Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan

作者：Matsunaga Sou N^*; Chatani Satoru; Nakatsuka Seiji; Kusumoto Dai; Kubota Katsuyoshi; Utsumi Yasuhiro; Enoki Tsutomu; Tani Akira; Hiura Tsutom

来源：Chemosphere, 2012, 87(8): 886-893.

DOI：10.1016/j.chemosphere.2012.01.040

• Biogenic volatile organic compound
• Kaur-16-ene
• Coniferous tree
• Biogenic emission
• Atmosphere
• Diterpene

Reactive volatile organic compounds (VOCs) are known to affect atmospheric chemistry. Biogenic VOCs (BVOCs) have a significant impact on regional air quality due to their large emission rates and high reactivities. Diterpenes (most particularly, kaur-16-ene) were detected in all of the 205 enclosure air samples collected over multiple seasons at two different sites from Cryptomeria japonica and Chamaecyparis balsa trees, the dominant coniferous trees in Japan,. The emission rate of kaur-16-ene, was determined to be from 0.01 to 7.1 mu g dwg(-1) h(-1) (average: 0.61 mu g dwg(-1) h(-1)) employing branch enclosure measurements using adsorbent sampling followed by solid phase-liquid extraction techniques. The emission rate was comparable to that of monoterpenes, which is known major BVOC emissions, collected from the same branches. In addition, total emission of kaur-16-ene at 30 degrees C was estimated to exceed that of total anthropogenic VOC emissions.

• 出版日期2012-5