Article
Environmental Sciences
Yasmany Mancilla, Gerardo Medina, Lucy T. Gonzalez, Pierre Herckes, Matthew P. Fraser, Alberto Mendoza
Summary: Source attribution of airborne particulate matter relies on organic molecular markers to estimate emissions from different sources. In the Monterrey Metropolitan Area of Mexico, source profiles for PM2.5 from 12 major source types were obtained using a ground-based sampling approach. Statistical analysis showed distinct source profiles, with the potential to be utilized in receptor models for source apportionment and air pollution abatement strategy development in similar regions.
Article
Environmental Sciences
Cesar Alejandro Pozo-Luyo, Jorge M. Cruz-Duarte, Ivan Amaya, Jose Carlos Ortiz-Bayliss
Summary: By using machine learning models, we can accurately predict the future changes in PM2.5 concentration in the Monterrey Metropolitan Area and provide early warnings for people to take necessary measures to protect their health.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
R. O. Martinez-Verduzco, L. M. Reyna-Gomez, A. Cruz-Lopez, J. R. Carrillo-Avila, A. Valdez-Cavazos, S. I. Suarez-Vazquez
Summary: This study investigates the influence of Saharan dust on the physicochemical properties of PM2.5 in the Monterrey Metropolitan Area in Mexico. PM2.5 sampling was conducted during the peak of Saharan dust in July 2021, and additional samples were taken for comparison. Elemental composition, crystalline phases, morphology, and organic matter of PM2.5 were analyzed. Results show that Saharan dust contributes to more than 22% of PM2.5 increase, with elevated levels of sulfur and aluminum compounds. The arrival of Saharan dust also leads to a decrease in organic matter content and changes in particle size distribution, morphology, and crystalline compounds. During dust-free days, PM2.5 composition is associated with crustal particles, as well as emissions from burning fuels and industrial activities near the sampling point. Zinc poses a potential inhalation risk and requires further attention.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Yanzhao Hao, Shunxi Deng, Zhaowen Qiu, Zhenzhen Lu, Hui Song, Naiwang Yang
Summary: The study found that the emissions of PM2.5 components decreased significantly from China IV to China V, with most water soluble ions and elements contributing more to PM2.5. In China IV LDVs, the emissions of PM2.5 components also decreased when switching to natural gas fuel.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ahmet Mustafa Tepe, Guray Dogan
Summary: The study investigated the sources and influences of particulate matter concentrations in Antalya, Turkey, finding that the area is mainly affected by crustal dust and local wood combustion. Source regions affecting S concentrations in the Eastern Mediterranean region were identified as western Anatolia, the Marmara region, the Aegean Sea coasts of Greece, and parts of Bulgaria and Romania.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Ye Tao, Yuan Yuan, Yaojia Cui, Longwei Zhu, Zhuzi Zhao, Shuaishuai Ma, Zhaolian Ye, Xinlei Ge
Summary: This study conducted a comparison of PM2.5 and its chemical components in an industrial site and a suburban site in Changzhou, China, revealing higher PM2.5 concentration in the industrial area. Water-soluble inorganic ions were identified as the major contributors to PM2.5, alongside significant fractions of carbonaceous components. Various analytical techniques such as SP-AMS and PMF were employed to characterize the chemical composition and sources of PM2.5, showing contributions from multiple sources including secondary aerosols, biomass burning, and industrial emissions.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Karim Acuna Askar, Lucy T. Gonzalez, Alberto Mendoza, Oxana V. Kharissova, Andrea Rodriguez-Garza, Eleazar M. Lara, Alfredo Campos, D. Lopez-Serna, Lilia M. Bautista-Carrillo, J. M. Alfaro-Barbosa, F. E. Longoria-Rodriguez
Summary: In this study, the chemical composition and optical properties of PM2.5 and WSOC were investigated in the Monterrey Metropolitan Area in Mexico. The potential sources of WSOC emissions were determined using fluorescence excitation-emission matrix spectra and parallel factor analysis. The results revealed the presence of both organic and inorganic chemical species in PM2.5, and suggested the predominance of brown carbon (BrC) compounds in the WSOC fraction.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Fernando Millan-Vazquez, Rodolfo Sosa-Echeveria, Ana Luisa Alarcon-Jimenez, Jose de Jesus Figueroa-Lara, Miguel Torres-Rodriguez, Brenda Liz Valle-Hernandez, Violeta Mugica-Alvarez
Summary: This study characterizes and identifies the sources of water-soluble inorganic ions in PM2.5 collected in Mexico City. The results show higher concentrations of PM2.5 and ions in an industrial area compared to a residential area. The study also reveals that PM2.5 concentrations are highest during the cold dry season and that SO42- is the most abundant ion throughout the year. The PMF model identifies different pollution sources.
Article
Environmental Sciences
Mario A. Aguirre-Lopez, Miguel Angel Rodriguez-Gonzalez, Roberto Soto-Villalobos, Laura Elena Gomez-Sanchez, Angela Gabriela Benavides-Rios, Francisco Gerardo Benavides-Bravo, Otoniel Walle-Garcia, Maria Gricelda Pamanes-Aguilar
Summary: In this study, the spatio-temporal behavior of pollutant PM10 in the Monterrey Metropolitan Area (MMA), Mexico during the period 2010-2018 was analyzed using statistical analysis. The study found a linear decrease in PM10 concentration with an annual cyclicity, with the autumn-winter period being the most polluted. The paper also introduced three practical statistical methods for analyzing air quality spatio-temporal behavior.
Article
Green & Sustainable Science & Technology
Benedetto Schiavo, Ofelia Morton-Bermea, Thania Elizabeth Arredondo-Palacios, Diana Meza-Figueroa, Agustin Robles-Morua, Rocio Garcia-Martinez, Daisy Valera-Fernandez, Claudio Inguaggiato, Belem Gonzalez-Grijalva
Summary: This study analyzes the variation of gaseous pollutants during the pre-lockdown, lockdown, and unlock period in Monterrey using ground-based measurements. The results show a drastic decrease in measured contaminants during the lockdown period, except for O-3 which increased. Using satellite data, a NO2 reduction during lockdown was also observed. The findings suggest a link between air pollutants and economic activity, and can be utilized for future strategies to improve urban air quality.
Article
Environmental Sciences
Alexandra Beal, Jorge A. Martins, Anderson P. Rudke, Daniela S. de Almeida, Iara da Silva, Otavio Medeiros Sobrinho, Maria de Fatima Andrade, Cesar R. T. Tarley, Leila D. Martins
Summary: This study evaluated the sources of ions, metals, and metalloids in fine atmospheric particulate matter (PM2.5) from the triple border region of Brazil, Santa Catarina, and northeastern Argentina. The main sources were identified as soil, agricultural activities, vehicular emissions, aerosols from biomass burning, and industrial activities, possibly influenced by long-distance transport. Elements considered to have ice nuclei activity were found in the PM2.5 composition, indicating a potential role in hail formation, although further research is needed to confirm this.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
M. Manousakas, E. Diapouli, C. A. Belis, V. Vasilatou, M. Gini, F. Lucarelli, X. Querol, K. Eleftheriadis
Summary: This study aimed to assess the differences in chemical profiles of major anthropogenic and natural PM sources in two areas with varying levels of urbanization and traffic density in the same urban agglomeration. Statistical analysis tools including Pearson correlation and Standardized Identity Distance were used to quantify the similarity between source profiles. The study found high correlation in some sources (Mineral Dust, Biomass Burning, Sea Salt, Sulfates, Heavy Oil Combustion) but different results for Biomass Burning, highlighting the importance of using multiple tools for a thorough evaluation of source profile similarity.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Lixia Wang, Jikun Li, Junfeng Xiang, Jie Cui, Yalin Tang
Summary: Nuclear magnetic resonance (NMR) spectroscopy has provided powerful tools for studying dynamic processes. Chemical exchange saturation transfer (CEST) is suitable for systems with slow exchange rates and shows potential in detecting metastable substances and understanding dynamic mechanisms. This study used QUEZS and QUEST methods to investigate the kinetics of slow chemical exchange in N,N-dimethylacetylamide (DMA). The results demonstrated the reliability of CEST-based techniques in providing accurate kinetic data under different temperatures.
CHINESE CHEMICAL LETTERS
(2022)
Article
Environmental Sciences
Yi Yang, Xianli Ma, Weiyi Pang, Caina Jiang
Summary: Epidemiological studies found an association between particulate matter (PM2.5) and gestational diabetes mellitus (GDM), but causality was not established. Mendelian randomization using GWAS summary data was performed to analyze the causal relationship between PM2.5 and GDM, using the inverse variance weighted (IVW) method. Exposure data came from a GWAS dataset of 423,796 European participants from the United Kingdom Biobank, and GDM data was provided by the FinnGen consortium (6033 cases and 123,000 controls). Multivariable MR analysis adjusting for BMI and smoking confirmed a causal relationship between PM2.5 and GDM.
Article
Environmental Sciences
Ji-In Park, Min Sung Kim, Myoung Yeo, Mira Choi, Ji Yi Lee, Amgalan Natsagdorj, Changhyuk Kim, Mijung Song, Kyoung-Soon Jang
Summary: This study investigated the morphological and elemental properties of PM2.5 particles collected in Ulaanbaatar, Mongolia during winter. The results showed that the particle shape distribution on haze days was irregular, spherical, cluster, and chain-like, while on clean days it was irregular, cluster, spherical, and chain-like. Carbonaceous particles were the most abundant on both days. The study also found a significant association between high levels of PM2.5 and SO2 and CO gases, indicating the contribution of solid fuel combustion in Ulaanbaatar during winter.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Tobias Stolz, Maria E. Huertas, Alberto Mendoza
ATMOSPHERIC POLLUTION RESEARCH
(2020)
Article
Environmental Sciences
Jose I. Huertas, Antonio E. Mogro, Alberto Mendoza, Maria E. Huertas, Rolando Ibarra
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Environmental Sciences
Johana M. Carmona, Pawan Gupta, Diego F. Lozano-Garcia, Ana Y. Vanoye, Fabiola D. Yepez, Alberto Mendoza
Article
Environmental Sciences
Sigfrido Iglesias-Gonzalez, Maria E. Huertas-Bolanos, Ivan Y. Hernandez-Paniagua, Alberto Mendoza
Article
Environmental Sciences
Francisco E. Longoria-Rodriguez, Lucy T. Gonzalez, Yasmany Mancilla, Karim Acuna-Askar, Jesus Alejandro Arizpe-Zapata, Jessica Gonzalez, Oxana Kharissova, Alberto Mendoza
Summary: In this study, the compositional, morphological, and optical properties of particulate matter (PM) from the Monterrey Metropolitan Area in Mexico were investigated to identify their sources. Different analytical techniques were used to differentiate between particles derived from anthropogenic sources, such as metallurgical industry emissions and vehicle wear, and those from natural sources. The methodology was effective in speciating particles rich in different elements and accurately distinguishing between aluminosilicates and quartz based on their chemical composition rather than morphology.
Article
Environmental Sciences
Yasmany Mancilla, Gerardo Medina, Lucy T. Gonzalez, Pierre Herckes, Matthew P. Fraser, Alberto Mendoza
Summary: Source attribution of airborne particulate matter relies on organic molecular markers to estimate emissions from different sources. In the Monterrey Metropolitan Area of Mexico, source profiles for PM2.5 from 12 major source types were obtained using a ground-based sampling approach. Statistical analysis showed distinct source profiles, with the potential to be utilized in receptor models for source apportionment and air pollution abatement strategy development in similar regions.
Article
Environmental Sciences
Johana M. Carmona, Pawan Gupta, Diego F. Lozano-Garcia, Ana Y. Vanoye, Ivan Y. Hernandez-Paniagua, Alberto Mendoza
Summary: Two models were developed to estimate PM2.5 levels in the Monterrey Metropolitan Area in Mexico, with the Ensemble Neural Network (ENN) model performing better than the Ensemble Multiple Linear Regression (EMLR) model. The combination of satellite-derived AOD and meteorological data allowed for the estimation of PM2.5 distributions in urban areas with low air quality monitor density.
Article
Chemistry, Multidisciplinary
Reyna Berenice Gonzalez-Gonzalez, Nadia Ruiz-Gomez, Gloria Gea, Matias Vazquez-Pinon, Sergio O. Martinez-Chapa, Porfirio Caballero, Alberto Mendoza
Summary: Different processes were studied in handling waste tires, and it was found that the process consisting of chemical activation, pyrolysis, and physical activation enhances the properties of the pyrolytic solid product derived from waste tires, making it suitable for partial substitution of materials for electric energy storage applications.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Nadhiely Martinez-Bello, Monica Jose Cruz-Prieto, David Guemes-Castorena, Alberto Mendoza-Dominguez
Summary: This research focuses on developing a methodology for urban living lab vocation identification for a new water and energy self-sufficient university building. The chosen technologies include capturing and using rain and residual water, solar energy generation, as well as water and energy monitoring. The building acts as a living laboratory, generating knowledge and innovation through student and research group projects.
Article
Chemistry, Multidisciplinary
Reyna Berenice Gonzalez-Gonzalez, Lucy Teresa Gonzalez, Marc Madou, Cesar Leyva-Porras, Sergio Omar Martinez-Chapa, Alberto Mendoza
Summary: In this study, carbon dots were synthesized from activated and non-activated pyrolytic carbon black obtained from waste tires and chemically oxidized with HNO3. The effects on carbon dot properties were analyzed using various characterization techniques. The results showed that carbon dots from activated precursors exhibited different photoluminescence properties compared to those from non-activated precursors. Additionally, a dialysis method was proposed to purify the carbon dots.
Article
Environmental Sciences
Yasmany Mancilla, Gerardo Medina, Lucy T. Gonzalez, Alberto Mendoza
Summary: Source apportionment studies rely on emission profiles, which may not always be available locally. This study presents the results of measuring 12 types of fine particle emission sources in the Monterrey Metropolitan Area to develop local source profiles. The profiles include chemical characterization and statistical analysis to ensure uniqueness. The research found that organic and elemental carbon, as well as sulfur, were the dominant species in the profiles.
REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL
(2022)
Article
Environmental Sciences
Karim Acuna Askar, Lucy T. Gonzalez, Alberto Mendoza, Oxana V. Kharissova, Andrea Rodriguez-Garza, Eleazar M. Lara, Alfredo Campos, D. Lopez-Serna, Lilia M. Bautista-Carrillo, J. M. Alfaro-Barbosa, F. E. Longoria-Rodriguez
Summary: In this study, the chemical composition and optical properties of PM2.5 and WSOC were investigated in the Monterrey Metropolitan Area in Mexico. The potential sources of WSOC emissions were determined using fluorescence excitation-emission matrix spectra and parallel factor analysis. The results revealed the presence of both organic and inorganic chemical species in PM2.5, and suggested the predominance of brown carbon (BrC) compounds in the WSOC fraction.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Food Science & Technology
Michael Perez-Rodriguez, Alberto Mendoza, Lucy T. Gonzalez, Alan Lima Vieira, Roberto Gerardo Pellerano, Jose Anchieta Gomes Neto, Edilene Cristina Ferreira
Summary: Rice is an important source of nutrition and energy, and quality inspection is crucial for protecting consumers and increasing its value. Current labeling methods based on image and visual inspection have shown subjectivity and inefficiency. In this study, laser-induced breakdown spectroscopy (LIBS) was evaluated for labeling rice based on grain quality features, achieving 94% overall prediction accuracy with excellent performance.
Proceedings Paper
Environmental Sciences
J. Huertas, A. Mendoza, M. E. Huertas, R. Ibarra, A. E. Mogro
15TH INTERNATIONAL CONFERENCE ON ATMOSPHERIC SCIENCES AND APPLICATIONS TO AIR QUALITY
(2020)
Proceedings Paper
Environmental Sciences
S. Iglesias-Gonzalez, M. Huertas, I Hernandez-Paniagua, A. Mendoza
15TH INTERNATIONAL CONFERENCE ON ATMOSPHERIC SCIENCES AND APPLICATIONS TO AIR QUALITY
(2020)