| KBrO3—KBr紫外分光光度法测定痕量水杨酸 |
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| 引用本文： | 孙衍华,杨景芝.KBrO3—KBr紫外分光光度法测定痕量水杨酸[J].分析科学学报,1999,15(2):143-146. |
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| 作者姓名： | 孙衍华 杨景芝 |
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| 作者单位： | 山东农业大学基础部 |
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| 摘 要： | 研究了ＨＣｌ溶液中ＫＢｒＯ３－ＫＢｒ紫外分光光度法测定水杨酸的条件，建立了测定痕量水杨酸的新方法。结果表明，在０．６ｍｏｌ／ＬＨＣｌ，３＊１０＾－５ｍｏｌ／ＬＫＢｒＯ３，５＊１０＾－４ｍｏｌ／ＬＫＢｒ，６＊１０＾－４ｍｏｌ／ｌＫＩ溶中测定水杨酸，其线性范围为０．２－４．０ｍｇ／Ｌ，表观摩尔吸光系数为１．９＊１０＾－４Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，Ｓａｎｄｅｌｌ为７．３μｇ／ｃｍ＾２。ｓｇ ｉｆ ｅ
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| 关 键 词： | 紫外分光光度法 水杨酸 测定 |
Determination of Trace Salicylic Acid by KBrO3KBr and UV Spectrophotometry |
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| Sun Yanhua,Yang Jingzhi,Yin Hongzong,Qu Xiangjin.Determination of Trace Salicylic Acid by KBrO3KBr and UV Spectrophotometry[J].Journal of Analytical Science,1999,15(2):143-146. |
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| Authors: | Sun Yanhua Yang Jingzhi Yin Hongzong Qu Xiangjin |
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| Abstract: | In this paper,a new method for the determination of trace salicylic acid was established. The condition for the determination of trace salicylic acid by KBrO3KBr and UV spectrophotometry in the HCl solution were studied.It is shown that the linear range, apparent molar absorptivity and Sandell are 0.204.0mg/L, 1.9104Lmol-1cm-1and 7.3g/cm2, respectively, for the determination of salicylid in 0.6mol/L HCl, 310-5mol/L KBrO3,510-4mol/L KBr, 610-4mol/L KI solution. This method has been used to determine salicylic acid in ethanol solution of compound benzoic acid with satisfactory results. |
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| Keywords: | KBrO3KBr UV spectrophotometry I2 Trace salicylic acid |
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