Publicaciones 2011-2020

@article{RN417,
title = {Potential Local and Regional Impacts of Particulate Matter Emitted from One of the World's Largest Open-Pit Coal Mines},
author = { R.E. Rojano and C.A. Manzano and R. Toro and R.G.E. Morales and G. Restrepo and M.A. Leiva},
url = {/brokenurl#<Go to ISI>://WOS:000435421100011},
doi = {10.1007/s11869-017-0542-4},
issn = {1873-9318},
year = {2018},
date = {2018-01-01},
journal = {Air Quality Atmosphere and Health},
volume = {11},
number = {5},
pages = {601-610},
abstract = {This study was designed to evaluate the atmospheric total suspended particle (TSP) and particulate matter (PM10) concentrations and temporal variability in one of the world's largest open-pit coal mines (El Cerrejon) located in northeast Colombia, during 2012-2016. The results showed overall average TSP and PM10 concentrations of 86 mu g m (-3) (CI95% 84-88 mu g m (-3)) and 34 mu g m (-3) (CI95% 33-35 mu g m (-3)), respectively, with the highest concentrations between March and August each year. A time trend analysis of the results revealed that PM10 concentrations in particular have significantly increased between 6.2 and 7.7% per year (CI95% 1.2-12.8% year(-1)) in several of the monitoring stations. Meteorological parameters were also evaluated. It was observed that NE winds with speeds above 2 m s(-1) were significantly correlated with an increase in the concentration of PM10 for selected downwind sites, which suggested that coal mining operations are an important source of atmospheric PM in the area. Regional long-range atmospheric transport scenarios showed potential effects on neighboring municipalities and countries within 72-h transportation events. These highlighted the need to develop new strategies to control the emissions of PM from the local mining industry to comply with local and international guidelines and regulations, particularly when industrial expansion is planned for the near future and relatively large population centers are in the area, of which a high proportion belong to indigenous populations.},
keywords = {air-pollution, area, atmospheric cerrejon, china, cities colombia, environmental chemistry, episodes, health impact, long-range mining mining, open-pit origin, particulatematter, pm10, quality, temporal transport, trends},
pubstate = {published},
tppubtype = {article}
}

@article{toro2014urban,
title = {Urban Atmospheric Ammonia in Santiago City, Chile},
author = { R. Toro and M. Canales and R. Flocchini and R.G.E. Morales and M.A. Leiva},
url = {/brokenurl#<Go to ISI>://WOS:000331789600004},
doi = {10.4209/aaqr.2012.07.0189},
issn = {1680-8584},
year = {2014},
date = {2014-01-01},
journal = {Aerosol and Air Quality Research},
volume = {14},
number = {1},
pages = {33-44},
abstract = {To improve the current understanding of the ammonia distribution in the major urban area of Chile, measurements of atmospheric NH3 were collected in Santiago during three sampling periods (25 April to 27 May, 11 to 26 June and 27 June to 31 July 2008). Additionally, air quality and meteorological data as well as NH4+, NO3-},
keywords = {air ammonia ammonia, chemistry, chile, emissions, environmental chemistry, gaseous new-york, nh3, nitrogen, particulate passive pm2.5, quality, samplers, santiago, secondary sulfate, uncertainty},
pubstate = {published},
tppubtype = {article}
}

@article{castro2013kinetic,
title = {Kinetic and Theoretical Study on Nucleofugality in the Phenolysis of 3-Nitrophenyl and 4-Nitrophenyl 4-Cyanophenyl Thionocarbonates},
author = { E.A. Castro and A. Canete and P.R. Campodonico and M. Cepeda and P. Pavez and R. Contreras and J.G. Santos},
url = {/brokenurl#<Go to ISI>://WOS:000319332600025},
doi = {10.1016/j.cplett.2013.04.002},
issn = {0009-2614},
year = {2013},
date = {2013-01-01},
journal = {Chemical Physics Letters},
volume = {572},
pages = {130-135},
publisher = {2013 Elsevier B.V.},
abstract = {The phenolysis of 3-nitrophenyl 4-cyanophenyl thionocarbonate (1) and 4-nitrophenyl 4-cyanophenyl thionocarbonate (2) are subjected to a kinetic investigation in order to evaluate the nucleofugality of the corresponding leaving groups. For the reaction of 2 only 4-nitrophenoxide is obtained as leaving group. For the reaction of 1 the nucleofugality ratio 3-nitrophenoxide/4-cyanophenoxide is 1/3 from the corresponding T intermediate. Theoretical calculations confirm the experimental results. From these results it can be concluded that the non-leaving group affects the nucleofugality ratio.},
keywords = {aminolysis, carbonates, electronic elimination, ester geminal groups, interactions, leaving mechanism, quality, reactivity, scale},
pubstate = {published},
tppubtype = {article}
}