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,辽宁抚顺113001

出　　处：《现代科学仪器》2007年第5期110-112,共3页Modern Scientific Instruments

摘　　要：在pH为8.3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ε_(570)=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 - zinc 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 - zinc 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 e570 = 9.1 × 10^4L · 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 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]