摘要
建立了GC-MS法测定陶瓷片密封水嘴用润滑油脂中58种半挥发性有机物(SVOCs)的方法。润滑油脂样品通过异辛烷超声提取,离心过滤后用GC-MS在选择离子(SIM)模式下进行检测,外标法定量。结果表明:58种SVOCs在0.05~1.0 mg/L浓度范围内呈良好的线性关系,相关系数r均大于0.995,方法检出限为0.002~0.387 mg/kg,平均加标回收率为87.6%~108.0%,相对标准偏差(RSD,n=6)为1.4%~4.8%。该方法具有简单、高效、可靠性高等特点,能有效地对陶瓷片密封水嘴用润滑油脂中58种SVOCs进行定性定量分析。
A gas chromatography-mass spectrometry(GC-MS)method was developed for the determination of 58 semi-volatile organic compounds(SVOCs)in lubricants used for sealing water nozzles on ceramic tablets.The lubricating oil samples were extracted by isooctane ultrasound,filtered by centrifugation and detected by GC-MS in the mode of selective ion(SIM),and quantified by external standard method.The results showed that the 58 kinds of SVOCs showed good linear relationship in the concentration range of 0.05~1.0 mg/L with correlation coefficients(r)more than 0.995.The limits of detection of the method(MLODs)were in the range of 0.002 mg/kg^0.387 mg/kg.The average recoveries were in the range of 87.6%~108.0%,and the relative standard deviations were in the range of 1.4%~4.8%(RSD,n=6).This method is simple,rapid and high-reliability,which can be used for the qualitative and quantitative analysis of 58 kinds of SVOCs in the lubricating grease used for sealing water nozzle of ceramic sheet.
作者
温永汉
陈忆霞
高绮倩
区棋铭
余国枢
朱国军
黄雨琨
WEN Yong-han;CHEN Yi-xia;GAO Qi-qian;OU Qi-ming;YU Guo-shu;ZHU Guo-jun;HUANG Yu-kun(Guangdong Jiangmen Supervision Testing Institute of Quality and Metrology,Guangdong Jiangmen 529000,China)
出处
《广州化工》
CAS
2020年第24期96-99,110,共5页
GuangZhou Chemical Industry
关键词
润滑油脂
半挥发性有机物
气相色谱-质谱法
超声提取
crease
semi-volatile organic compounds
gas chromatography-mass spectrometry
ultrasonic extraction
