排序方式: 共有9条查询结果,搜索用时 15 毫秒
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甲胺磷等有机磷农药残留的气相色谱分析 总被引:3,自引:0,他引:3
用气相色谱法,采用Rtx-1色谱柱,用氮磷检测器同时测定甲胺磷,氧化乐果,甲拌磷和甲基对硫磷在蔬果中的农药残留量,以上农药平均回收率为78.3%-86.5%,变异系数为3.6%-7.8%,方法准确,快速。 相似文献
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紫藤鲜花香气化学成分的研究 总被引:1,自引:0,他引:1
采用固相微萃取吸附采集紫藤(Wistariasinensis)花的香气成分,用色谱/质谱联用分析鉴定,并用GC/MS总离子流色谱峰的峰面积进行归一化定量分析紫藤鲜花的香气成分,鉴定出2十一酮21.22%、2壬酮20.09%、3[4,8二甲基3,7壬二烯]呋喃10.32%、2十三酮8.21%、芳樟醇7.5%、β石竹烯6.02%、反式罗勒烯5.41%、草蒿脑4.27%、反式茴香脑3.91%、反,反2,4辛二烯1醇乙酸酯1.65%、α蒎烯氧化物1.32%、2十五酮1.14%、大根香叶烯D1.14%和4丙酮基环庚酮1.11%等32种化合物。固相微萃取气相色谱/质谱法是一种可用于鲜花香气成分分析的简单可行的分析方法。 相似文献
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The headspace constituents released from fresh flowers of lilium. spp were sampled by solid phase microextraction(SPME). The chemical constituents were separated and identified by gas chromatography-mass spectrometry. Linalol(59.64%), trans-ocimene(30.35%), benzene, 1,4-dimethoxy(2.03%), benzoic acid, methyl ester(1.69%), phenol, 2-methoxy-4-(1-propenyl), (E)-(1.69%),β-pinene(1.56%) were the most abundant volatiles released from fresh flowers of lilium. spp and a total of 23 volatile compounds were identified in this study. The results demonstrated that headspace SPME-GC/MS is a simple, rapid and solvent free method suitable for analysis of volatile compounds emitted from fresh flowers of lilium. spp. 相似文献
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