Biogenic VOC emissions from fresh leaf mulch and wood chips of Grevillea robusta (Australian Silky Oak)

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• 作者：Rosemary Fedele ; Ian E. Galbally ; Nichola Porter ; Ian A. Weeks
• 关键词：Volatile organic compounds ; Emissions ; Methane ; Grevillea robusta ; Leaf mulch ; Wood chips
• 刊名：Atmospheric Environment
• 出版年：2007
• 出版时间：December 2007
• 年：2007
• 卷：41
• 期：38
• 页码：8736-8746
• 全文大小：373 K

文摘

The emissions of VOC from freshly cut and shredded Grevillea robusta (Australian Silky Oak) leaves and wood have been measured. The VOC emissions from fresh leaf mulch and wood chips lasted typically for 30 and 20 h respectively, and consisted primarily of ethanol, (E)-2-hexenal, (Z)-3-hexen-1-ol and acetaldehyde. The integrated emissions of the VOCs were 0.38±0.04 g kg⁻¹ from leaf mulch, and 0.022±0.003 g kg⁻¹ from wood chips. These emissions represent a source of VOCs in urban and rural air that has previously been unquantified and is currently unaccounted for. These VOCs from leaf mulch and wood chips will contribute to both urban photochemistry and secondary organic aerosol formation. Any CH₄ emissions from leaf mulch and wood chips were <1×10⁻¹¹ g g dry mass⁻¹ s⁻¹.