| 前处理方法对3种谷物样品总铝含量测定的影响 |
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| 引用本文： | 陈国友,杜英秋,马永华,张桂华,刘丽.前处理方法对3种谷物样品总铝含量测定的影响[J].中国粮油学报,2011,26(10):114-117. |
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| 作者姓名： | 陈国友 杜英秋 马永华 张桂华 刘丽 |
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| 作者单位： | 1. 农业部谷物及制品质量监督检验测试中心,哈尔滨,150086
2. 农业部农产品质量监督检验测试中心,哈尔滨,150086 |
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| 摘 要： | 方法采用微波消解处理3种谷物样品,增加赶酸提取步骤,溶解试样中酸不溶铝,应用电感耦合等离子体质谱(ICP-MS)法测定总Al含量,研究3种不同前处理方法对样品中总Al含量测定的影响。优化微波消解条件、ICP-MS仪器测定条件,选择国际通用EPA200-8标准干扰校正方程;利用小麦全粉(GBW10011)国家标准物质及添加回收率试验验证方法的准确度与可靠性。前处理方法差异对样品中总Al测定值的影响:直接消解法测定值低于标准值;硫酸赶酸法和高氯酸赶酸法测定值均在标准值允许范围内;3种方法的添加回收率均较好。说明直接消解法处理试样存在着酸不溶铝,后两种处理方法准确、可靠,是ICP-MS法测定3种谷物中总Al最佳的样品前处理方法。
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| 关 键 词： | 谷物 前处理方法 总铝 电感耦合等离子体-质谱法 |
Impact of Pre- treatment Method on Determination of Total A1 in Samples of Three Cereals |
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| Chen Guoyou,Du Yingqiu,Ma Yonghua,Zhang Guihua,Liu Li.Impact of Pre- treatment Method on Determination of Total A1 in Samples of Three Cereals[J].Journal of the Chinese Cereals and Oils Association,2011,26(10):114-117. |
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| Authors: | Chen Guoyou Du Yingqiu Ma Yonghua Zhang Guihua Liu Li |
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| Affiliation: | Chen Guoyou1 Du Yingqiu1 Ma Yonghua1 Zhang Guihua1 Liu Li2 (Inspection and Testing Center for Quality of Cereals and Their Products Ministry of Agriculture1,Harbin 150086)(Inspection and Testing Center for Quality of Agricultural products Ministry of Agriculture2,Harbin 150086) |
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| Abstract: | Three cereal samples were digested by microwave in this method,driving away acid extraction step was added to melt the acid insoluble aluminum in samples,content of total Al was determined by inductively coupled plasma mass spectrometry(ICP-MS),the impact on the determination results of total Al due to three different pre-treatment methods for samples was studied as well,to optimize the conditions of microwave digestion and ICP-MS instrument,selection of international common standards for interference corre... |
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| Keywords: | Cereals pre-treatment method total Al inductively coupled plasma mass spectrometry(ICP-MS) |
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