| 用二次微分电位溶出法测定蔬菜中痕量铅 |
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| 引用本文： | 李向力,章建军,朱海华.用二次微分电位溶出法测定蔬菜中痕量铅[J].安徽农业科学,2007,35(11):3341-3341,3372. |
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| 作者姓名： | 李向力 章建军 朱海华 |
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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： | 建立了二次微分电位溶出法测定蔬菜中铅含量的新方法,优化了试验条件,如pH值、电沉积电位、平衡电位等.结果表明,铅的线性测定范围为O～160ng,相关系数r=0.9999,铅的检出限为O.59ng/ml.该法测定蔬菜中铅含量的结果与石墨原子吸收法在0.05水平上无差异.
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| 关 键 词： | 二次微分电位溶出法 蔬菜 铅 |
| 文章编号： | 0517-6611（2007）11-03341-01 |
| 收稿时间： | 2007-01-12 |
| 修稿时间： | 2007-01-12 |
Determination of Trace Lead in Vegetables by Quadratic Differential Potentiometric Stripping Analysis |
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| LI Xiang-li ,et al.Determination of Trace Lead in Vegetables by Quadratic Differential Potentiometric Stripping Analysis[J].Journal of Anhui Agricultural Sciences,2007,35(11):3341-3341,3372. |
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| Authors: | LI Xiang-li |
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| Institution: | Engineering Research Center of Food Quality Safety Control of Henan Province, Zhengzhou, Henan 450002 |
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| Abstract: | A new method of detecting the trace lead in vegetables by quadratic differential potentiometric stripping was established.Experimental parameters were optimized such as pH values,accumulation potential and equilibrium potential.The peak data were linear with the concentration in the range from 0 ng to 160 ng.The detection limit was 0.59 ng/mL.Result of this method had no significant difference with that of GF-AAS. |
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| Keywords: | Quadratic differential potentiometric stripping analysis Vegetables Pb |
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