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| 原子荧光法测定总砷含量不确定度评定 | |
| 引用本文： | 冯晓元,李文生,王宝刚,张长松,石磊,杨军军,潘立刚.原子荧光法测定总砷含量不确定度评定[J].中国农学通报,2009,25(21):77-81. |
| 作者姓名： | 冯晓元 李文生 王宝刚 张长松 石磊 杨军军 潘立刚 |
| 作者单位： | 1. 北京市农林科学院林业果树研究所,北京,100093;北京农产品质量检测与农田环境监测技术研究中心,北京,100097 2. 北京市农林科学院林业果树研究所,北京,100093 3. 北京农产品质量检测与农田环境监测技术研究中心,北京,100097 |
| 基金项目： | 北京市科委项目资助"桃果铅和镉来源及残留清除方式" |
| 摘 要： | 以圆白菜标准物质为材料，评估原子荧光法测定总砷含量的不确定度。根据不确定度分量大小可以得出，砷测定值的不确定度主要来源于测定过程中校准曲线的不确定度。该方法测定总砷含量的扩展不确定度为0.0098 mg/kg，检测结果为(0.066±0.010) mg/kg，在标准物质含量(0.062±0.014) mg/kg的范围内，表明方法的分析过程处于质控状态，结果可靠。 |
| 关 键 词： | 温室蝴蝶兰 温室蝴蝶兰 生长模型 温室控制 |
| 收稿时间： | 2009-06-10 |
| 修稿时间： | 2009-06-29 |
Evaluation of measurement uncertainty on arsenic detection by atomic fluorescence spectrometer |
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| Feng Xiaoyuan,Li Wensheng,Wang Baogang,Zhang Changsong,Shi Lei,Yang Junjun,Pan Ligang.Evaluation of measurement uncertainty on arsenic detection by atomic fluorescence spectrometer[J].Chinese Agricultural Science Bulletin,2009,25(21):77-81. | |
| Authors: | Feng Xiaoyuan Li Wensheng Wang Baogang Zhang Changsong Shi Lei Yang Junjun Pan Ligang |
| Institution: | Feng Xiaoyuan, Li Wensheng, Wang Baogang, Zhang Changsong, Shi Lei, Yang Junjun, Pan Ligang (1.Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093; 2Beijing Research Center for Agrifood Testing and Farmland Monitoring, Beijing 100097) |
| Abstract: | The total arsenic content of cabbage as a certified reference material (CRM) was analyzed in order to evaluate the measurement uncertainty of Atomic Fluorescence Spectrometer (AFS) method. The result showed that the uncertainty in measurement was contributed to that of the standard curve is main uncertainty component. The expanded uncertainty of AFS measurement was 0.0098 mg/kg. The detected total As contend in the cabbage sample was (0.066±0.010) mg/kg，which was consistent with CRM value (0.062±0.014) mg/kg. Results suggested that analysing procedure of As content was under control and reliable. |
| Keywords: | Atomic fluorescence spectrometryzz Total arseniczz Measurement Uncertaintyzz |
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