| CID-ICP-AES测定碱土金属的分析性能 |
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| 引用本文： | 辛仁轩. CID-ICP-AES测定碱土金属的分析性能[J]. 光谱学与光谱分析, 2004, 24(4): 477-480 |
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| 作者姓名： | 辛仁轩 |
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| 作者单位： | 清华大学核能技术设计研究院,北京,100084 |
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| 摘 要： | 电荷注入检测器 (CID)配合中阶梯光栅分光系统组成的光谱仪有一些新的特性 ,研究了用CID ICP光谱仪测定碱土金属的分析性能。实验表明 ,碱土 (Be,Mg ,Ca ,Sr,Ba)元素有良好的检出限 :Be ,Sr,Ba 0 0 0 0 2mg·L- 1 ,Mg 0 0 0 0 1mg·L- 1 ,Ca 0 0 0 0 0 3mg·L- 1 ,线性动态范围 10 4 ～ 10 5,自吸收系数均 <1,Ca,Mg的自吸收系数低至 0 7～ 0 8。研究了光度精度与浓度和谱线强度的关系 ,试液浓度在 1mg·L- 1 以上时 ,测定有良好的精密度。
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| 关 键 词： | ICP-AES 碱土元素 电荷注入检测器 分析性能 |
| 文章编号： | 1000-0593(2004)04-0477-04 |
| 修稿时间： | 2002-12-18 |
Analytical Performance of CID-ICP-AES for Alkaline-Earth Elements |
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| XIN Ren-xuan Institute of Nuclear Energy Technology,Tsinghua University,Beijing ,China. Analytical Performance of CID-ICP-AES for Alkaline-Earth Elements[J]. Spectroscopy and Spectral Analysis, 2004, 24(4): 477-480 |
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| Authors: | XIN Ren-xuan Institute of Nuclear Energy Technology Tsinghua University Beijing China |
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| Affiliation: | Institute of Nuclear Energy Technology, Tsinghua University, Beijing 100084, China. |
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| Abstract: | The plasma spectrometer composed of Charge Injection Device (CID) and echell grating has excellent analytical performance. In the present paper, analytical performance of CID-ICP-AES was studied for alkaline-earth elements. The results showed that the detection limits were 0.00003 mg x L(-1) for Ca, 0.0002 mg x L(-1) for Be, Sr and Ba, and 0.0001 mg x L(-1) for Mg. The self-absorption coefficient was less than 1 for all alkaline earth elements and 0.7-0.8 for Ca and Mg. The linear range of the determination was 10(4)-10(5). The photometric precision was RSD=1% when concentration was less than 1 mg x L(-1). |
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| Keywords: | ICP-AES Alkaline-earth elements Charge Injection Device(CID) Analytical performance |
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