Comparison of three sequential extraction procedures for fractionation of arsenic from highly polluted mining sediments

Analytical and Bioanalytical Chemistry
Raquel LariosI Rucandio

Abstract

Three sequential extraction procedures were evaluated for the study of fractionation of arsenic in environmental solid samples. The procedures considered were as follows: i) the standardized and widely recognised BCR procedure, conceived for the study of the partitioning of heavy metals; ii) the procedure developed by Manful, who adapted a phosphorus scheme for arsenic fractionation; and iii) a novel sequential extraction scheme especially devised for arsenic. The efficiency and suitability of these methods and the corresponding extraction steps for partitioning arsenic obtained from the most important solid forms were tested by application of the methods to real sediment samples heavily polluted by mining activity. Results showed the BCR scheme was inappropriate for arsenic fractionation. The procedure could, nevertheless, be a first approach for the assessment of arsenic partitioning, because its first extraction step can be regarded as adequate for the estimation of the most easily mobilizable arsenic. Although the Manful scheme results in a more differentiated arsenic pattern, some drawbacks arise from the lack of selectivity of some of the reagents used, for example overlapping of specific target phases, overestimation of ...Continue Reading

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Citations

Jul 9, 2013·Analytica Chimica Acta·Muhammad Babar JavedTariq Siddique
Apr 24, 2014·Environmental Monitoring and Assessment·James T MarkwieseRandall T Ryti
Oct 6, 2015·Journal of Hazardous Materials·Liying XuYongfeng Jia
Jul 1, 2015·Chemosphere·Erico T F FreitasVirginia S T Ciminelli
Dec 30, 2014·Environmental Science and Pollution Research International·Guanxing HuangYing Zhang
Sep 14, 2014·The Science of the Total Environment·Muhammad Babar JavedTariq Siddique
Oct 26, 2016·Environmental Science and Pollution Research International·Benjamin C MakiRuth M Sofield
Jul 12, 2017·The Science of the Total Environment·R C CagninA C Bastos
Feb 27, 2018·Environmental Science and Pollution Research International·Isabela C F VasquesWalter A P Abrahão
Dec 5, 2018·Journal of Environmental Quality·Isabela C F VasquesWalter A P Abrahão
May 2, 2018·Environmental Science and Pollution Research International·Gisely S BarcelosMassimo Gasparon
Dec 29, 2020·Environmental Research·Arzhang Fathi-GerdelidaniKarim Shahbazi
May 24, 2014·Environmental Science & Technology·Guowen DongQingbiao Li

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