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地质样品及某些环境样品中微量锗的测定,通常采用蒸馏、萃取分离苯笏酮光度法,流程长。本文用混酸分解样品后,直接对此样品溶液在直流等离子体发射光谱仪上测定微量锗,获得较好效果。一试剂高标溶液:称取经600℃灼烧过的纯GeO_2 0.1441克于小烧杯中,加水100毫升,加热溶解,移入1000毫升量瓶,用水稀释至刻度。此液每毫升含100微克锗。以此标准溶液配制成含锗10微克·毫升~(-1);磷酸10%,氯化锂5%的高标溶液。低标溶液:以随样品处理的试剂空白为低标溶液。二试样分解方法称取0.5克试样,置于30毫升聚四氟乙烯坩埚中,
Geological samples and some environmental samples Determination of trace germanium, usually by distillation, extraction and separation Photinaclor spectrophotometry, the flow length. In this paper, mixed acid decomposition sample, the direct determination of trace germanium on this sample solution in the direct current plasma emission spectrometer, get better results. A reagent high standard solution: Weigh by burning 600 ℃ pure GeO_2 0.1441 grams in a small beaker, add water 100 ml, heated to dissolve, into the 1000 ml volumetric flask, diluted with water to the mark. This solution contains 100 micrograms germanium per milliliter. Prepare high standard solution containing germanium 10 microgram · milliliter -1; phosphoric acid 10% and lithium chloride 5%. Low standard solution: The reagent blank treated with the sample is the lower standard solution. Two sample decomposition method Weigh 0.5 g sample, placed in 30 ml Teflon crucible,