Determination of Metal Elements in Marine Planktons after Pressurized Acid Decomposition

  • Ebihara Noboru
    Chiba Industrial Technology Research Institute
  • Uchida Tetsuo
    Chiba Prefectural Environmental Research Center
  • Ogura Hisako
    Research Institute for Culture Properties, Beppu University
  • Oguma Koichi
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University

Bibliographic Information

Other Title
  • 海洋プランクトンの加圧酸分解と微量元素定量
  • カイヨウ プランクトン ノ カアツ サン ブンカイ ト ビリョウ ゲンソ テイリョウ

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Description

A simple and complete decomposition method has been developed for the determination of trace elements in marine planktons using a pressurized decomposition vessel. Planktons were filtered through a PTFE filter and washed with an ammonium formate solution. After drying, the filter adhering planktons was weighed into a PTFE decomposition vessel with a stainless-steel jacket for digestion using a mixture of nitric, perchloric and hydrofluoric acids at elevated temperature. The sample solution was evaporated to dryness, and the residue was taken up with hydrochloric acid for the determination of metals by ICP-AES. Ethanol washing brought about plasmoptysis and yielded samples for the determination of trace elements in exoskeltons. The planktons collected in Tokyo Bay contained iron, aluminum, titanium, manganese, zinc, copper and chromium of 104 - to 106 - fold concentrations compared with those in seawater.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 55 (11), 855-861, 2006

    The Japan Society for Analytical Chemistry

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