主题：【已应助】请帮忙查几篇英文文献，谢谢

【序号】：1
【作者】：Francisco Galán-Cano, Rafael Lucena, Soledad Cárdenas, Miguel Valcárcel 
【题名】：Ionic liquid based in situ solvent formation microextraction coupled to thermal desorption for chlorophenols determination in waters by gas chromatography/mass spectrometry
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 1229, 16 March 2012, Pages 48-54

【序号】：2
【作者】：D. Bratkowska, N. Fontanals, P.A.G. Cormack, F. Borrull, R.M. Marcé
【题名】：Preparation of a polar monolithic stir bar based on methacrylic acid and divinylbenzene for the sorptive extraction of polar pharmaceuticals from complex water samples
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 1225, 17 February 2012, Pages 1-7

【序号】：3
【作者】：Ina Kristiana, Cynthia Joll, Anna Heitz
【题名】：Analysis of halonitriles in drinking water using solid-phase microextraction and gas chromatography–mass spectrometry
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 1225, 17 February 2012, Pages 45-54

【序号】：4
【作者】：Ho-Sang Shin 
【题名】：Sensitive determination of bromate in ozonated and chlorinated water, and sea water by gas chromatography–mass spectrometry after derivatization
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 1223, 3 February 2012, Pages 136-141

【序号】：5
【作者】：Phillip Trefz, Sabine Kischkel, Dietmar Hein, Ellwood Sean James, Jochen K. Schubert, Wolfram Miekisch 
【题名】：Needle trap micro-extraction for VOC analysis: Effects of packing materials and desorption parameters
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 1219, 6 January 2012, Pages 29-38