【求助】(ok)请帮忙查一篇英文文献，谢谢

skyzhang521 2009/01/27

ok [img]https://www.instrument.com.cn/bbs/images/affix.gif[/img][url=http://www.instrument.com.cn/bbs/download.asp?ID=130475]Single-drop microextraction with in-microvial derivatization for the determination of haloacetic acids in water sample by gas chromatography–mass spectrometry[/url]