Determination of Cd, Cr and Pb in Polyethylene Resin by Inductively Coupled Plasma Atomic Emission Spectrometry after Open System Wet Decomposition Using a Mixture of Nitric Acid and Sulfuric Acid

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  • 硫酸・硝酸開放系湿式分解／誘導結合プラズマ発光分析法によるポリエチレン樹脂中のカドミウム，クロム及び鉛の定量
  • リュウサン ショウサン カイホウケイ シッシキ ブンカイ ユウドウ ケツゴウ プラズマ ハッコウ ブンセキ ホウ ニ ヨル ポリエチレン ジュシ チュウ ノ カドミウム クロム オヨビ ナマリ ノ テイリョウ

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Abstract

A new sample-preparation method was proposed for the determination of cadmium (Cd), chromium (Cr) and lead (Pb) in polyethylene resin by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The polyethylene resin sample was decomposed by using a mixture of nitric acid and sulfuric acid. The bumping was reduced by using a new type of watch glass with a stem. The precipitation of PbSO4 was dissolved by an aqueous solution of 20∼25% ammonium acetate/acetic acid. The standard reference materials of resin (BCR-680, BCR-681) were analyzed to verify the proposed method. The obtained results for Cd, Cr and Pb by this method were in good agreement with their certified and reference values.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 54 (11), 1107-1111, 2005

    The Japan Society for Analytical Chemistry

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