Development of ICP-OES, ICP-MS and GF-AAS Methods for Simultaneous Quantification of Lead, Total Arsenic and Cadmium in Soft Drinks

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  • 清涼飲料水中の鉛，総ヒ素，カドミウムの一斉定量を目的としたICP-OES法，ICP-MS法，電気加熱式原子吸光法の開発
  • セイリョウ インリョウ スイチュウ ノ ナマリ,ソウ ヒソ,カドミウム ノ イッセイ テイリョウ オ モクテキ ト シタ ICP-OESホウ,ICP-MSホウ,デンキ カネツシキ ゲンシ キュウコウホウ ノ カイハツ

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Abstract

In this study, we developed methods to quantify lead, total arsenic and cadmium contained in various kinds of soft drinks, and we evaluated their performance. The samples were digested by common methods to prepare solutions for measurement by ICP-OES, ICP-MS and graphite furnace atomic absorption spectrometry (GF-AAS). After digestion, internal standard was added to the digestion solutions for measurements by ICP-OES and ICP-MS. For measurement by GF-AAS, additional purification of the digestion solution was conducted by back-extraction of the three metals into nitric acid solution after extraction into an organic solvent with ammonium pyrrolidine dithiocarbamate. Performance of the developed methods were evaluated for eight kinds of soft drinks.

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