Juan Manuel Alfaro-Barbosa
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Juan Manuel Alfaro-Barbosa has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Antonio López-Reyes
Faculty of Chemical Science, Autonomous University of Nuevo Leon, Av. Universidad S/N, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León 66451, Mexico
1 shared publication - Daniel López-Serna
Facultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
1 shared publication - Darithsa Loya-González
Universidad Tecnológica de la Tarahumara, Carr. Guachochi-Yoquivo Km 1.5, Guachochi 33180, Chihuahua, Mexico
1 shared publication - Humberto González-Rodríguez
Facultad de Ciencias Forestales, Universidad Autónoma de Nuevo León
1 shared publication - Israel Cantú Silva
Universidad Autonóma de Nuevo León
1 shared publication
Latest Publications
- Open Access
- 8 December 2020
- Published by MDPI AG in Environments
- Vol. 7 (12) , 106
Chemical Composition of Bulk Precipitation and Its Toxicity Potential Index in the Metropolitan Area of Monterrey, Northeastern Mexico
The rainwater chemistry within the Metropolitan Area of Monterrey (MAM) was studied during a one-year period (January 2019–January 2020) in seven sampling sites. The metal concentration of Zn, Fe, Cd, Cu, Ni, and Mn was analyzed in bulk samples and the toxicity potential (TP) was calculated for each metal. A canonical correspondence analysis (CCA) was applied to identify the relationship between environmental variables and metals concentrations. An average of 26.6 ± 10 mm of rainfall was obtained. A mean pH of 7.2 ± 0.3 and a mean electrical conductivity of 177.8 ± 8.7 µS cm−1 were observed. The average concentration of metals in all sites follows a descending order of Fe> Zn > Mn > Cu > Ni > Cd. The university site shows the highest averages of Fe, Zn, Cu, and Mn, which is attributed to its proximity to the metallurgical industry. The TP value of Cd reflects a risk in all sites and Fe only for the Universidad, Obispado, Pastora, and Santa Catarina sites, using as a reference value the Environmental Protection Agency (EPA) Drinking Water Regulations and Mexican norm NOM-127-SSA1-1994. The CCA analysis showed that only Ni and Cd had a strong correlation with the environmental variable of relative humidity of air.
- 8 December 2020
- Published by MDPI AG in Environments
- Vol. 7 (12) , 106
Open AccessChemical Composition of Bulk Precipitation and Its Toxicity Potential Index in the Metropolitan Area of Monterrey, Northeastern Mexico
The rainwater chemistry within the Metropolitan Area of Monterrey (MAM) was studied during a one-year period (January 2019–January 2020) in seven sampling sites. The metal concentration of Zn, Fe, Cd, Cu, Ni, and Mn was analyzed in bulk samples and the toxicity potential (TP) was calculated for each metal. A canonical correspondence analysis (CCA) was applied to identify the relationship between environmental variables and metals concentrations. An average of 26.6 ± 10 mm of rainfall was obtained. A mean pH of 7.2 ± 0.3 and a mean electrical conductivity of 177.8 ± 8.7 µS cm−1 were observed. The average concentration of metals in all sites follows a descending order of Fe> Zn > Mn > Cu > Ni > Cd. The university site shows the highest averages of Fe, Zn, Cu, and Mn, which is attributed to its proximity to the metallurgical industry. The TP value of Cd reflects a risk in all sites and Fe only for the Universidad, Obispado, Pastora, and Santa Catarina sites, using as a reference value the Environmental Protection Agency (EPA) Drinking Water Regulations and Mexican norm NOM-127-SSA1-1994. The CCA analysis showed that only Ni and Cd had a strong correlation with the environmental variable of relative humidity of air.