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
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(H2,CO,CH4,CO2,C2H4,C2H6及C2H2),其检出限(3S/N)在0.1×10-6μL·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.
交流脉冲放电
气相色谱法
变压器油中溶解气体
微水分
Alternating current pulse discharge
Helium ionization detector
Gas chromatography
Dissolved gases in transformer oil
Moisture
Abstract
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 bi-column switching system.Seven dissolved gases in transformer oil (i.e.H2,CO,CH4,CO2,C2H4,C2H6 and C2H2) as well as the moisture content were determined.Detection limits (3S/N) obtained for these gases were lower than 0.1×10-6μL·L-1.
中图分类号 O657.71
所属栏目 工作简报
基金项目
收稿日期 2007/6/29
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备注韩毓旺(1971-),男,山西介休人,博士,副教授,研究方向为物理化学、分析化学.
引用该论文: HAN Yu-wang,HUANG Jian-yuan,ZHANG Dong-ming. Application of AC Pulse Discharge Helium Ionization Detector to GC Determination of Dissolved Gases and Moisture in Transformer Oil[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(11): 1099～1102
韩毓旺,黄建元,张东明. 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[J]. 理化检验－化学分册, 2008, 44(11): 1099～1102
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【3】Wentworth W E,Huamin Cai,Stanley Stearns.Pulsed discharge helium ionization detector Universal detector for inorganic and organic compounds at the low picogram level[J].J Chromatography A,1994,688:135-152．
【4】Forsyth D S.Pulsed discharge detector: theory and applications[J].Journal of Chromatography A,2004,1050:63-68．
【5】欧庆瑜,梁冰,李菊白.脉冲放电检测器[J].分析测试技术与仪器,2001,7(1):1-7．
【6】田肖丹,杨文军,刘森,等.气相色谱用氦直流等离子体离子化检测器的研究[J].化学学报,1996,54:691-696．
【7】Tian Xiaodan,Yang Wenjun,Yu Aimin,et al.Studies on a helium ionization detector for gas chromatography[J].Microchemical Journal,1995,52:139-145．
【8】梁冰,李辰,李瑞玉,等.脉冲放电氦光离子化检测器分析有机化合物的性能研究[J].分析化学,2004,32(4):546-550．
【9】Hopkins J R,Still T,Al-Haider S,et al.A simplified apparatus for ambient formaldehyde detection via GC-pHID [J].Atmospheric Environment,2003,37:2557-2565．
【10】Mark T Roberge,John W Finley,Henry C,et al.Evaluation of the pulsed discharge helium ionization detector for the analysis of hydrogen and methane in breath[J].Journal of Chromatography A,2004,1027:19-23．
【11】Casari C,Andrews A R J.Application of solvent microextraction to the analysis of amphetamines and phencyclidine in urine[J].Forensic Science International,2001,120:165-171．
【12】Johannes Bernardus Laurens,Johannes Petrus de Coning,John McNeil Swinley.Gas chromatographic analysis of trace gas impurities in tungsten hexafluoride[J].Journal of Chromatography A,2001,911:107-112．
【13】Robert Wenske.Single GC detector analysis of dissolved gases in transformer oil,thermo quest CE instruments[J].Technical Report,1998,9135:2-4．
【14】Jalbert J,Gilbert R,Tetreault P.Simultaneous determination of dissolved gases and moisture in mineral insulating oils by static headspace gas chromatography with helium photoionization pulsed discharge detection[J].Anal Chem,2001,73:3382-3391．
【15】RAE Systems Inc.Alternating current discharge ionization detector: PCT,WO 01/20645 A2[P].2001-03-22．
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