%0 Journal Article %T Wet Deposition Fluxes and Related Atmospheric Chemistry at Three Sites in Mexico %A Rosa Mar¨ªa Cer¨®n Bret¨®n %A Julia Griselda Cer¨®n Bret¨®n %A Claudia Alejandra Aguilar Uc¨¢n %A Evangelina Ram¨ªrez Lara %A Jos¨¦ Abraham Ort¨ªnez ¨¢lvarez %A Carlos Montalvo Romero %A Carmen Guadalupe Carballo Pat %J Open Journal of Air Pollution %P 1-9 %@ 2169-2661 %D 2014 %I Scientific Research Publishing %R 10.4236/ojap.2014.31001 %X

Wet deposition was collected in Mexico City (MC), Metropolitan Area of Monterrey (MAM) and El Chico National Park (ECNP), during 2009 and 2010. pH, conductivity, Cl-, \"\", Na+, K+, Ca2+ and Mg2+ were determined. In MC, sulphate levels were greater than nitrate levels, and NH4 had mixed sources (vehicular emissions and agriculture activities). MAM had markedly alkaline atmospheric deposition, Na+ and Cl-levels were unexpectedly high, especially during hurricane ¡°Alex¡±. Low pH values were found in ECNP and nitrate concentrations were high, suggesting the influence of a local source (forest fires). Deposition fluxes (Kg.ha-1yr-1) for N-NO3, N-NH4 and S-SO4 were 1.36, 2.74 and 4.84 for MAM; 7.27, 0.57 and 4.32 for ECNP; and 5.97, 4.96 and 6.78 for MC, respectively. Nitrogen deposition fluxes in ECNP were high considering that this site is a natural reserve.