4-ベンゾイル-3-メチル-1-フェニル-5-ピラゾロンを用いるマンガンの溶媒抽出 : 原子吸光分析

概要

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The use of the enrichment process by extraction technique prior to the determination by atomic absorption spectrophotometry is very effective to remove interferences and to concentrate the trace element. The procedure was applied to the determination of the trace amount of mangancse by the extraction of its complex of 4-benzoyl-3-methyl-1-phenyl-5-pyrazolone(BMPP) into MIBK, and subsequently by the atomic absorption spectrophotomelry. The standard analytical procedure is as follows: After neutralizing the sample solution containing less than 4.0 μg of manganese, it was adjusted to pII 8.0 by adding 5 ml of NH_4OH-NH_1Cl buffer solution, and then the solution was made up to 40 ml with distilled water. After the manganese was extracted as the Mn-BMPP complex into 10 ml of 0.1%(w/v) BMPP-MIBK solution by shaking them for 5 min, the separated organic phase was centrifuged for 5 min to remove the trace of water in it. Atomic absorption measurements were done for the organic phase thus obtained. This method was applied to determine manganese in carbonated drinks by means of a standard addition procedure.
社団法人日本分析化学会の論文
1979-03-05