... Analysis of light hydrocarbon gases at 3 sites (XAL, MER, and PED), and heavy hydrocarbons, polycyclic aromatic hydrocarbons (PAH), and nitro-PAH at 1 site(MER)• Ozone measurements at the XAL and ... Iglesias, and E. W. Garcia, 1998: Climatological Analyses Of Air Pollution In The Mexico City Basin, 10th Conference on the Applications of Air Pollution Meteorology, January 11-16, Phoenix, AZ, American ... analyses by ion chromatography,10 elemental analyses by x-ray fluorescence,11water soluble sodium and potassium analyses by atomic absorption spectroscopy,12 ammoniumanalysis by automated...