Multielement Determination of Major-to-Ultratrace Elements in Common Salts by Inductively Coupled Plasma Atomic Emission Spectrometry and Inductively Coupled Plasma Mass Spectrometry

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  • JI Shan
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
  • YABUTANI Tomoki
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
  • ITOH Akihide
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
  • HARAGUCHI Hiroki
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University

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  • 誘導結合プラズマ発光分析法および誘導結合プラズマ質量分析法による食用塩の多元素定量
  • ユウドウ ケツゴウ プラズマ ハッコウ ブンセキ ホウ オヨビ ユウドウ ケツゴウ プラズマ シツリョウ ブンセキホウ ニ ヨル ショクヨウエン ノ タゲンソ テイリョウ

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Abstract

Major-to-ultratrace elements in common salts were determined by ICP-AES (inductively coupled plasma atomic emission spectrometry) and ICP-MS (inductively coupled plasma mass spectrometry). The salt samples (Fukken salt, Noto salt, Akoh salt, Seto salt, JT salt) were dissolved in pure water, and the salt water solutions were filtered with a membrane filter (pore size 0.45μm). The filtrates and the particulates remained on the filter for each salt sample were analysed as the water-soluble and particulate constituents of salts, respectively. Although the portion of particulates in natural salts was ca. 0.006-0.06%, the concentrations of Al, Ti, Fe, Zn, Ga, Y, rare earth elements, and Th in particulate constituents were more than 80% of their total concentrations in salt. Sodium, K, Mg, Ca and Sr were mostly in water-soluble forms. In addition, more than 80% of Mo and Cd were also in water-soluble forms for all salts examined here, reflecting their chemical forms in sea water.

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