Red M Castilla
Research Subjects
Research Interests
Red M Castilla has a total of 11 co-authors. Here are the top co-authors by number of shared publications:
- Aileen Huelgas Orbecido
Department of Chemical Engineering, De La Salle University, Manila 0922, Philippines
1 shared publication - Arnel Bas Beltran
Department of Chemical Engineering, Gokongwei College of Engineering, De La Salle University
1 shared publication - Custer Calingasan Deocaris
Philippine Nuclear Research Institute
1 shared publication - Edgar Vallar
Environment And RemoTe sensing researcH (EARTH) Laboratory, Department of Physics, College of Science, De La Salle University, Manila 0922, Philippines
1 shared publication - Lawrence Phoa Belo
Chemical Engineering Department, Gokongwei College of Engineering, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
1 shared publication - Maria Cecilia Galvez
Environment And RemoTe sensing researcH (EARTH) Laboratory, Department of Physics, College of Science, De La Salle University, Manila 0922, Philippines
1 shared publication
Latest Publications
- Open Access
- 8 February 2022
- Published by MDPI AG in Preprints.org
Principal Component Analysis of Heavy Metals in Atmospheric Aerosols from Meycauayan, Bulacan, Philippines
This paper focuses on the application of principal component analysis (PCA) to conduct a source apportionment of atmospheric aerosols from 8 sampling locations along the Marilao-Meycauayan-Obando River System (MMORS). Aerosols were collected on May 2016 during the same time that water samples were collected. Elemental analysis was conducted using a scanning electron microscope coupled with energy dispersive x-ray (SEM-EDX). Carbon (C), nitrogen (N), oxygen (O), sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), sulfur (S), chlorine (Cl), potassium (K), calcium (Ca), titanium (Ti), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), bromine (Br), niobium (Nb), barium (Ba), mercury (Hg), and lead (Pb) concentrations were measured and used as inputs in Principal Component Analysis (PCA). The aerosol samples showed the presence of heavy metals Pb and Hg, elements that were also detected in trace amounts in the water measurements. Concentrations of heavy metals Fe, Pb, Hg in the aerosols were attributed to industrial sources. However, it was determined that the primary source of aerosols in the area were traffic and crustal emissions (C, N, O, Si, Al, Ca). Thus, control of traffic emissions would be more beneficial in reducing aerosol emissions in Meycauayan.
- 8 February 2022
- Published by MDPI AG in Preprints.org
Open AccessPrincipal Component Analysis of Heavy Metals in Atmospheric Aerosols from Meycauayan, Bulacan, Philippines
This paper focuses on the application of principal component analysis (PCA) to conduct a source apportionment of atmospheric aerosols from 8 sampling locations along the Marilao-Meycauayan-Obando River System (MMORS). Aerosols were collected on May 2016 during the same time that water samples were collected. Elemental analysis was conducted using a scanning electron microscope coupled with energy dispersive x-ray (SEM-EDX). Carbon (C), nitrogen (N), oxygen (O), sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), sulfur (S), chlorine (Cl), potassium (K), calcium (Ca), titanium (Ti), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), bromine (Br), niobium (Nb), barium (Ba), mercury (Hg), and lead (Pb) concentrations were measured and used as inputs in Principal Component Analysis (PCA). The aerosol samples showed the presence of heavy metals Pb and Hg, elements that were also detected in trace amounts in the water measurements. Concentrations of heavy metals Fe, Pb, Hg in the aerosols were attributed to industrial sources. However, it was determined that the primary source of aerosols in the area were traffic and crustal emissions (C, N, O, Si, Al, Ca). Thus, control of traffic emissions would be more beneficial in reducing aerosol emissions in Meycauayan.