globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50215
论文题名:
A high-frequency response relaxed eddy accumulation flux measurement system for sampling short-lived biogenic volatile organic compounds
作者: Arnts R.R.; Mowry F.L.; Hampton G.A.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:10
起始页码: 4860
结束页码: 4873
语种: 英语
英文关键词: biogenic VOC ; flux measurement ; REA
Scopus关键词: Frequency response ; Lipids ; Ozone ; Volatile organic compounds ; Biogenic VOCs ; Biogenic volatile organic compounds ; Flux measurements ; High frequency response ; Internal standards ; REA ; Relaxed Eddy accumulation ; Volumetric errors ; Atmospheric composition ; accumulation ; adsorption ; biogenic material ; eddy ; flux measurement ; ozone ; sampling ; volatile organic compound
英文摘要: A second-generation relaxed eddy accumulation system was built and tested with the capability to measure vertical biogenic volatile organic compound (VOC) fluxes at levels as low as 10 μg C m-2 hr-1. The system features a continuous, integrated gas-phase ozone removal procedure to allow for the measurement of highly reactive species such as β-caryophyllene and polar terpenoids such as linalool. A two-component internal standard continuously added to the accumulators was used to correct for switching-induced volumetric errors and as a check on VOC losses exceeding accumulator tube adsorption limits. In addition, the internal standards were used to demonstrate that accumulators quickly return to target flow rates at segregation valve switching frequencies up to at least 0.8 Hz. The system was able to measure daytime hourly fluxes of individual biogenic VOC including oxygenated terpenoids, monoterpenes, and sesquiterpenes. Key Points Flux measurement methodology for high reactivity, semi-volatile VOCsREA with integrated gas phase ozone removalInternal standard used for volumetric corrections and accumulator VOC breakthrough ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63778
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: National Exposure Research Laboratory, Human Exposure and Atmospheric Sciences Division, US EPA, 109 T W Alexander Drive, Research Triangle Park, NC 27711, United States; Nicholas School of the Environment and Earth Sciences, Duke University North Carolina, Durham, United States; National Risk Management Research Laboratory, Air Pollution Prevention Control Division, US EPA, Research Triangle Park NC, United States; Hampton Technologies Inc., Longmont CO, United States

Recommended Citation:
Arnts R.R.,Mowry F.L.,Hampton G.A.. A high-frequency response relaxed eddy accumulation flux measurement system for sampling short-lived biogenic volatile organic compounds[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(10)
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