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(GCMS),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。
[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. tabuliforrnis, 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.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2016年第7期146-153,共8页
Journal of Northwest A&F University(Natural Science Edition)
基金
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)
关键词
园林树木
有机挥发物
萜烯类化合物
西安市
landscape trees
volatile organic compounds （VOCs）
terpenes
Xi ＇ an
