In situ isoprene measurements from foliage using a fast-response hydrocarbon instrument

D. Wang, Jose Fuentes

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This manuscript reports on the findings of two research activities. First, a fast-response flame ionization hydrocarbon sensor is described and employed to investigate the environmental responses of isoprene emissions from intact leaves. The principal features of the instrument include high portability, linear response to changes in hydrocarbon concentrations, no baseline drift with time, fast-response (∼1 s) to changes in airstream hydrocarbon concentrations, and a low carbon detection limit of 100 parts per trillion (pptC). The instrument was field tested and employed to investigate hydrocarbon emissions from boreal and mixed temperate forests in Canada. Foliage gas exchange systems were readily interfaced with the hydrocarbon detector to study the environmental controls on hydrocarbon emissions from foliage still attached to plants. On average, the sensor outputs agree within 4% of the results obtained with traditional hydrocarbon measurement methodologies such as gas chromatography. Second, evidence is provided to demonstrate that the foliage isoprene emission capacity is highly sensitive to the recent exposure of low (<10°C) ambient temperature.

Original languageEnglish (US)
Pages (from-to)37-48
Number of pages12
JournalAgricultural and Forest Meteorology
Volume116
Issue number1-2
DOIs
StatePublished - Apr 30 2003

Fingerprint

isoprene
foliage
hydrocarbons
hydrocarbon
leaves
sensors (equipment)
sensor
environmental response
mixed forests
mixed forest
temperate forests
in situ
temperate forest
gas exchange
detectors
ambient temperature
gas chromatography
detection limit
ionization
Canada

All Science Journal Classification (ASJC) codes

  • Forestry
  • Global and Planetary Change
  • Agronomy and Crop Science
  • Atmospheric Science

Cite this

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abstract = "This manuscript reports on the findings of two research activities. First, a fast-response flame ionization hydrocarbon sensor is described and employed to investigate the environmental responses of isoprene emissions from intact leaves. The principal features of the instrument include high portability, linear response to changes in hydrocarbon concentrations, no baseline drift with time, fast-response (∼1 s) to changes in airstream hydrocarbon concentrations, and a low carbon detection limit of 100 parts per trillion (pptC). The instrument was field tested and employed to investigate hydrocarbon emissions from boreal and mixed temperate forests in Canada. Foliage gas exchange systems were readily interfaced with the hydrocarbon detector to study the environmental controls on hydrocarbon emissions from foliage still attached to plants. On average, the sensor outputs agree within 4{\%} of the results obtained with traditional hydrocarbon measurement methodologies such as gas chromatography. Second, evidence is provided to demonstrate that the foliage isoprene emission capacity is highly sensitive to the recent exposure of low (<10°C) ambient temperature.",
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In situ isoprene measurements from foliage using a fast-response hydrocarbon instrument. / Wang, D.; Fuentes, Jose.

In: Agricultural and Forest Meteorology, Vol. 116, No. 1-2, 30.04.2003, p. 37-48.

Research output: Contribution to journalArticle

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