| 固体进样-冷原子吸收法测定食用明胶中的微量汞 |
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| 引用本文： | 薛长一,陈明岩,徐立明,李玲.固体进样-冷原子吸收法测定食用明胶中的微量汞[J].化学分析计量,2011,20(3):65-66. |
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| 作者姓名： | 薛长一 陈明岩 徐立明 李玲 |
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| 作者单位： | 1. 长春市农产品质量安全与检测中心,长春,130062
2. 吉林出人境检验检疫局,长春,130062 |
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| 摘 要： | 样品直接置于石英舟中,在高纯氧气氛中燃烧,释放出的汞与齐化管中的金形成金汞齐,于900℃加热释放出汞蒸气,用冷原子吸收法测定汞的含量。方法的检出限为0.003 ng,测定结果的相对标准偏差为1.13%(n=6),加标回收率为90.5%~97.0%,并用标准样品对方法进行了确证。该方法具有良好的精密度与准确度,适用于明胶中微量汞的测定。
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| 关 键 词： | 固体进样 直接测汞仪 明胶 汞 |
DETERMINATION OF TRACE MERCURY IN EDIBLE GELATIN BY COLD VAPOUR ATOMIC ABSORPTION SPECTROSCOPY WITH SOLID SAMPLING |
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| Xue Changyi,Chen Mingyan,Xu Liming,Li Ling.DETERMINATION OF TRACE MERCURY IN EDIBLE GELATIN BY COLD VAPOUR ATOMIC ABSORPTION SPECTROSCOPY WITH SOLID SAMPLING[J].Chemical Analysis And Meterage,2011,20(3):65-66. |
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| Authors: | Xue Changyi Chen Mingyan Xu Liming Li Ling |
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| Institution: | Xue Changyi (Changchun Agricultural Product Quality Safety Inspection & Testing Center,Changchun 130061,China) Chen Mingyan,Xu Liming,Li Ling (Jilin Entry-Exit Inspection and Quarantine Bureau,Changchun 130062,China) |
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| Abstract: | The sample was burned in the quartz boat with high pure oxygen, and mercury was released after Hg- Au being generated through the collecting tube. The alloy was heated to 900 ℃ to release mercury, then the mercury vapor was determined by cold atomic absorption spectrometry. The detection limit of the method was 0. 003 ng. The relatively standard deviation of determination results was 1.13% （n =6） and the recovery was 90.5% -96.7%. The method was confirmed by standard materials. The method has good precision and accuracy and fit the determination of trace Hg in gelatin. |
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| Keywords: | solid sampling direct mercury analyzer gelatin mecury |
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