摘要
本文考察了冲洗剂中强组分浓度、无机盐浓度和酸度对保留值的影响,结果表明在溶质的 lnk 与 C_b 间线性关系中不能包括 C_b=0时的实验点。同时还观察到线性回归的 a 值与C_b=0时实测的 lnk′值存在较好的线性关系,酸度对 k′值的影响较复杂;溶质的保留值随无机盐浓度的增加而增大。
Mixtures of single- and multiple-substituted phenylamine and naphthylamine sulphonic acids are the important intermediates in the synthesis of dyestuffs.The linear regression analysis according the equation Ink’=a+cC_b with taking and not taking into account of experimental data at C_b=0 was carried out.The regression coefficient in former situation is much lower than that in latter situation.A linear relationship between para- meter a from regression analysis and parameter a calculated from k’at C_b=0 was observed. The effects of acidity on k’is complex,which showed that the negatively,natutally and positively charged solutes make a contribution to retention at the same time.The retention value increases with concentration of the inorganic salt,but linear regression analysis according to Horvath’s equation is not good.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1991年第10期1212-1214,共3页
Chinese Journal of Analytical Chemistry
关键词
氨基苯磺酸
氨基萘磺酸
反相色谱
Reversed-phase liquid chromatography
Variation of capacity factors
Phenylamine and naphthylamine sulphonic acids
