| 氟化电热蒸发（ETV）－ICP－AES直接测定生物试样中不同挥发性元素的比较研究 |
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| 引用本文： | 秦永超,江祖成,胡斌,曾云鹗.氟化电热蒸发（ETV）－ICP－AES直接测定生物试样中不同挥发性元素的比较研究[J].分析科学学报,1995(2). |
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| 作者姓名： | 秦永超 江祖成 胡斌 曾云鹗 |
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| 作者单位： | 武汉大学化学系 |
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| 基金项目： | 国家自然科学基金,国家教委博士点基金 |
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| 摘 要： | 本文以聚四氟乙烯（ＰＴＥＥ）悬浮体为氟化剂，对悬浮体制样ＥＴＶ－ＩＣＰ－ＡＥＳ直接测定生物试样中不同挥发性元素锡、铜和镉的蒸发行为，影响因素及分析性能进行了比较研究，得出了相应的规律性。在选定实验条件下，本法测定ＭＯ，Ｃｕ和Ｃｄ的检出限分别为０．４３、４．２和１４１ｎｇ／ｍＬ，ＲＳＤ分别为３．８％、４．２％和２．２％。提出的方法已应用于ＣＲＭ２８１生物标样分析，结果与参考值吻合。
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| 关 键 词： | 悬浮体制样，氟化电热蒸发，生物试样，钼，铜，镉，电感耦合等离子体光谱 |
The Comparative Study on Direct Determination of Molybdenum,Copper and Cadmium in Biological Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry with Electrothermal Graphite Furnace Fluorinating Vaporization |
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| Qin Yonschao, Jiang Zucheng, Hu Bin, Zeng Yunl''''e.The Comparative Study on Direct Determination of Molybdenum,Copper and Cadmium in Biological Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry with Electrothermal Graphite Furnace Fluorinating Vaporization[J].Journal of Analytical Science,1995(2). |
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| Authors: | Qin Yonschao Jiang Zucheng Hu Bin Zeng Yunl'e |
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| Abstract: | A method for direct determination of Mo, on and Cd in biological samples by nuorination electrothermal vaporization-ICP-AES technique with polytetrafluoroethylene (PTFE) disperser as a fluorination agent has been described. The vaporization behaviour, effect factor and analytical characteristic of above mentioned elements with different volatile in ETV-ICP-AES were studied and the correlative regularity was obtained. Under selected experimental conditions the de. tection limit of Mo, Cu.and Cd were 0. 43, 4. 2 and 141 ng/ml, and the variation coefficients were 3. 8, 4. 2 and 2. 2% respectively. The method proposed has been applied in analysis of CRM 281 biological standard samples, and the results determined were in good agreement with the certified values. |
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| Keywords: | Slurry sampling Fluorinating electrothermal vaporization Biological samples Molybdenum Copper Cadmium ICP spectrometry |
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