| 化学光谱法测定超痕量的金 |
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| 引用本文： | 蒋建华,马重光,陈方伦.化学光谱法测定超痕量的金[J].岩石矿物学杂志,1982,1(2):48-52. |
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| 作者姓名： | 蒋建华 马重光 陈方伦 |
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| 作者单位： | 河南省地质局实验室
(蒋建华，马重光)，河南省地质局实验室(陈方伦) |
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| 摘 要： | 本法改用新型活性炭吸附柱减小灰分量,以石墨粉作活性炭灰分的分散剂,采用快速曝光,于国产一米平面光栅摄谱仪上获得测金的绝对灵敏度为1—2毫微克,为测定地质试样中低于地壳丰度量的金提供了一个精确、快速的分析方法。线性范围为2毫微克—30微克,测定o.x-xppb样品的变动系数20—27％,可用以分析含金0.1—3000ppb的试样。
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Determination of Ultratrace of Gold by Chemical Spectrographic Method |
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| Abstract: | An accurate and highly sensitive spectrographic method for the determina
tion of ultratrace gold was reported. This method was based on the use of a
small activated carbon column for collecting gold. The quantity of the activa-
ted carbon used in the column was so arranged that the weight of the ash formed
after ignition was about 0.1-0.15mg. The ash was then subjected to spectro-
graphic determination. This method can be applied in the concentration range
of 0.1-3000 ppb of gold. The coefficient of variation of gold was 20-27% for
geological materials containing O.x-xppb of gold. Calibration curve was linear in
the range of 2 ng-30ng of gold. The detection limit was 1-2ng. |
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