应用交流脉冲氦离子化检测器于气相色谱法测定变压器油中溶解气及水分  

Application of AC Pulse Discharge Helium Ionization Detector to GC Determination of Dissolved Gases and Moisture in Transformer Oil

作　　者：韩毓旺[1] 黄建元[1] 张东明[1] 

机构地区：[1]南京工业大学理学院应用化学系,南京210009

出　　处：《理化检验（化学分册）》2008年第11期1099-1102,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：用自制的交流脉冲氦离子化检测器于气相色谱法测定变压器油中溶解气及水分。该检测器采用双向交流脉冲高压电源放电,避免了阳极溅射消耗和阴极污染问题。在未加任何净化、氦气纯度99.999%情况下,用气相色谱法测定了变压器油中7种溶解气体(H_2,CO,CH_4,CO_2,C_2H_4,C_2H_6及C_2H_2),其检出限(3S/N)在0.1×10^(-6)μL·L^(-1)以下。检测器与程序升温、双柱切换等操作过程配合良好,而且可同时检测油中微水。Performance of a self-made alternating current pulse discharge helium ionization detector （ACPDHID） and its application to the GC determination of dissolved gases and moisture in transformer oil were described. By discharging with a two-way AC pulse high voltage power source, anode sputtering and cathode contamination were avoided. Pure helium （purity 99. 999%）, without any additional purification, was used in the detection. The ACDHID was found to be working in good coordination with the temperature elevation programming and the hi-column switching system. Seven dissolved gases in transformer oil （i. e. H2 ,CO,CH4 ,CO2 ,C2 H4 ,C2 H6 and C2 H2 ） as well as the moisture content were determined. Detection limits （3S/N） obtained for these gases were lower than 0. 1 × 10^-6 μL · L^-1.

关 键 词：氦离子化检测器 交流脉冲放电 气相色谱法 变压器油中溶解气体 微水分 

分 类 号：O657.71[理学—分析化学]