著者

善国 信隆 岩坪 健治 松井 幸雄 石谷 宏和 小熊 幸一

出版者

Japan Society of Ion Exchange

雑誌

日本イオン交換学会誌 (ISSN:0915860X)

巻号頁・発行日

vol.10, no.2, pp.44-48, 1999-08-31 (Released:2010-03-18)

参考文献数

9

被引用文献数

1 1

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淡水中のホウ素をフッ化水素酸系陰イオン交換法により濃縮し, ICP発光分析法で測定する方法を開発した。試料水にフッ化水素酸を添加し, 陰イオン交換樹脂カラムに通してホウ素をカラムに捕集する。次いでホウ素を硝酸でカラムから溶離し, ICP発光分析法 (182.6nm) で測定する。本法を市販飲料水に適用したところ, ホウ素の定量値は産地により異なり, 10~70ngBcm-3が得られた。また, 約50ngBcm-3の定量における相対標準偏差 (n=4または5) は7~12%であった。

著者

篠原 敏雄 松原 寛和 善国 信隆 小熊 幸一

出版者

公益社団法人 日本分析化学会

雑誌

分析化学 (ISSN:05251931)

巻号頁・発行日

vol.52, no.9, pp.851-853, 2003 (Released:2004-01-30)

参考文献数

10

被引用文献数

4 5

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The determination of boron in steel was carried out by ICP-AES combined with anion-exchange separation. About 0.2 g of a steel sample was weighed in a quartz beaker and dissolved with a mixture of 2 cm3 of nitric acid, 1.5 cm3 of phosphoric acid and 4 cm3 of water by heating on a hot plate. Most of the nitric acid was evaporated off and the sample solution was transferred into a separatory funnel with 10 cm3 of 0.1 mol dm−3 nitric acid and water. About 3 g of iron(III) hydroxide oxide was dissolved in a mixture of 10 cm3 of hydrofluoric acid, 1 cm3 of 30% hydrogen peroxide and 50 cm3 of water by heating on a hot plate and added to the above sample solution. The sample solution was diluted to about 100 cm3 with water, allowed to stand for 1 h and then loaded onto an anion-exchange resin Bio-Rad AG1 column preconditioned by a fluoride solution. The iron in the sample solution passed through the column, while the boron was adsorbed as BF4− on the column and recovered with 6.5 mol dm−3 nitric acid. The effluent, containing boron, was treated with phosphoric, perchloric and nitric acids and diluted to 25 cm3 with water to be subjected to ICP-AES at 249.77 nm. The proposed method was successfully applied to the determination of boron in a steel-certified reference material, JSS 174-5, provided by the Japan Iron and Steel Federation. The detection limit was found to be 1.3 μg g−1 boron in steel.