快原子轰击质谱法研究烷基苯磺酸钙和二烷基二硫代磷酸锌
Identification of Calcium Alkylbenzenesulfonates and Zinc Dithiophosphates Using FABMS
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摘要: 本文首次用快原子轰击质谱(FABMS)鉴定了润滑油金属清净剂中碱性、高碱性烷基苯磺酸钙和抗氧腐剂二烷基二硫代磷酸锌;研究了不同基质对添加剂离子流强度的影响;并探讨了用FABMS对润滑油中含量低于2％经过成焦板模拟试验后的二烷基二硫代磷酸锌的鉴定方法。Abstract: In this artical fast atom bombardment mass spectrometry was first used to identify lubricating oil additives, based and overbased calcium alkylbenzenesulfonates (BCAS and OCAS) and zinc dithiophosphates (ZDP). The influence of matrices on ion intensity was studied. The identification of ZDP of low concentration (2％) tested in lubricating oil was also discussed.
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