[1]汪晖,金凤明,杨扬,等.差分脉冲溶出伏安法测定茶叶中的痕量铅[J].常州大学学报(自然科学版),2006,(01):28-30.
WANG Hui,JIN Feng-ming,YANG Yang,et al.Determination of Trace Lead in Tea by Differential Pulse
Stripping Voltammetry[J].Journal of Changzhou University(Natural Science Edition),2006,(01):28-30.
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差分脉冲溶出伏安法测定茶叶中的痕量铅(
)
常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]
- 卷:
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- 期数:
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2006年01期
- 页码:
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28-30
- 栏目:
-
- 出版日期:
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2006-02-25
文章信息/Info
- Title:
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Determination of Trace Lead in Tea by Differential Pulse
Stripping Voltammetry
- 作者:
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汪晖; 金凤明; 杨扬; 王文昌; 陈智栋
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江苏工业学院化学工程系, 江苏 常州 213016
- Author(s):
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WANG Hui; JIN Feng-ming; YANG Yang; WANG Wen-chang; CHEN Zhi-dong
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Department of Chemical Engineering, Jiangsu Polytechnic University, Changzhou 213016, China
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- 关键词:
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差分脉冲溶出伏安法 茶叶 汞膜电极 铅
- Keywords:
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differential pulse stripping voltammetry; tea; mercury film electrode; lead
- 分类号:
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Q 946. 91
- 文献标志码:
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A
- Abstract:
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A new method of determination of trace lead in tea has been developed. The content of lead was determined in 0. 1 mol/L HCl by differential pulse stripping voltammetry using thin film mercury on silver electrode as working electrode, and optimized the experiment conditions. The results showed that the peak current is well-proportioned to the concentration of lead in the range of 0.1-15 1-Lg/mL, the regres? sion equation is I=80. 46C+ 6. 794 (I: μA, C: μg/mL), the correlation coefficient is 0. 997 8, and the detection limit is 0. 01μg/mL. The veracity of this method was validated by determination of the standard tea, and the content of lead is in good agreement with the standard value. The new method introduced is simple and convenient with high sensitivity and little interference. It can be adapted to the determination of trace lead in tea with satisfactory results.
备注/Memo
- 备注/Memo:
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基金项目常州市科技局项目资助(2003019)
作者简介汪晖(1981一), 男, 山东德州人, 硕士研究生。
更新日期/Last Update:
2006-01-25