Sequential flow-injection determinations of calcium and magnesium in waters

J. Alonso; J. Bartroli; J. L.F.C. Lima; A. A.S.C. Machado

doi:10.1016/S0003-2670(00)84500-6

Sequential flow-injection determinations of calcium and magnesium in waters

J. Alonso, J. Bartroli, J. L.F.C. Lima, A. A.S.C. Machado

Department of Chemistry

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

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Abstract

A tubular PVC membrane electrode for calcium without inner reference solution and a device for location of the reference electrode are described. In the flow-injection system, calcium is determined potentiometrically and then magnesium is determined by atomic absorption spectrometry. The electrode provides linear response to calcium in the range 5 × 10-5/2-10-1 M. On-line dilution of the sample allows magnesium determination in the range 0/2-10 mg l-. Flow rates between 3 and 6 ml min-1 are possible. The sampling frequency is 60/2-90 h-1. © 1986.

Original language	English
Pages (from-to)	503-508
Journal	Analytica Chimica Acta
Volume	179
Issue number	C
DOIs	https://doi.org/10.1016/S0003-2670(00)84500-6
Publication status	Published - 1 Jan 1986

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title = "Sequential flow-injection determinations of calcium and magnesium in waters",

abstract = "A tubular PVC membrane electrode for calcium without inner reference solution and a device for location of the reference electrode are described. In the flow-injection system, calcium is determined potentiometrically and then magnesium is determined by atomic absorption spectrometry. The electrode provides linear response to calcium in the range 5 × 10-5/2-10-1 M. On-line dilution of the sample allows magnesium determination in the range 0/2-10 mg l-. Flow rates between 3 and 6 ml min-1 are possible. The sampling frequency is 60/2-90 h-1. {\textcopyright} 1986.",

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AB - A tubular PVC membrane electrode for calcium without inner reference solution and a device for location of the reference electrode are described. In the flow-injection system, calcium is determined potentiometrically and then magnesium is determined by atomic absorption spectrometry. The electrode provides linear response to calcium in the range 5 × 10-5/2-10-1 M. On-line dilution of the sample allows magnesium determination in the range 0/2-10 mg l-. Flow rates between 3 and 6 ml min-1 are possible. The sampling frequency is 60/2-90 h-1. © 1986.

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DO - 10.1016/S0003-2670(00)84500-6

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