主题：【已应助】请帮忙查几篇英文文献，谢谢

1、【标题】Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables
【文献出处】Talanta, Volume 74, Issue 4, 15 January 2008, Pages 599-604
【作者】Maosheng Zhang, Jiarong Huang, Changlin Wei, Binbin Yu, Xiaoqing Yang and Xi Chen 
2、【标题】Ultrasonication followed by single-drop microextraction combined with GC/MS for rapid determination of organochlorine pesticides from fish
【文献出处】Journal of Separation Science
Volume 31, Issue 2, Date: February 2008, Pages: 380-386
【作者】Kamlesh Shrivas, Hui-Fen Wu

3、【标题】Microwave-assisted headspace single-drop microextration of chlorobenzenes from water samples
【文献出处】Analytica Chimica Acta, Volume 592, Issue 1, 29 May 2007, Pages 9-15
【作者】Lorena Vidal, Claudia E. Domini, Nuria Grané, Elefteria Psillakis and Antonio Canals 
4、【标题】An ionic liquid as a solvent for headspace single drop microextraction of chlorobenzenes from water samples
【文献出处】Analytica Chimica Acta, Volume 584, Issue 1, 12 February 2007, Pages 189-195
【作者】Lorena Vidal, Elefteria Psillakis, Claudia E. Domini, Nuria Grané, Frank Marken and Antonio Canals