| 示波极谱法测定罐头食品中的锡 |
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| 引用本文： | 邹晓莉,李敏,蒲永红. 示波极谱法测定罐头食品中的锡[J]. 四川大学学报(医学版), 2003, 34(3): 580-581 |
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| 作者姓名： | 邹晓莉 李敏 蒲永红 |
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| 作者单位： | 1. 四川大学华西公共卫生学院,卫生检测学教研室,成都,610041
2. 四川省卫生管理干部学院,卫生检测教研室 |
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| 摘 要： | 目的：建立测定罐头食品中锡的示波极谱测定法。方法：利用锡在硫酸(H2SO4)-碘化钾(KI)-抗坏血酸(Vit C)-偏钒酸铵(NH4VO3)体系中有一灵敏的极谱波，对几种罐头食品中的锡进行测定。结果：锡浓度在O～2．Oμg／ml时线性良好，方法：检出限为O．12μg／L，相对标准偏差(RSD)在4．22％～8．33％之间；样品平均回收率为94．7％～112．O％。将本法与食品国家卫生标准方法比较，结果令人满意。结论：本法简便、快速、灵敏，测定干扰少，可用于实际样品的测定。
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| 关 键 词： | 示波极谱法 测定 罐头食品 锡 |
| 修稿时间： | 2002-10-20 |
Determination of Tin in Canned Foods with Oscillographic Polarography |
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| Zou Xiaoli ,Li Min,Pu Yong- hong. Determination of Tin in Canned Foods with Oscillographic Polarography[J]. Journal of Sichuan University. Medical science edition, 2003, 34(3): 580-581 |
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| Authors: | Zou Xiaoli Li Min Pu Yong- hong |
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| Affiliation: | Department of Health Technology, West China School of Public Health, Sichuan University, Chengdu 610041, China. |
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| Abstract: | OBJECTIVE: To develop an oscillographic polarography method for determining the concentration of tin in canned foods. METHODS: Because the sensitive polarography wave of tin can be obtained in the system of H2SO4-KI-VitC- NH4VO3, the tin content of several canned foods was analyzed. RESULTS: The detection limit was 0.12 microgram/L. The calibration graph of Sn was linear from 0 to 2.0 micrograms/ml, and the relative standard deviation ranged from 4.22% to 8.33%. The recoveries were 94.7%-112.0%. The samples were analyzed by the proposed method and standard method. The results of the two methods agreed well. CONCLUSION: This method is simple, quick and almost free from interference, and it is available for use in analysis of the canned sample. |
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| Keywords: | Oscillogaphic polarography Canned foods Tin |
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