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气相色谱法测定农残前处理方法的优化 被引量:4
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作者 罗俊霞 王毅红 +3 位作者 刘青 宗珊颖 李莺 赵建波 《长江蔬菜》 北大核心 2008年第06X期41-43,共3页
用气相色谱法测定蔬菜农药残留时,在NaCl的使用方式上把NY/T761-2004方法稍作变动,测定没有变动和变动后两种方式下的农药的添加回收率进行比较。试验结果,NaCl的使用方式稍作变动后,对所添加的农药的回收率没有显著影响,农药的添加回... 用气相色谱法测定蔬菜农药残留时,在NaCl的使用方式上把NY/T761-2004方法稍作变动,测定没有变动和变动后两种方式下的农药的添加回收率进行比较。试验结果,NaCl的使用方式稍作变动后,对所添加的农药的回收率没有显著影响,农药的添加回收率和相对标准偏差均符合农残分析要求。 展开更多
关键词 气相色谱法 前处理 氯化钠 添加回收率
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Determination of constituents of essential oil from Angelica sinensis by gas chromatographymass spectrometry 被引量:13
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作者 吴名剑 孙贤军 +3 位作者 戴云辉 郭方遒 黄兰芳 梁逸曾 《Journal of Central South University of Technology》 EI 2005年第4期430-436,共7页
Gas chromatographymass spectrometry (GC-MS) coupled with chemometric resolution upon two- dimensional data was employed to analyze the constituents of essential oils of Angelica sinensis. Constituents in essential oil... Gas chromatographymass spectrometry (GC-MS) coupled with chemometric resolution upon two- dimensional data was employed to analyze the constituents of essential oils of Angelica sinensis. Constituents in essential oils of Angelica sinensis root were identified by GC-MS with the help of subwindow factor analysis (SFA) method resolving two-dimensional original data into mass spectra and chromatograms. 76 of 97 separated constituents in essential oil of Angelica sinensis root were identified and quantified, and they account for about 91.36% of the total content. The results show that ligustilide, butylene phthalide, 2-methoxy-4-vinylphenol, carvacrol, allo-ocimene,2,6,6-trimethylbicyclo-[3,1,1]hept-2-ene are the main constituents in essential oil of Angelica sinensis root. 展开更多
关键词 Angelica sinensis CHEMOMETRICS gas chromatography- mass spectrometry subwindow factor analysis
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