Analysis of zinc dialkyl dithiophosphates by nonaqueous capillary electrophoresis and application to lubricants

Autor:	Keith D. Bartle, K. A. Mccormack, D. J. Abbott, V. R. A. Thibon
Rok vydání:	1999
Předmět:	Tetramethylammonium chemistry.chemical_classification Mechanical Engineering Inorganic chemistry chemistry.chemical_element Filtration and Separation Zinc chemistry.chemical_compound Ammonium hydroxide Capillary electrophoresis chemistry Methanol Acetonitrile Alkyl Tetrahydrofuran
Zdroj:	Journal of Microcolumn Separations. 11:71-80
ISSN:	1520-667X 1040-7685
DOI:	10.1002/(sici)1520-667x(1999)11:1<71::aid-mcs9>3.0.co;2-z
Popis:	Capillary electrophoresis has been successfully applied to the separation of four different commercial zinc dialkyldithiophosphate (ZDDP) mixtures and to the analysis of the ZDDP in fresh and used lubricating oils. Nonaqueous systems composed of methanol, tetrahydrofuran, and acetonitrile with tetraethylammonium, tetramethylammonium, or ammonium hydroxide and acetic acid as buffer additives were employed to separate the metal complexes according to the different hydrocarbon chain lengths and structures of the alkyl substituents. ©1999 John Wiley & Sons, Inc. J Micro Sep 11: 71–80, 1999
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6943bef20df9c55aaf23c76340fd987e https://doi.org/10.1002/(sici)1520-667x(1999)11:1<71::aid-mcs9>3.0.co Zobrazit plný text záznamu Plný text