主题：【求助】（已应助）求助几篇英文文献，谢谢

1、【标题】Immersed single-drop microextraction–electrothermal vaporization atomic absorption spectroscopy for the trace determination of mercury in water samples
【文章出处】Journal of Hazardous Materials, Volume 165, Issues 1-3, 15 June 2009, Pages 353-358
【作者】Habib Bagheri, Mehrnoush Naderi
2、【标题】Determination of organochlorine pesticides in complex matrices by single-drop microextraction coupled to gas chromatography–mass spectrometry
【文章出处】Analytica Chimica Acta, Volume 638, Issue 1, 6 April 2009, Pages 29-35
【作者】Carol Cortada, Lorena Vidal, Sergio Tejada, Alicia Romo, Antonio Canals
3、【标题】Dynamic headspace time-extended helix liquid-phase microextraction
【文章出处】Journal of Chromatography A, Volume 1216, Issue 20, 15 May 2009, Pages 4347-4353
【作者】Sih-Pin Huang, Pai-Shan Chen, Shang-Da Huang
4、【标题】A new gas chromatography/mass spectrometry method for the simultaneous analysis of target and non-target organic contaminants in waters
【文章出处】Journal of Chromatography A, Volume 1216, Issue 18, 1 May 2009, Pages 4071-4082
【作者】M.J. Gómez, M.M. Gómez-Ramos, A. Agüera, M. Mezcua, S. Herrera, A.R. Fernández-Alba