北京西山春季侧柏游憩林内挥发物成分及其日变化规律  

Compounds and Diurnal Variation of VOCs of Platycladus orientalis Recreation Forest in Beijing Western Hills in Spring

作　　者：杨伟伟[1,2] 王成[1,2] 郄光发[1,2] 郭二果[1,2] 

机构地区：[1]中国林业科学研究院林业研究所国家林业局森林培育重点实验室 [2]国家林业局城市林业研究中心,北京100091

出　　处：《林业科学研究》2010年第3期462-466,共5页Forest Research

基　　金：国家"十一五"科技支撑计划重大项目课题(2006BAD03A06-3和2006BAD03A17-2);国家科技部科研院所社会公益研究专项(2004DIB1J031)

摘　　要：The research adopts open sampling method and TCT-GC/MS(Thermodesorption Cold Trap-Gas Chromatography/Mass Spectrometery) apparatus to collect and analyze the volatile organic compounds(VOCs) of Platycladus orientalis forest,with the intention of researching the compounds and diurnal variation of VOCs of P.orientalis forest in natural state in Beijing Western Hills in spring.The results are as follows:(1) There are 160 kinds(11 categories) of volatile organic compounds,containing Alkyl Hydrocarbon,Ketone,Alcohol,Acid,Aldehyde,Alkene,Ester,Aromatic hydrocarbon,Ether,Hydroxybenzene and Amide.The content of Alkyl Hydrocarbon,Ketone,Acid and Aldehyde occupy a greater percentage among all compounds.(2) The diurnal variation curve of total volatile organic compounds(TVOC) is characterized as "one peak at 11:00(36.44%) and one vale at 3:00(12.76%)".Generally,the concentration at daytime is higher than that of night,and higher in morning than in afternoon,with the maximum at noon.(3) The change of Alkyl Hydrocarbon concentration is greater in the morning and about midday,less in the afternoon and night.The diurnal variation curve of Ketone concentration appears as "three peaks and three vales".1:00,5:00—7:00 and 11:00 are peak time,3:00,9:00 and 17:00 are vale time.As to Acid,its concentration appears two obvious phases: the higher phase is from 9:00 to 17:00,with the maximum at 11:00,and the lower phase is from 19:00 to 7:00,with the minimum at 5:00.Concerning Aldehyde concentration,17:00 and 19:00 are the higher phases and also has obvious difference with other time,while the lower phrase has no obvious difference with each other.(4) Alkene is the most important compound to human health.Its concentration appears as "one peak" at 15:00,which has obvious difference with other time.Totally,its content at daytime is higher than that at night,and higher in afternoon than in morning.The research adopts open sampling method and TCT-GC/MS（Thermodesorption Cold Trap-Gas Chromatography/Mass Spectrometery） apparatus to collect and analyze the volatile organic compounds（VOCs） of Platycladus orientalis forest,with the intention of researching the compounds and diurnal variation of VOCs of P.orientalis forest in natural state in Beijing Western Hills in spring.The results are as follows：（1） There are 160 kinds（11 categories） of volatile organic compounds,containing Alkyl Hydrocarbon,Ketone,Alcohol,Acid,Aldehyde,Alkene,Ester,Aromatic hydrocarbon,Ether,Hydroxybenzene and Amide.The content of Alkyl Hydrocarbon,Ketone,Acid and Aldehyde occupy a greater percentage among all compounds.（2） The diurnal variation curve of total volatile organic compounds（TVOC） is characterized as ＂one peak at 11：00（36.44%） and one vale at 3：00（12.76%）＂.Generally,the concentration at daytime is higher than that of night,and higher in morning than in afternoon,with the maximum at noon.（3） The change of Alkyl Hydrocarbon concentration is greater in the morning and about midday,less in the afternoon and night.The diurnal variation curve of Ketone concentration appears as ＂three peaks and three vales＂.1：00,5：00—7：00 and 11：00 are peak time,3：00,9：00 and 17：00 are vale time.As to Acid,its concentration appears two obvious phases： the higher phase is from 9：00 to 17：00,with the maximum at 11：00,and the lower phase is from 19：00 to 7：00,with the minimum at 5：00.Concerning Aldehyde concentration,17：00 and 19：00 are the higher phases and also has obvious difference with other time,while the lower phrase has no obvious difference with each other.（4） Alkene is the most important compound to human health.Its concentration appears as ＂one peak＂ at 15：00,which has obvious difference with other time.Totally,its content at daytime is higher than that at night,and higher in afternoon than in morning.

关 键 词：北京 侧柏 游憩林 挥发物成分 日变化 春季 

分 类 号：S791.38[农业科学—林木遗传育种]