| 石墨炉原子吸收法测定钛铁矿中的微量镉 |
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| 引用本文： | 姜云.石墨炉原子吸收法测定钛铁矿中的微量镉[J].山东地质,2014(1):61-63. |
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| 作者姓名： | 姜云 |
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| 作者单位： | 山东省地质科学研究院,山东济南250013 |
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| 摘 要： | 研究了石墨炉原子吸收测定钛铁矿中微量元素 Cd 的方法，探索了在高含量的 Fe，Ti 基体干扰下以NH4H2PO4-H2NCSNH2-EDTA为混合基体改进剂的最佳仪器工作条件。在取样0．2000g，定容25 mL的条件下，方法检出限为0．006μg/g，用国家标准物质验证，其准确度（犚犈％）＜10％，12次测定精密度（犚犛犇％）＜10％，加标回收率90％～110％之间，符合国家相关要求。
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| 关 键 词： | 钛铁矿 石墨炉原子吸收 微量镉 测定方法 |
Determination of Trace Cadmium in Ilmenite by Graphite Furnace Atomic Absorption Spectrometry |
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| JIANG Yun.Determination of Trace Cadmium in Ilmenite by Graphite Furnace Atomic Absorption Spectrometry[J].Geology of Shandong,2014(1):61-63. |
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| Authors: | JIANG Yun |
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| Institution: | JIANG Yun (Shandong Institute of Geological Sciences, Shandong Jinan 250013, China) |
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| Abstract: | Determination of trace elements Cd in ilmenite deposit by using graphite furnace atomic absorp-tion method has been studied,and the best instrument condition under the matrix interference with high content of Fe,Ti and NH4 H2 PO4-H2 NCSNH2-EDTA mixed matrix modifier has been studied.In pick-ing sampling 0.2000g,25 mL volumetric conditions,the detection limit was 0.006μg/g,and using a na-tional standard to verify,its accuracy （RE%）〈10%,12 times measured precision degree （RSD%）〈10%,and the recovery is 90%~110%. |
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| Keywords: | Ilmenite deposit graphite furnace atomic absorption trace cadmium determination |
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