水質試験における金属の分析(第2報) : オキシン, 2-メチルオキシン抽出-薄層クロマト法によるアルミニウム, ベリリウムおよびクロムの定性分析

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Following after the previous paper, this paper reports the analysis of Al, Be and Cr by the combination of oxine, 2-methyloxine extraction and silica gel thin layer chromatography. Al, Be and Cr were extracted from sample water with chloroform after being treated with oxine (Ox) and 2-methyloxine (2-MOx) at pH 8. The chloroform extract was concentrated on a water bath, and treated with 0.5 ml of 3 N HCl. By this procedure, metals and some of oxine reagents were back-extracted together into acid layer. After removing the oxine reagents by bromination with sodium bromate-bromide system, the acid layer was applied to thin layer chromatography. The three metals were separated well by the solvent, ethanol : 1 N HNO_3 (99 : 1), and identified with oxine and ultra-violet ray for Al and Be, and with diphenylcarbazide for Cr respectively. The effect of anions, PO^<3->_4,BO^<3->_3,SO^<2->_4,C_2O^<2->_4,F^-, Cl^- and tartrate on the extraction of the three metals by oxine and 2-methyloxine method was also studied. Sensitivity of this method was found about 1 ppm for Be and Cr, and 0.1 ppm for Al.
公益社団法人日本薬学会の論文
1968-04-30