| 二次微分电位溶出法测定食品中铅含量 |
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| 引用本文： | 刘红伟,伍季,李向力,吕微.二次微分电位溶出法测定食品中铅含量[J].江西农业学报,2007,19(8):106-107,110. |
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| 作者姓名： | 刘红伟 伍季 李向力 吕微 |
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| 作者单位： | 河南省食品质量安全控制工程技术研究中心,河南,郑州,450002 |
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| 摘 要： | 通过对pH值、电沉积电位、平衡电位和时间的优化,建立了二次微分电位溶出法测定食品中铅含量。结果表明:该法测定食品样品与国家标准(石墨炉原子吸收法)无显著性差异,线性范围0~21ng/mL,检出限0.59ng/mL,RSD<3%(n=7)。
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| 关 键 词： | 二次微分电位溶出法 食品 污染 铅 |
| 文章编号： | 1001-8581（2007）08-0106-02 |
| 收稿时间： | 2007-04-17 |
| 修稿时间： | 2007-04-17 |
Determination of Pb in Food by Quadratic Differential Potentiometric Stripping Method |
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| LIU Hong-wei,WU Ji,LI Xiang-li,LU Wei.Determination of Pb in Food by Quadratic Differential Potentiometric Stripping Method[J].Acta Agriculturae Jiangxi,2007,19(8):106-107,110. |
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| Authors: | LIU Hong-wei WU Ji LI Xiang-li LU Wei |
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| Institution: | Henan Engineering Research Center of Food Quality and Safety Control, Zhengzhou 450002, China |
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| Abstract: | A method for determination of trace amount of Pb in food by quadratic differential potentiometric stripping was set up by optimizing experimental parameter such as pH-value,accumulation potential,equilibrium potential and time.The result showed that the measurement result of the method had no significant difference as compared with that of GF-AAS method,the linearity range was 0~21 ng/mL,the detection limit was 0.59 ng/mL,RSD was less than 3%(n=7). |
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| Keywords: | Quadratic differential potentiometric stripping method Food Pollution Pb |
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