| 大米成分分析标准物质的研制 |
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| 引用本文： | 程志中,黄宏库,刘妹,顾铁新,鄢卫东.大米成分分析标准物质的研制[J].化学分析计量,2011,20(3):7-10. |
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| 作者姓名： | 程志中 黄宏库 刘妹 顾铁新 鄢卫东 |
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| 作者单位： | 中国地质科学院地球物理地球化学勘查研究所,廊坊,065000 |
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| 基金项目： | 国家地质调查项目(1212010511218) |
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| 摘 要： | 从辽宁盘锦、四川简阳和湖南岳阳采集3个大米标准物质为候选物,粉碎至粒径小于0.18 mm的颗粒,并充分混匀.采用X-射线荧光光谱法进行均匀性检验,采用等离子体质谱法进行稳定性检验,结果显示制备的大米标准物质均匀性、稳定性良好.由14家实验室联合定值,采用高灵敏度、高精度的方法测试了58种元素,其中43种元素给出标准值.
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| 关 键 词： | 大米 化学成分 标准物质 标准值 不确定度 |
PREPARATION OF REFERENCE MATERIALS FOR RICE COMPONENT ANALYSIS |
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| Cheng Zhizhong,Huang Hongku,Liu Mei,Gu Tiexin,Yan Weidong.PREPARATION OF REFERENCE MATERIALS FOR RICE COMPONENT ANALYSIS[J].Chemical Analysis And Meterage,2011,20(3):7-10. |
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| Authors: | Cheng Zhizhong Huang Hongku Liu Mei Gu Tiexin Yan Weidong |
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| Institution: | Cheng Zhizhong,Huang Hongku,Liu Mei,Gu Tiexin,Yan Weidong (Institute of Geophysical and Geochemical Exploration,Langfang 065000,China) |
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| Abstract: | Three rice samples were collected from Liaoning,Sichuan and Hunan province.The raw were dried,then ball milled to pass a 0.18 mm(80 mesh).The samples were determined by powder XRF and ICP-MS in duplicate for homogeneity and stability testing.The analytical results indicated that all elements tested could be considered to be distributed homogeneously.A multi-laboratory collaborative analysis scheme was adopted in the determiantion procedure.58 elements were analyzed,and the certified values of 43 elements we... |
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| Keywords: | rice chemical composition reference materials certified values uncertainty |
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