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Atomic Absorption Spectrometry of Nanogram Amounts of Cadmium, Lead and Zinc after Precipitation with 8-Quinolinol

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Abstract

A highly sensitive method was developed for the determination of cadmium, lead and zinc in natural waters by atomic absorption spectrometry after coprecipitation with 8-quinolinol. Quantitative recoveries of the metals were possible over the pH range 8–10 when magnesium was present as a carrier ion. The precipitates thus formed were analyzed directly by an atomic absorption spectrometer equipped with a specially deviced graphite furnace and a miniature cup. Reliability of this procedure was confirmed by the determination of the metals in lake and river water samples. For the analysis of a 400-cm3 portion of water sample, detection limits(3σb) for Cd(II), Pb(II) and Zn(II) are 0.6, 2.3 and 1.9 ng dm-3, respectively. A corresponding precision of 3–5% was typical.

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Authors and Affiliations

  1. Kitami Institute of Technology, Kitami, 090, Japan

    Kunihiko Akatsuka, Naoki Nobuyama & Ikuo Atsuya

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  1. Kunihiko Akatsuka
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  2. Naoki Nobuyama
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  3. Ikuo Atsuya
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Akatsuka, K., Nobuyama, N. & Atsuya, I. Atomic Absorption Spectrometry of Nanogram Amounts of Cadmium, Lead and Zinc after Precipitation with 8-Quinolinol. ANAL. SCI. 4, 281–285 (1988). https://doi.org/10.2116/analsci.4.281

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  • DOI: https://doi.org/10.2116/analsci.4.281

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