%0 Conference Proceedings %T Separation and Determination of Benzene, Toluene, Ethylbenzene and O-Xylene Compounds in Water Using Directly Suspended Droplet Microextraction coupled with Gas Chromatography-Flame Ionization Detector %A Sarafraz Yazdi, Ali %A امير حسين اميري %J 32th International Symposium on Capillary Chromatography and 5th GC×GC Symposium %D 2008