| 阿司匹林的极谱分析 |
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| 引用本文： | 李清龙,曹成杰,冯颖颖.阿司匹林的极谱分析[J].商丘师范学院学报,2012(6):67-70. |
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| 作者姓名： | 李清龙 曹成杰 冯颖颖 |
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| 作者单位： | 河南皇沟酒业有限责任公司 |
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| 摘 要： | 建立阿司匹林片含量测定的电化学分析方法.采用LK98BII微机电化学分析系统和MODEL JP-303极谱分析仪对阿司匹林进行了线性﹑回收率﹑精密度以及溶液稳定性等实验;用氧化剂存在时阿司匹林产生的极谱催化波提高分析灵敏度,用线性扫描极谱法实现快速测定.结果在KH2PO4-Na2HPO4支持电解质中,阿司匹林产生一个催化氢波.加入H2O2后,该催化氢波被催化,峰电流增加约50倍,峰电位基本不变,产生一个较灵敏的平行催化氢波.二阶导数还原波的峰电流ip″与阿司匹林浓度在4.0×10-7～3.0×10-6mol/L范围内呈良好线性关系,检出限为2.0×10-7mol/L.结果表明该方法简便,快捷,专属性强,结果准确可靠.
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| 关 键 词： | 阿司匹林片 线性扫描极谱法 平行催化氢波 |
Analysis of aspirin by polarography |
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| LI Qinglong,CAO Chengjie,FENG Yingying.Analysis of aspirin by polarography[J].Journal of Shangqiu Teachers College,2012(6):67-70. |
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| Authors: | LI Qinglong CAO Chengjie FENG Yingying |
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| Institution: | (Henan Huang Ditch Liquor Limited Liability Company,Yongcheng 476600,China) |
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| Abstract: | Linear sweep polarography is used to determine aspirin tablets in this paper.The catalytic hydrogen wave of aspirin was found at ca.-0.7V(vs,SCE) in 0.08 mol/L KH2PO4-Na2HPO4 buffer at pH 5.5.When 1.0×10-2 mol/L H2O2 was present,the current increases by 50 times while the peak potential is unchanged,indicating a more sensitive parallel catalytic hydrogen wave.The second-order derivative peak current shows good linear relationship with aspirin concentrations in the range of 4.0×10-7~3.0×10-6 mol/L.The detection limit is 2.0×10-7 mol/L.The results show that our method is simple,speed-fast,accurate and effective. |
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| Keywords: | tablets linear sweep polarography parallel catalytic hydrogen wave |
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