摘要
建立了氧弹燃烧-离子色谱法测定油基切削液中卤素的分析方法。通过对氧弹燃烧装置条件优化,采用胶囊称取0.2g样品,充氧压力2.5 MPa,吸收液20mL,静置吸收时间20min。用离子色谱法测定吸收液中F-、Cl-、Br-的含量,结果表明,该方法定量检测限为5mg/kg^9mg/kg,在0.02mg/L^0.40mg/L线性范围良好,相关系数在0.9993~0.9996之间,精密度为3.6%~9.8%。不同浓度加标回收率在93.3%~104.0%之间,该方法快速、准确、回收率高,重复性好,能够满足对切削液质量控制的需求。
An oxygen bomb analytical method ion chromatography was established. The oxygen for determination of halogen in oil based cutting fluid by bomb combustion conditions were optimized and the re- sults were as follows： 0.2g sample weighed using capsule was adopted. The oxygen pressure was 2.5 MPa while the volume of the absorption liquid was 20mL with a static absorption time of 20min. The concentrations of F-, CI- and Br- in the absorption liquid were determined by ion chromatography. The results showed that the detection limits of the method were within 5mg/kg-9 mg/kg. The linear range was 0.02mg/L-0.40mg/L with favorable linear relationship, and the correlative coefficients were within 0. 9993-0. 9996. The relative standard deivations were in the range of 3.6%--9.8%. The recoveries with different concentrations were between 93.3% and 104. 0%. It was a rapid and accurate method with high recovery and good repeatability, which can satisfy the quality control requirement of cutting fluid.
作者
吴志刚
曹璨
Wu Zhigang;Cao Can(Liaoning Analysis Science Academe,Shenyang 110015,China)
出处
《分析仪器》
CAS
2018年第4期42-46,共5页
Analytical Instrumentation
基金
辽宁省自然科学基金项目(20170540481)
关键词
切削液
氧弹燃烧
离子色谱
卤素
Cutting fluid
Oxygen bomb combustion
Ion chromatography
Halogen
