A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations

C. A. Ennis, A. L. Lazrus, G. L. Kok, P. R. Zimmerman, Russell Monson

Research output: Chapter in Book/Report/Conference proceedingChapter

8 Citations (Scopus)

Abstract

The system uses flexible Teflon bag-like chambers to enclose entire individual branches of young trees. Five gaseous fluxes (CO2, H2O, SO2, O3 and H2O2) are measured once per hour for each of two branches. A three-week continuous test was run in order to evaluate system performance. Inlet concentrations of the five gases were extremely stable, with uncertainties of ≤2.2% in all cases and day-to-night differences of <4%. Comparison of two branch chambers, one with clean air and one with the added pollutant gases H2O2, SO2, and O3, showed that between-chamber differences were <2% for the average inlet concentrations of H2O and CO2. Pollutant losses to chamber surfaces were significant but were generally smaller than losses to the branch itself. Chamber loss corrections were different for daytime and nighttime conditions and also evolved as the three-week experiment proceeded. -from Authors

Original languageEnglish (US)
Title of host publicationTellus, Series B
Pages170-182
Number of pages13
Volume42 B
Edition2
StatePublished - 1990
Externally publishedYes

Fingerprint

pollutant
experiment
gas
air
loss
pollutant exposure
young
test
comparison

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Ennis, C. A., Lazrus, A. L., Kok, G. L., Zimmerman, P. R., & Monson, R. (1990). A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations. In Tellus, Series B (2 ed., Vol. 42 B, pp. 170-182)

A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations. / Ennis, C. A.; Lazrus, A. L.; Kok, G. L.; Zimmerman, P. R.; Monson, Russell.

Tellus, Series B. Vol. 42 B 2. ed. 1990. p. 170-182.

Research output: Chapter in Book/Report/Conference proceedingChapter

Ennis, CA, Lazrus, AL, Kok, GL, Zimmerman, PR & Monson, R 1990, A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations. in Tellus, Series B. 2 edn, vol. 42 B, pp. 170-182.
Ennis CA, Lazrus AL, Kok GL, Zimmerman PR, Monson R. A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations. In Tellus, Series B. 2 ed. Vol. 42 B. 1990. p. 170-182
Ennis, C. A. ; Lazrus, A. L. ; Kok, G. L. ; Zimmerman, P. R. ; Monson, Russell. / A branch chamber system and techniques for simultaneous pollutant exposure experiments and gaseous flux determinations. Tellus, Series B. Vol. 42 B 2. ed. 1990. pp. 170-182
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