Wet Acids Digestion/ICP-AES for the Determination of Boron in Environmental Samples.

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  • 湿式酸分解／ＩＣＰ発光分析法による環境試料中のほう素の定量
  • シッシキサン ブンカイ ICP ハッコウ ブンセキ ホウ ニ ヨル カンキョウ シリョウ チュウ ノ ホウソ ノ テイリョウ

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Abstract

A precise and simple method was examined for the determination of boron in environmental samples. The sample was digested with HF/HNO3/HClO4/H3PO4, then boron was determined by ICP/AES. The addition of phosphoric acid proved to be effective to prevent any volatilization loss of boron during digestion of sample and evaporation of the resulting solution.<BR>Analytical results of ten standard reference materials showed good agreement with the provisional values or literature values. The precision for the determination of boron (relative standard deviation at 3 determinations) was 1.0-4.2% when LKSD-1-4 were analyzed. Sediments, rock, coal fly ash and soil values determined using the proposed digestion method were comparable to those obtained using conventional sodium carbonate fusion method.<BR>The concentration in river, lake and marine sediments in Kanagawa prefecture were detected in the range from 4.09-44.2μg/g (average 21.3μg/g) .

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