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Rauret G, Pineda L, Compaño R. Solvent extraction of lead(II) with N-cyclohexyl-N-nitrosohydroxylamine into methyl isobutyl ketone. Talanta. 1989;36(6):701-3doi: 10.1016/0039-9140(89)80271-1.
Rauret, G., Pineda, L., & Compaño, R. (1989). Solvent extraction of lead(II) with N-cyclohexyl-N-nitrosohydroxylamine into methyl isobutyl ketone. Talanta, 36(6), 701-3. https://doi.org/10.1016/0039-9140(89)80271-1
Rauret, G, et al. "Solvent extraction of lead(II) with N-cyclohexyl-N-nitrosohydroxylamine into methyl isobutyl ketone." Talanta vol. 36,6 (1989): 701-3. doi: https://doi.org/10.1016/0039-9140(89)80271-1
Rauret G, Pineda L, Compaño R. Solvent extraction of lead(II) with N-cyclohexyl-N-nitrosohydroxylamine into methyl isobutyl ketone. Talanta. 1989 Jun;36(6):701-3. doi: 10.1016/0039-9140(89)80271-1. PMID: 18964788.
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Talanta. 1989 Jun;36(6):701-3. doi: 10.1016/0039-9140(89)80271-1.

Solvent extraction of lead(II) with N-cyclohexyl-N-nitrosohydroxylamine into methyl isobutyl ketone.

Talanta

G Rauret, L Pineda, R Compaño

Affiliations

  1. Department of Analytical Chemistry, University of Barcelona, Barcelona, Spain.

PMID: 18964788 DOI: 10.1016/0039-9140(89)80271-1

Abstract

The distribution equilibrium of the lead-cnha complex in the water-methyl isobutyl ketone (MIBK) system has been studied at 25 degrees . From graphical treatment of the equilibrium data, it was deduced that PbL(2) is the complex extracted. By use of the program LETAGROP-DISTR, values for the distribution and the stability constants of PbL(2) have been calculated: log K(DC) = 1.84 +/- 0.11; log beta(1) = 6.68 +/- 0.09 and log beta(2) = 10.28 +/- 0.09. On the basis of these results and those of previous studies, a method for determination of lead(II), copper(II) and cadmium(II) by atomic-absorption spectrometry, after extraction with cnha and 4-methylpyridine into MIBK, is proposed.

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