| 小体积萃取-石墨炉原子吸收法测定高纯硝酸钡中纳克级重金属元素 |
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| 引用本文： | 董高翔,熊采华,汪康康,陈超英.小体积萃取-石墨炉原子吸收法测定高纯硝酸钡中纳克级重金属元素[J].岩矿测试,1991(4):287-290. |
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| 作者姓名： | 董高翔 熊采华 汪康康 陈超英 |
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| 作者单位： | 湖北省地质实验研究所 武汉430022
(董高翔，熊采华，汪康康)，湖北省地质实验研究所 武汉430022(陈超英) |
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| 基金项目： | 国家八六三计划资助基金项目内容之一 |
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| 摘 要： | 本文研究了石墨炉原子吸收光谱法测定高纯硝酸钡中超痕量重金属元素的分析技术。提出在大量钡基体存在时,采用小体积萃取体系APDC-MIBK同时萃取纳克级的Fe、Cu、Co和Ni。该法具有灵敏度高、无干扰、操作方便和减少沾污等特点。方法检出限为:Fe 7.2ng/g、Cu 12.8ng/g、Co 4.4ng/g和Ni 6.7ng/g。应用于红外光纤原料硝酸钡、硝酸铝中痕量重金属的测定,效果良好。
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| 关 键 词： | 铁 铜 钴 镍 石墨炉原子吸收法 小体积萃取分离富集 |
The Determination of Nanogram Amounts of Heavy Metal Elements in Highly Pure Barium Nitrate by Extraction-GFAAS |
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| Dong Gaoxiang,Xiong Caihu,Wang Kangkang and Chen Chaoying.The Determination of Nanogram Amounts of Heavy Metal Elements in Highly Pure Barium Nitrate by Extraction-GFAAS[J].Rock and Mineral Analysis,1991(4):287-290. |
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| Authors: | Dong Gaoxiang Xiong Caihu Wang Kangkang and Chen Chaoying |
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| Abstract: | The determination of ultra-trace heavy metal elements in pure barium nitrate by graphite furnace atomic absorption spectrometry is reported. An APDC/M1BK extraction for the nanogram amounts of Fe, Cu, Co and Ni in barium salt is simultaneous performed in small volume. This method is characterized with high sensibility, less interference, easy operation and little contamination. It has been well used in the determination of ultra-trace heavy metals in the raw materials of infared optical cellolose. The detection limits and: Fe 7.2 ng/g, Cu 12.8 ng/g, Co 4.4 ng/g and Ni 6.7 ng/g. |
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| Keywords: | Fe Cu Co Ni graphite furnace atomic absorption spectrometry (GFAAS) extraction |
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