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Quantitative aspects of the separation of arsenical species by free solution capillary electrophoresis

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Abstract

Capillary zone electrophoresis has been used for the separation of arsenite, arsenate, monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) and phenylarsonic acid. The separation was achieved using a fused silica capillary filled with a phosphate buffer. The on-column U.V. detector was operated at 190 nm. The influence of voltage and injected volume, reproducibility of calibration and recovery from a drinking water sample were studied. Using the calibration plot method and phenylarsonic acid as internal standard the mean recoveries for arsenate, MMA and DMA were 104%, 97% and 97% respectively.

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Authors and Affiliations

  1. Department de Química Analítica, Universitat de Barcelona, Av. Diagonal 647, E-08028, Barcelona, Spain

    J. F. López-Sánchez & G. Rauret

  2. Laboratoire de Chimie Minérale et Analitique, URA 405 du CNRS, EHICS, 1, rue Blaise Pascal, F-67008, Strasbourg Cedex, France

    M. B. Amram, M. D. Lakkis, F. Lagarde & M. J. F. Leroy

Authors
  1. J. F. López-Sánchez
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  2. M. B. Amram
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  3. M. D. Lakkis
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  4. F. Lagarde
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  5. G. Rauret
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  6. M. J. F. Leroy
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López-Sánchez, J.F., Amram, M.B., Lakkis, M.D. et al. Quantitative aspects of the separation of arsenical species by free solution capillary electrophoresis. Z. Anal. Chem. 348, 810–814 (1994). https://doi.org/10.1007/BF01780982

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  • DOI: https://doi.org/10.1007/BF01780982

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