| 标准加入法在能力验证考核酱油铅含量中的应用 |
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| 引用本文： | 罗红辉,王纪阳,刘萱清,张冲.标准加入法在能力验证考核酱油铅含量中的应用[J].光谱实验室,2009,26(4):949-951. |
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| 作者姓名： | 罗红辉 王纪阳 刘萱清 张冲 |
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| 作者单位： | 东莞市农产品质量安全监督检测所,广东省东莞市南城区西平绿色大道板岭东段,523086 |
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| 摘 要： | 采用标准加入法-硝酸钯基体改进剂消除酱油中食盐的机体干扰,建立了标准加入法-硝酸钯基体改进剂GFAAS测定酱油中痕量铅的方法,该方法的检出限为4.2μg/L,精密度为1.52%—4.96%,在5、20μg/L添加水平回收率为91.6%—108.2%,90.5%—101.7%,方法简单、快速、检出限符合标准分析要求。
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| 关 键 词： | 标准加入法 能力验证 基体改进剂 铅 石墨炉原子吸收光谱法 |
Standard Addition Method in the Evaluation of Proficiency Testing Lead Content in Soy Sauce Application |
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| Luo Hong-Hui,WANG Ji-Yang,LIU Xuan-Qing,ZHANG Chong.Standard Addition Method in the Evaluation of Proficiency Testing Lead Content in Soy Sauce Application[J].Chinese Journal of Spectroscopy Laboratory,2009,26(4):949-951. |
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| Authors: | Luo Hong-Hui WANG Ji-Yang LIU Xuan-Qing ZHANG Chong |
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| Institution: | (Dongguan Agricultural Testing ＆ Supervision lnstitution,Dongguan,Guangdong 523086,P. R. China) |
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| Abstract: | Using standard addition method-palladium nitrate matrix modifier to eliminate the salt in soy sauce matrix interference,a standard addition method-GFAAS was established for deter-mination of trace lead in soy sauce.The detection limit is 4.2μg/L,precision 1.52%—4.96%,at 5,20μg/L to add the level of recovery is 91.6%—108.2%,90.5%—101.7%,method is simple,rapid,and the detection limit in line with the standard analysis. |
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| Keywords: | Standard Addition Method Evaluation of Proficiency Matrix Modifier Lead GFAAS |
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