Long term hourly measurement of 62 non-methane hydrocarbons in an urban area: Main results and contribution of non-traffic sources

摘要

We present one of the largest and most complete databases of atmospheric non-methane hydrocarbons in the Iberian Peninsula, not only for its temporal resolution and seasonal extent, but for the number of species routinely measured. Results were obtained using an automatic gas chromatograph, during 1998-2001 (April-October) and 2004 (February-July), optimized for systematic, unattended measurement of 62 C-2-C-10 non-methane hydrocarbons (NMHC) every hour, 24 times a day, with detection limits below 0.1 ppbv.