マイクロウェーブ分解およびICP-MSを用いた合成樹脂製器具・容器包装中の有害元素の迅速分析法

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タイトル別名
  • Rapid analysis of harmful elements for food contact plastics using microwave digestion and ICP-MS
  • マイクロウェーブ ブンカイ オヨビ ICP-MS オ モチイタ ゴウセイ ジュシセイ キグ ・ ヨウキ ホウソウ チュウ ノ ユウガイ ゲンソ ノ ジンソク ブンセキホウ

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説明

Rapid method combining microwave digestion and ICP-MS analysis was developed for the simultaneous determination of seven harmful elements (Cd, Pb, Ba, As, Hg, Cr and Ag) in food contact plastics, the former four elements are regulated by the Japanese Food Sanitation Law. After microwave digestion of 100mg of milled sample with HNO3, digested solution was diluted and then applied to ICP-MS. The recoveries were mainly more than 80% using the standard and test solutions prepared by the equalized HNO3 concentrations with the internal standards. This new method was also valid for analysis of Pb in polypropylene containing barium sulfate which showed very low recovery by dry ash method adopted in Japanese official method.

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