| 张华.次灵敏线-火焰原子吸收光谱法连续测定
高品位矿石中的铜铅锌量[J].地质与勘探,2010,46(Z1):1282-1287 |
| 次灵敏线-火焰原子吸收光谱法连续测定
高品位矿石中的铜铅锌量 |
| Continuous Measurements of Copper, Lead and Zinc Content in Ore Samples by theFlame Atomic Absorption Spectrometry With Hyposensitive Lines |
| 投稿时间：2010-10-25 修订日期：2010-11-20 |
| DOI： |
| 中文关键词: 次灵敏线 火焰原子吸收光谱法 铜 铅 锌摇高品位矿石 |
| 英文关键词: hyposensitive line, flame atomic absorption spectrometry, copper, lead, zinc, high-grade ore sample |
| 基金项目: |
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| 摘要点击次数: 2643 |
| 全文下载次数: 1813 |
| 中文摘要: |
| [摘要]分别以铜327郾4 nm 和249郾2nm、铅283郾3 nm 和261郾4nm、锌307郾6nm 次灵敏线为分析线,
火焰原子吸收光谱法测定了高品位矿石中铜、铅、锌的含量。考察了高品位矿石基体及主要杂质的干扰
情况,结果表明,铜、锌质量浓度小于2 mg/ ml 时,对铅的测定无干扰;铅质量浓度小于2 mg/ ml 时,对铜
测定无干扰,其质量浓度小于0郾5mg/ ml 时,对锌测定无干扰;测定溶液中主要杂质铁、钴、镍、钙、镁质量
浓度在1mg/ ml,铝、硅质量浓度在0郾2mg/ ml 对测定无干扰。铜铅锌的质量浓度分别在0 ~ 1000滋g/ ml
范围内呈良好的线性关系。方法的精密度(RSD,n=5) 小于5%,加标回收率在98郾91% ~ 101郾08%,测
定铜铅锌矿石国家标准物质,结果与标准值相符。 |
| 英文摘要: |
| Abstract:The content of copper, lead and zinc in high-grade ore samples was measured by the flame atomic absorption spectrometry with the hypo鄄
sensitive lines of copper (327. 4 nm and 249. 2nm), lead (283. 3 nm and 261. 4nm) and zinc(307. 6nm ) as the analytical lines, respectively. The in鄄
terferences of matrix and major impurities in these samples were examined. The results show that when the mass concentrations of copper and zinc are less
than 2mg/ ml, they had no interference on the determination of lead. When the mass concentration of lead was less than 2mg/ ml, it had no interference
on the determination of copper. And as the mass concentration of lead was less than 0. 5mg/ ml, it had no interference on the determination of zinc; When
the mass concentrations of major impurities including iron, cobalt, nickel, calcium and magnesium were less than 1mg/ ml, silicon and aluminum were
less than 0. 2mg/ ml, they had no interference on the determination of copper, lead and zinc. The linearity range of copper, lead and zinc was 0 ~
1000滋g/ ml. The precision of the method was less than 5% (RSD, n=5), and the recovery rates of the method for the elements were in the range of 98.
91% ~101. 08% . The method has been applied to the determination of copper, lead and zinc in high-grade ore samples meeting the national standards,
and the results are in agreement with certified values. |
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