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在鍺和二氧化鍺中的1到10p·p·m镓或铟的光度測定,鍺被蒸餾成氯化物除去,残留物中的镓借从6N盐酸中用乙醚萃取,而后从硷金属氰化物溶液中用8-羟基喹啉——三氯甲烷萃取分离出,並对其黄色的8-羟喹啉——三氯甲烷萃取物进行光度法測定。蒸去鍺后的残留物中,铟借从硷金屬氰化物溶液中用二苯磺腙—三氯甲烷萃取,而后在pH=3.5的水溶液中用8-羟基喹啉—三氯甲烷萃取分离出,並对其黄色的8羟基喹啉—三氯甲烷萃取物进行光度法测定。
In photometry of 1 to 10 p.p.m. gallium or indium in germanium and germanium dioxide, the germanium is distilled to remove the chloride, the gallium in the residue is extracted with 6 N hydrochloric acid from diethyl ether and the alkali metal cyanide The solution was extracted with 8-hydroxyquinoline-chloroform and the yellow 8-hydroxyquinoline-chloroform extract was determined spectrophotometrically. In the residue after the germanium is distilled off, the indium is extracted with diphenhydrazone-trichloromethane from the alkaline metal cyanide solution and then extracted with 8-hydroxyquinoline-trichloromethane in an aqueous solution of pH = 3.5 , And its yellow 8-hydroxyquinoline - chloroform extract photometric determination.