TY  - JOUR
AU  - Apel, E. C.
AU  - Brauers, T.
AU  - Koppmann, R.
AU  - Bandowe, B.
AU  - Boßmeyer, J.
AU  - Holzke, C.
AU  - Tillmann, R.
AU  - Wahner, A.
AU  - Wegener, R.
AU  - Brunner, A.
AU  - Jocher, M.
AU  - Ruuskanen, T.
AU  - Spirig, C.
AU  - Steigner, D.
AU  - Steinbrecher, R.
AU  - Gomez Alvarez, E.
AU  - Müller, K.
AU  - Burrows, J. P.
AU  - Schade, G.
AU  - Solomon, S. J.
AU  - Ladstätter-Weißenmayer, A.
AU  - Simmonds, P.
AU  - Young, D.
AU  - Hopkins, J. R.
AU  - Lewis, A. C.
AU  - Legreid, G.
AU  - Reimann, S.
AU  - Hansel, A.
AU  - Wisthaler, A.
AU  - Blake, R. S.
AU  - Ellis, A. M.
AU  - Monks, P. S.
AU  - Wyche, K.P.
TI  - Intercomparison of oxygenated volatile organic compound measurements at the SAPHIR atmosphere simulation chamber
JO  - Journal of Geophysical Research
VL  - 113
SN  - 0148-0227
CY  - Washington, DC
PB  - Union
M1  - PreJuSER-1002
SP  - D20307
PY  - 2008
N1  - This work was supported by the EU FP-6 programs ACCENT (GOCE CT-2004-505337) and EUROCHAMP (RII3-CT-2004-505968). We thank R. Haseler and F. J. Johnen for the support of the experiments.
AB  - This paper presents results from the first large-scale in situ intercomparison of oxygenated volatile organic compound (OVOC) measurements. The intercomparison was conducted blind at the large (270 m(3)) simulation chamber, Simulation of Atmospheric Photochemistry in a Large Reaction Chamber (SAPHIR), in Julich, Germany. Fifteen analytical instruments, representing a wide range of techniques, were challenged with measuring atmospherically relevant OVOC species and toluene (14 species, C-1 to C-7) in the approximate range of 0.5-10 ppbv under three different conditions: (1) OVOCs with no humidity or ozone, (2) OVOCs with humidity added (r.h. approximate to 50%), and (3) OVOCs with ozone (approximate to 60 ppbv) and humidity (r.h. approximate to 50%). The SAPHIR chamber proved to be an excellent facility for conducting this experiment. Measurements from individual instruments were compared to mixing ratios calculated from the chamber volume and the known amount of OVOC injected into the chamber. Benzaldehyde and 1-butanol, compounds with the lowest vapor pressure of those studied, presented the most overall difficulty because of a less than quantitative transfer through some of the participants' analytical systems. The performance of each individual instrument is evaluated with respect to reference values in terms of time series and correlation plots for each compound under the three measurement conditions. A few of the instruments performed very well, closely matching the reference values, and all techniques demonstrated the potential for quantitative OVOC measurements. However, this study showed that nonzero offsets are present for specific compounds in a number of instruments and overall improvements are necessary for the majority of the techniques evaluated here.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000260393100005
DO  - DOI:10.1029/2008JD009865
UR  - https://juser.fz-juelich.de/record/1002
ER  -