Issue 4, 2001

Determination of manganese in water samples by flame atomic absorption spectrometry after cloud point extraction

Abstract

Cloud point extraction has been used for the preconcentration of manganese, after the formation of a complex with 1-(2-thiazolylazo)-2-naphthol (TAN), and later analysis by flame atomic absorption spectrometry using octylphenoxypolyethoxyethanol (Triton X-114) as surfactant. The chemical variables affecting the separation phase and the viscosity affecting the detection process were optimized. Under the optimum conditions (i.e., pH = 9.2, [TAN] = 2.0 × 10−5 mol l−1, [Triton X-114] = 0.05%, added methanol volume = 0.2 ml), preconcentration of 50 ml of sample solution permitted the detection of 0.28 ppb for manganese. The enhancement factor was 57.6. The proposed method has been applied to the determination of manganese in water samples.

Article information

Article type
Paper
Submitted
30 Oct 2000
Accepted
31 Jan 2001
First published
07 Mar 2001

Analyst, 2001,126, 534-537

Determination of manganese in water samples by flame atomic absorption spectrometry after cloud point extraction

K. C. Teo and J. Chen, Analyst, 2001, 126, 534 DOI: 10.1039/B008717N

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