摘要
采用全真空脱气-气相色谱法测定绝缘油中C_3H_8和C_3H_6的含量。应用全真空脱气技术将溶解在绝缘油样品中的气体从绝缘油样品中分离,再用Propack Q色谱柱和5A分子筛色谱柱将待测气体分离,氢火焰检测器检测。C_3H_8和C_3H_6的体积分数在一定范围内与其对应的峰面积呈线性关系,其检出限依次为0.33,0.29μL·L^(-1)。以空白样品为基体进行加标回收试验,C_3H_8的回收率为92.1%~106%,C_3H_6的回收率为94.3%~108%。方法用于绝缘油样品的分析,C_3H_8和C_3H_6测定值的相对标准偏差(n=6)依次为6.8%,3.2%。
CA2 was applied to the determination of C3H8 and C3H6 in insulating oil with full vacuum degassing. The gases dissolved in the sample of insulating oil were separated from the sample by full vacuum degassing technology. The analytes were separated on Propack Q chromatographic column and 5A molecular sieve chromatographic column, and detected by FID. Linear relationships between values of peak area and volume fraction of C3 Ha and Ca H6 were kept in definite ranges, with detection limits of 0. 33, 0.29 μL·L^-1 , respectively. On the base of blank sample, test for recovery was made by standard addition method values of recovery of C3 H8 and C3 H6 were in the ranges of 92. 1%-106% and 94. 3% analysis of samples of insulating oil, giving values respectively. 108%, respectively. The proposed method was applied to the of RSDs （n=6） of C3H8 and Call6 of 6. 8% and 3. 2%, Ca H6 ; full vacuum degassing
作者
邓先钦
潘莹
熊鸣翔
厉敏宪
彭伟
徐鹏
DENG Xianqin;PAN Ying;XIONG Mingxiang;LI Minxian;PENG Wei;XU Peng(State Grid Shanghai Electric Power Research Institute,Shanghai 200437,China;State Grid Shanghai South Power Supply Company,Shanghai 201100,China)
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2018年第8期927-931,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
