分光光度法测定润滑油中的微量锌  

Spectrophotometric Method Determined Lubrication Oil Micro-Zine

作　　者：于大勇[1] 石元博[1] 刘金东[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,抚顺113001

出　　处：《现代科学仪器》2007年第2期92-94,共3页Modern Scientific Instruments

摘　　要：在pH为8．3的硼砂-盐酸缓冲溶液中，应用水杨基荧光酮（SAF）-溴化十六烷基三甲氨（CTMAB）显色体系测定润滑油中的微量元素锌，建立测定润滑油中微量锌的快速分析方法。通过一系列实验的考察，结果表明，含锌量在0-25μg／25mL内服从比尔定律，摩尔吸光系数为ε570=9．1×10^4L．mol^-1．cm^-1，线性范围为0—60μg／10mL，加标回收率为97．21％～101．1。实验方法简便、灵敏、准确。The micro - zine of the lubrication oil was determined by using CTMAB in borax - hydrochloric acid cushion solution whose pH value was 8.3, and setting up a quickly analytical method which determined micro - zine in lubrication oil. By studying with experiment, we found that the quantity of the zinc conformed to the beer law in the 0 -25 μg/25mL, the molar absorption coefficient was ε570 = 9.1×10^4 L. mol^-1. cm^-1, linear range was 0 - 60μg/10mL,and recoveries of standard addition were 97.21% - 101.1%. The method was convenient, sharp and accurate.

关 键 词：锌 水杨基荧光酮 SAF 分光光度法 润滑油 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]