| 摘要: |
| 【目的】探究西安市5种常见园林绿化树木挥发性有机化合物（VOCs）的成分组成，为园林树种的科学配置和植物资源的开发利用提供理论依据。【方法】采用动态顶空循环吸附采集法和气相色谱 质谱联用技术（GC-MS）,对白皮松、油松、侧柏、云杉以及雪松的挥发物进行采集和分析，并结合峰面积归一化法计算不同树种各化合物的相对含量。【结果】白皮松VOCs包括8类32种，油松释放的VOCs为8类38种，侧柏VOCs包括6类29种，云杉中检测到的VOCs为7类19种，雪松VOCs则包含8类36种；5种园林树木均含有萜烯类、醇类、酮类、醛类、烷烃类和芳烃类等6类化合物，其中萜烯类化合物相对含量最高，均达到70%以上；5种树种VOCs中，包括α-蒎烯、三环萜、莰烯、1,3-二乙基苯等在内的8种共有成分分别占白皮松、油松、侧柏、云杉和雪松总VOCs的86.87%,59.89%,74.35%,64.12%和61.20%，其中以萜烯类共有成分占绝对优势。【结论】5种园林树木有机挥发物成分的种类及相对含量存在一定差异，但主要成分皆为萜烯类化合物。 |
| 关键词: 园林树木 有机挥发物 萜烯类化合物 西安市 |
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| 基金项目:国家林业局948项目“森林对大气质量影响评价模型应用技术引进”（2013-4-56） |
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| Composition of volatile organic compounds from five landscape trees |
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XIE Xiaoyang,FENG Yongzhong,WANG Dexiang,et al
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| Abstract: |
| 【Objective】Constituents of volatile organic compounds (VOCs) from five landscape trees in Xi’an were analyzed to provide theoretical basis for landscape application and exploitation of plant resources.【Method】The VOCs from five landscape trees including Pinus bungeana,Pinus tabuliformis,Platycladus orientalis,Picea asperata and Cedrus deodara in Xi’an were collected by dynamic headspace air circulation method. Then the constituents and relative contents were identified with gas chromatography-mass spectrometer (GC-MS).【Result】The VOCs from P.bungeana,P.tabuliformis,P.orientalis,P.asperata and C.deodara were 32 species from 8 categories,38 species from 8 categories,29 species from 6 categories,19 species from 7 categories and 36 species from 8 categories,respectively.Terpenes,alcohols,ketones,aldehydes,alkanes and aromatics were found in VOCs from all five tree species with the highest relative content of 70% for terpenes.The 8 common components including α pinene,tricyclene,camphene and 1,3-diethyl-benzene accounted for 86.87%,59.89%,74.35%,64.12% and 61.20%,respectively.Terpenes were the dominating species in common components.【Conclusion】Compositions and relative contents of VOCs from 5 species were different,but the major species of terpenes was same. |
| Key words: landscape trees volatile organic compounds (VOCs) terpenes Xi’an |
