| 分光光度法同时测定水中邻苯二甲酸和邻苯二甲酸二甲酯 |
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| 引用本文： | 颜文红,叶常明.分光光度法同时测定水中邻苯二甲酸和邻苯二甲酸二甲酯[J].环境化学,1995,14(2):145-150. |
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| 作者姓名： | 颜文红 叶常明 |
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| 作者单位： | 中国科学院生态环境研究中心!北京100085 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文用双波长等吸收紫外分光光度法，同时测定水中邻苯二甲酸（ＰＡ）和邻苯二甲酸二酯（ＤＭＰ）的含量，实验表明，ＤＭＰ和ＰＡ在１ｍｇ／ｌ到５０ｍｇ／ｌ的浓度范围内，对于波长为２１６，２３７．６，２６６，２９２ｎｍ的吸收均满足比尔吸收定律，迭加性令人满足，分析方法的回收率在ＤＭＰ与ＰＡ含量比例相差较小时，其值接近１００％。在相差超过９倍时，通过合理的校正，回收率也能达到９０％－１１０％，回收率受Ｎａ＾＋
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| 关 键 词： | 分光光度法 邻苯二甲酸 DMP 水 测定 |
SIMULTANEOUS DETERMINATION OF PHTHALIC ACID AND DIMETHYL PHTHALATE BY DUAL-WAVELENGTH SPECTROPHOTOMETRY |
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| Yan Wenhong Ye Changming.SIMULTANEOUS DETERMINATION OF PHTHALIC ACID AND DIMETHYL PHTHALATE BY DUAL-WAVELENGTH SPECTROPHOTOMETRY[J].Environmental Chemistry,1995,14(2):145-150. |
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| Authors: | Yan Wenhong Ye Changming |
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| Abstract: | The method of dual-wavelength spectrophotometry was used to simultaneously determine concentrations of phthalic acid (PA)and dimethyl phthalate(DMP)in aqueous systems. The concentration ranges of PA and DMP were from 1 mg/1 to 50 mg/1. The absorptions of the two substances at four wavelengthes were totally fitted by Beer's Law. Their recovery ratioes were from' 97. 77% to 105. 6%. Both Na+ and Cl- hardly affected the results, while pH value had significant impact on the method. The method will be used in further research for kinetic hydrolysis process of DMP. |
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| Keywords: | dual-wavelength spectrophotometry phthalice acid dimethyl phthalate |
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