主题：【已应助】请帮忙查几篇英文文献，谢谢

【序号】：1
【作者】：Adalberto Menezes Filho, Fábio Neves dos Santos and Pedro Afonso de P. Pereira
【题名】：Development, validation and application of a method based on DI-SPME and GC–MS for determination of pesticides of different chemical groups in surface and groundwater samples
【期刊】：Microchemical Journal,
【年、卷、期、起止页码】：Volume 96, Issue 1, September 2010, Pages 139-145

【序号】：2
【作者】：M. Nocentini, C. Focardi and M. Fortini   
【题名】：Single laboratory validation and uncertainty estimation of multiresidues method for determination of pesticides in vegetables and fruits by using QuEChERS sample extraction and GC–MS
【期刊】：Toxicology Letters
【年、卷、期、起止页码】：Volume 196, Supplement 1, 17 July 2010, Page S325

【序号】：3
【作者】：X. Yang, H. Zhang, Y. Liu, J. Wang, Y.C. Zhang, A.J. Dong, H.T. Zhao, C.H. Sun and J. Cui 
【题名】：Multiresidue method for determination of 88 pesticides in berry fruits using solid-phase extraction and gas chromatography–mass spectrometry: Determination of 88 pesticides in berries using SPE and GC–MS
【期刊】：Food Chemistry
【年、卷、期、起止页码】：Volume 127, Issue 2, 15 July 2011, Pages 855-865