pH渐变光谱秩消失因子分析法测定混合物中的2,4-二硝基苯酚  

Determination of 2,4-Dinitrophenol in Mixtures by pH Changed Gradually Spectral Rank Annihilation Factor Analysis

作　　者：袁金涛[1] 廖力夫[1] 刘传湘[2] 杨静[1] 何博[1] 

机构地区：[1]南华大学公共卫生学院,湖南衡阳421001 [2]南华大学化学化工学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2007年第3期93-96,共4页Journal of University of South China：Science and Technology

摘　　要：建立了pH渐变光谱秩消失因子分析法测定混合物中2,4-二硝基苯酚的新方法.在本方法中,以向Britton-Robinson缓冲溶液中滴加氢氧化钠溶液的方式使溶液pH不断变化,通过记录多个pH点溶液的吸收光谱获得酸度-光谱双线性数据矩阵,再应用秩消失因子分析法计算混合物中2,4-二硝基苯酚的浓度.应用本方法对混合物样品中2,4-二硝基苯酚的进行了测定,结果满意.A new method for the determination of 2,4-dinitrophenol in mixtures by pH changed gradually spectral rank annihilation factor analysis has been developed.In the method described here,the pH of the Britton-Robinson buffer solution containing 2,4-dinitrophenol was changed gradually by adding sodium hydroxide solution into the solution.In this process,the spectrum of the solutin at different pH has been recorded and then the acidity-absorbance spectra matrix was obtained.Thus the concentration of 2,4-dinitroph...

关 键 词：2 4-二硝基苯酚 pH渐变光谱 秩消失因子分析法 混合物 

分 类 号：O657.3[理学—分析化学]