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Simultaneous determination of copper, mercury and lead by first-order derivative spectrophotometry using dithizone as reagent

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Abstract

A first-order derivative spectrophotometric method has been developed for the simultaneous determination of copper, mercury and lead at μg/L levels using dithizone as reagent. The procedure involves the simultaneous extraction of these elements by dithizone in chloroform from weakly alkaline solutions. Linear calibration curves were obtained in the ranges 0.5–10 (Cu), 1–10 (Hg) and 1–10 (Pb) μg present in 40 ml of aqueous phase with detection limits of 5 μg/L (Cu) and 20 μg/L (Hg and Pb). The R.S.D.s for 100 μg/L of copper, mercury and lead were 2.5, 2.6 and 3.1% respectively, for 5 determinations. The method is applicable for the determination of copper and lead in marine sediment samples with good precision and accuracy.

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Authors and Affiliations

  1. Regional Research Laboratory (CSIR), 695 019, Trivandrum, India

    Lata Mathew, Talasila Prasada Rao, Chonatumatom S. P. Iyer & Alathur D. Damodaran

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  1. Lata Mathew
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  2. Talasila Prasada Rao
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  3. Chonatumatom S. P. Iyer
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  4. Alathur D. Damodaran
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Mathew, L., Prasada Rao, T., Iyer, C.S.P. et al. Simultaneous determination of copper, mercury and lead by first-order derivative spectrophotometry using dithizone as reagent. Mikrochim Acta 118, 249–256 (1995). https://doi.org/10.1007/BF01244365

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  • DOI: https://doi.org/10.1007/BF01244365

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