Content and composition of dissolved organic carbon in precipitation at the southern part of Mexico City
| العنوان: | Content and composition of dissolved organic carbon in precipitation at the southern part of Mexico City |
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| المؤلفون: | Guillermo Montero-Martínez, Angélica Mendoza-Trejo, Déborah Patricia Hernández-Nagay, Priyadarsi D. Roy, Joel Rivera-Arellano, Gema Luz Andraca-Ayala, Anielka Rosado-Abón |
| المصدر: | Universidad Nacional Autónoma de México UNAM Redalyc-UNAM Atmósfera (México) Num.4 Vol.31 |
| بيانات النشر: | Centro de Ciencias de la Atmosfera, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Total organic carbon, Atmospheric Science, 010504 meteorology & atmospheric sciences, Water, rain neutralization, chemistry.chemical_element, 010501 environmental sciences, 01 natural sciences, Rainwater harvesting, Mexico City, chemistry, Mexico city, Environmental chemistry, Dissolved organic carbon, Ciencias de la Tierra, Environmental science, Composition (visual arts), Precipitation, Carbon, urban pollution, soluble organic compounds, Air mass, 0105 earth and related environmental sciences |
| الوصف: | We present concentrations of dissolved total carbon (TC) and organic carbon (OC) in rainwater samples collected in 2016 in the southern part of Mexico City in a preliminary study. TC ranged from 10 to 25 mgC L –1 and OC – reported as non-purgable organic carbon (NPOC) – varied between 2.5 and 20 mgC L –1 . NPOC concentrations were higher in samples collected between May and July and a change in the ratio of NPOC/TC was detected for the second part of the campaign (i.e., August-October). 1 H NMR analysis indicated presence of aldehydes, carboxylic and other oxygenated hydrocarbons in the precipitation. An evaluation of air mass back-trajectories suggested no relationship between the organic contents and wind directions. Carbon contents were originated from sources within the basin of Mexico and higher pH of rainwater during the passage of air masses indicates that the sources causing rain neutralization are located in northern parts of the city. |
| وصف الملف: | application/pdf |
| تدمد: | 2395-8812 0187-6236 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7c727a76068ad039e336893100332c6Test https://doi.org/10.20937/atm.2018.31.04.02Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d7c727a76068ad039e336893100332c6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23958812 01876236 |
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