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Extraction and micro-determination of vanadium(V) in the environment with α-phenylstyrylacrylo-substituted hydroxamic acid and Aliquat 336 and inductively coupled plasma atomic emission spectrometry

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Abstract

A selective and sensitive method for the microgram determination of vanadium(V) with α-phenylstyrylacrylohydroxamic acid by selective extraction of the blueish violet vanadium-hydroxamate complex with Aliquat 336 from acidic medium is described. The effect of thiocyanate on the extraction is discussed. The vanadium-hydroxamate complex has λmax 553 nm and molar absorptivity 7.8 × 103 l mol−1 cm−1, while the mixed 1∶2∶1 complex, vanadium-hydroxamate-Aliquat 336, has λmax 546 nm and molar absorptivity 8.2 × 103 l mol−1 cm−1. The system obeys Beer's law in the range 0.3−10.0 mg l−1 vanadium. Sandell's sensitivity is 0.00624 μg cm2. The sensitivity is increased twentyfold by inductively coupled plasma atomic emission measurements on the extract and the detection limit is more than 1 ng ml−1. Vanadium is determined in standard alloys, rock, environmental and clinical samples.

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Authors and Affiliations

  1. Chemistry Department, School of Sciences, Gujarat University, Ahmedabad, India

    Kalpesh R. Patel, S. K. Menon & Yadavendra K. Agrawal

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  1. Kalpesh R. Patel
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  2. S. K. Menon
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  3. Yadavendra K. Agrawal
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Patel, K.R., Menon, S.K. & Agrawal, Y.K. Extraction and micro-determination of vanadium(V) in the environment with α-phenylstyrylacrylo-substituted hydroxamic acid and Aliquat 336 and inductively coupled plasma atomic emission spectrometry. Mikrochim Acta 130, 219–224 (1999). https://doi.org/10.1007/BF01242909

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  • DOI: https://doi.org/10.1007/BF01242909

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