| 化学光谱法测定超痕量金及其在区域化探工作中的应用 |
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| 引用本文： | 蒋建华,陈方伦,马重光. 化学光谱法测定超痕量金及其在区域化探工作中的应用[J]. 物探与化探, 1984, 8(2): 80-88 |
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| 作者姓名： | 蒋建华 陈方伦 马重光 |
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| 作者单位： | 河南省地矿局实验室(蒋建华，陈方伦)，河南省地矿局实验室(马重光) |
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| 摘 要： | 当前测定低于地壳丰度量金(2—4ppb),通常是采用中子活化、等离子发射光谱、石墨炉原子吸收光谱、原子发射光谱、萃取分光光度等方法。但这些方法由于仪器价格、分析效率、分析成本或灵敏度等不同的原因,致使区化扫面样品金的测定未能大规模开展。
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A SPECTROCHEMICAL METHOD FOR THE DETERMINATIONOF ULTRATRACE GOLD AND ITS APPLICATIONIN THE REGIONAL GEOCHEMICAL SURVEY |
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| Abstract: | This paper discusses the application of a spectrochemical method proposed by the authors, for the determination of ultratrace gold in regional geochemical reconnaissance including the supervisory control over sample preparation and analytical quality, and the precautions in operation. The absolute sensitivity of the method is 1 ng, sample weight being 10g.The coefficient of variation is 20-27% on determining o.n-n.10ppb of gold. Two thousand samples of various types have been taken for analysis. The 1142 stream sediment samples and 220 rock samples have furnished important information concerning the distribution of gold. |
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