%0 Journal Article
%T Determination of Partition Coefficient of Dissolved Gases in Transformer Oil Using Phase Ratio Variation Method and Static Headspace Gas Chromatography<br>改变相比/顶空气相色谱法测定变压器油中溶解气体的分配常数
%A ZHAO Jinghong
%A WANG Hailong
%A LIU Wenmin
%A ZHOU Yansheng
%A GUAN Yafeng
%A <br>赵景红
%A 王海龙
%A 刘文民
%A 周延生
%A 关亚风
%J 色谱
%D 2004
%I 
%X The partition coefficients of dissolved gases in transformer oil were determined using a phase ratio variation method and static headspace gas chromatography (GC). A pressure balancing and gas volume-metering device was connected to the vent of a sample loop on a six-port injection valve of the GC. The gas phase sample from the headspace vial of 25 mL was transferred to an 80 microL sample-loop through a fused silica capillary of 0.53 mm i.d., and then separated and determined quantitatively by GC. A 2 m x 1 mm i.d. GDX502 micro-packed column was used for the separation. Five different gas-liquid volume ratios in the headspace vials were measured at different equilibrium concentrations. The partition coefficients of hydrocarbon gases including methane, acetylene, ethylene, ethane and propane dissolved in transformer oil were determined by using linear regression analysis at 20 degrees C and 50 degrees C separately. The errors between the real values and regression values from experimental data were less than 4.14% except methane. Fundamental data for on-line measurement of dissolved gases in transformer oil are provided by GC.
%K static headspace gas chromatography
%K phase ratio
%K partition coefficient
%K dissolved gas analysis<br>静态顶空气相色谱
%K 相比
%K 分配常数
%K 溶解气体分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=11F2ED8CDABE89D8&yid=D0E58B75BFD8E51C&vid=BC12EA701C895178&iid=38B194292C032A66&sid=23104246A5FCFCEF&eid=E0F6F365E4766526&journal_id=1000-8713&journal_name=色谱&referenced_num=3&reference_num=12