Chemical composition of total deposition samples collected in the metropolitan area of Costa Rica in 2012
| Autor: | Jorge Herrera, José F. Rojas, Víctor H. Beita, María Chaves |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Ciencias Ambientales, Vol 48, Iss 2, Pp 30-38 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1409-2158 2215-3896 62953230 |
| DOI: | 10.15359/rca.48-2.3 |
| Popis: | Inorganic ions concentrations were measured on bulk precipitation samples in seven sites in San José, Heredia and Belen cities during the rainy season 2012. SO4-2, NO3-, Cl-, F-, PO4-3, NH4+, K+, Na+, Ca+2, Mg+2 were analyzed by ion chromatography. The results indicated that Na+ and SO42− were the most abundant ions. Pearson's correlation, applied to all data, showed a high correlation between SO42- with NO3-, Ca2+ and NH4+, indicating an anthropogenic and neutralization origin respectively. The contribution of NO3- to neutralization was relatively small in comparison with SO42−. PCA analysis was used in order to indentify the mainly sources (crustal, neutralization and marine aerosol) and that contribute to the chemical composition of the bulk precipitation samples. |
| Databáze: | Directory of Open Access Journals |
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