Separation of zinc dialkyldithiophosphates in lubricating oil additives by normal-phase high-performance liquid chromatography

被引：23

作者：

Lambropoulos, N

Cardwell, TJ

Caridi, D

Marriott, PJ

机构：

[1] LA TROBE UNIV,SCH CHEM,CTR SCI INSTRUMENTAT,BUNDOORA,VIC 3083,AUSTRALIA

[2] ROYAL MELBOURNE INST TECHNOL,DEPT APPL CHEM,MELBOURNE,VIC 3001,AUSTRALIA

来源：

JOURNAL OF CHROMATOGRAPHY A | 1996年 / 749卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

lubricating oil additives; oils; mobile phase composition; zinc dialkyldithiophosphates; dialkyldithiophosphates;

D O I：

10.1016/0021-9673(96)00416-5

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Eleven zinc dialkyldithiophosphates have been synthesised and their mixtures separated by normal-phase HPLC on a 5-mu m silica column. Dichloromethane or heptane-based eluents containing alkylamine (less than or equal to 0.4%) and acetic acid in a volume ratio of 2:1 and 1% methanol were suitable for separation of mixtures of these metal complexes in commercial lubricating oil additives. In all cases tested, the zinc complexes eluted from the column without decomposition and there was no evidence for ligand-exchange reactions having taken place during synthesis or on the column.

引用

页码：87 / 94

页数：8

共 16 条

[1] BASIC ZINC DOUBLE SALTS OF O,O-DIALKYL HYDROGEN PHOSPHORODITHIOATES [J].