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Did you mean guo xiang yun (23 results)?
A multi-residue method for simultaneous determination of 74 pesticides in Chinese material medica using modified QuEChERS sample preparation procedure and gas chromatography tandem mass spectrometry.
Liu XQ, Li YF, Meng WT, Li DX, Sun H, Tong L, Sun GX. Liu XQ, et al. Among authors: sun gx. J Chromatogr B Analyt Technol Biomed Life Sci. 2016 Mar 15;1015-1016:1-12. doi: 10.1016/j.jchromb.2016.01.029. Epub 2016 Feb 1. J Chromatogr B Analyt Technol Biomed Life Sci. 2016. PMID: 26894850
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