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地质科学  1995, Vol. Issue (2): 190-194    DOI:
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APDC-MIBK萃取石墨炉原子吸收法测定地质样品中痕量钯
伊丽莹, 张海政
中国科学院地质研究所, 北京100029
DETERMINATION OF TRACE PALLADIUM IN GEOLOGICAL MATERIALS BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY AFTER EXTRACTION WITH APDC-MIBK
Yi Liying, Zhang Haizheng
Institute of Geology. Academia Sinica, Beijing 100029
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摘要 近年来金矿源岩研究引起国内外地质学家的极大关注。贵金属元素把具有双重特性,在超镁铁质岩浆结晶过程中性状与金相近,表现出强烈亲硫的特点,新鲜的没有发生过任何金流失的岩石,二者比值近似为一常数。把在成岩乃至于变质作用过程中呈惰性,保持其原始含量不变而又与金性状完全不同,这种双重性特征有可能借助于常数K=Au(原)/Pd(原),推算出没有发生过任何金流失时的岩石原始金含量(王建安,1986)。即通过样品中把的分析值求得原始金含量,借此对金矿源岩进行研究与判定。
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伊丽莹
张海政
关键词   APDC-MIBK   萃取   石墨炉原子吸收法     
Abstract: A method was developed for determination of trace Pd in geological materials in this paper. Palladium is extracted into methylisobutyl ketone(MIBK)from strong acid medium using ammonium pyrolidine dithiocarbamate(APDC)as the ligand.The organic phase is analysed for Pd by graphite furnace atomic absorption spectrometry(GFAAS). The best conditions of determination of Pd have been studied. The sensitivity of this method is higher than others. its characteristic mass is 1.68?10-11g/1% absorption. In order to measure the precision of this method, single analyses of the sample 72-Pt-01 were conducted ten times. The standard deviation was 0.005; the relative standard deviation was 18.7%. Five standard rocks and ores have been analysed by this method. Analysis values are similar to the published values.
Key wordsAPDC-MIBK   Extraction   GPAAS   Palladium   
收稿日期: 1993-02-26;
基金资助:国家黄金攻关课题
引用本文:   
伊丽莹,张海政. 1995, APDC-MIBK萃取石墨炉原子吸收法测定地质样品中痕量钯. 地质科学, (2): 190-194.
Yi Liying,Zhang Haizheng. DETERMINATION OF TRACE PALLADIUM IN GEOLOGICAL MATERIALS BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY AFTER EXTRACTION WITH APDC-MIBK[J]. Chinese Journal of Geology, 1995, (2): 190-194.
 
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[1] 张海政, 伊丽莹. 岩石中钍及稀土的萃取色层分离和分光光度测定法研究[J]. 地质科学, 1992, (2): 169-176.
 
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