DETERMINATION OF IMPURITIES IN GRAPHITE BY ICP-MS AND AAS USING A METAL FURNACE

被引：0
|
作者：
SUZUKI, H
MIYATANI, T
YOSHIMOTO, O
机构：
来源：
BUNSEKI KAGAKU | 1993年 / 42卷 / 08期
关键词：
IMPURITIES IN GRAPHITE; ICP-MS; TUNGSTEN FURNACE AAS; PRETREATMENT METHOD;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Elemental impurities in graphite: boron, sodium, magnesium, aluminium, titanium, vanadium, chromium, manganese, iron, cobalt, and nickel, were determined by ICP-MS, and calcium, potassium, copper and zinc by AAS using a tungsten furnace. Ashing in oxygen-plasma below 400-degrees-C was employed for the determination of the following 6 elements: sodium, potassium, titanium, chromium, copper and zinc. Ashing at 880-degrees-C in an electric furnace having a quartz-tube was employed for the determination of the other 9 elements. The dissolution methods used for the ashes containing each element were studied from the viewpoint of kinds of acid used duration and temperature. With these results, a suitable pretreatment method was established for the determination of a trace amount of impurities in graphite.
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收藏
页码：485 / 489
页数：5
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