多波长高效液相色谱法同时检测对二甲苯及其氧化产物  

HPLC determination of p-xylene and its oxidation products with several ultraviolet wavelengths

作　　者：徐跞 何鹏程[1] 陈大伟 袁霞[1] Xu Luo , He Pengcheng, Chen Dawei , Yuan Xia(School of Chemical Engineering, Xiangtan University, Xiangtan Hunan 411105, China)

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《石油化工》2018年第8期861-866,共6页Petrochemical Technology

基　　金：国家自然科学基金资助项目(21776237)

摘　　要：使用配有二极管阵列检测器的多波长高效液相色谱仪同时检测对二甲苯及其氧化产物。实验结果表明,210 nm处检测对二甲苯和对甲基苯甲醇,239 nm处检测对甲基苯甲酸,242 nm处检测对苯二甲酸,250 nm处检测对甲基苯甲醛和对羧基苯甲醛。使用磷酸溶液和甲醇与乙腈混合物作为流动相进行梯度洗脱,回归方程的线性相关性均在0.999 1以上,回收率为98.59%~101.38%,相对标准偏差小于1.50%。High-performance liquid chromatography with a diode array detector was applied to the determination of p-xylene and its oxidation products with several ultraviolet wavelengths.The p-xylene and 4-methylbenzyl alcohol were detected at 210 nm,and p-toluic acid at 239 nm,terephthalic acid at 242 nm,and p-methyl benzaldehyde and 4-carboxybenzaldehyde at 250 nm.In addition,phosphoric acid solution,methanol and acetonitrile were used as the flow phase for gradient elution program.Relative coefficients for regression equation were greater than or equal to 0.999 1.Values of recovery of analytes found were in the range of 98.59% to 101.38%.Moreover,the relative standard deviation was less than 1.50%.

关 键 词：高效液相色谱 对二甲苯 氧化 对苯二甲酸 

分 类 号：TQ245.1[化学工程—有机化工]