| 分光光度法测定方酸 |
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| 引用本文： | 王莉萍,韩杰,张春光,狄俊伟.分光光度法测定方酸[J].光谱实验室,2007,24(3):296-298. |
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| 作者姓名： | 王莉萍 韩杰 张春光 狄俊伟 |
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| 作者单位： | 苏州大学化学化工学院,江苏省苏州市,215123 |
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| 摘 要： | 研究了方酸与FeCl3体系显色反应的最佳条件,建立了分光光度法测定方酸的方法.在pH2.1的HCl-HAc溶液中,有色络合物在505nm处有最大吸收,方酸含量在0.05-1.0mmol/L范围内呈良好的线性关系,其线性相关系数为0.9995,检出限为0.005mmol/L.该方法仪器简单,操作方便,应用于样品中方酸的测定结果令人满意.
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| 关 键 词： | 方酸 分光光度法 铁(Ⅲ) |
| 文章编号： | 1004-8138(2007)03-0296-03 |
| 修稿时间： | 2006-11-20 |
Spectrophotometric Determination of Squaric Acid |
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| WANG Li-Ping,HAN Ji,ZHANG Chun-Guang,DI Jun-Wei.Spectrophotometric Determination of Squaric Acid[J].Chinese Journal of Spectroscopy Laboratory,2007,24(3):296-298. |
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| Authors: | WANG Li-Ping HAN Ji ZHANG Chun-Guang DI Jun-Wei |
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| Institution: | College of Chemistry and Chemistry Engineering, Suzhou University, Suzhou, Jiangsu 215006, P. R. China |
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| Abstract: | The reaction conditions of squaric acid and FeC13 color system were investigated and the spectrophotometric method for determination of squaric acid was developed. At pH 2.1 HCl-HAc, the colored complex exhibits maximum absorption at 505nm,and the linear range for determination of squaric acid is 0. 05--1.0mmol/L with a correlation coefficient of 0. 9995. The detection limit of the proposed method is 0. 005mmol/L. This method is simple and convenient,and has been applied to the determination of squaric acid in samples with satisfactory results. |
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