Galvez, M.C.D.; Vallar, E.; Castilla, R.M.; Mandia, P.; Branzuela, R.; Rempillo, O.; Orbecido, A.H.; Beltran, A.; Ledesma, N.; Deocaris, C.; Morris, V.; Belo, L.P. Principal Component Analysis of Heavy Metals in Atmospheric Aerosols from Meycauayan, Bulacan, Philippines. Preprints2022, 2022020120. https://doi.org/10.20944/preprints202202.0120.v1
APA Style
Galvez, M.C.D., Vallar, E., Castilla, R.M., Mandia, P., Branzuela, R., Rempillo, O., Orbecido, A.H., Beltran, A., Ledesma, N., Deocaris, C., Morris, V., & Belo, L.P. (2022). Principal Component Analysis of Heavy Metals in Atmospheric Aerosols from Meycauayan, Bulacan, Philippines. Preprints. https://doi.org/10.20944/preprints202202.0120.v1
Chicago/Turabian Style
Galvez, M.C.D., Vernon Morris and Lawrence Phoa Belo. 2022 "Principal Component Analysis of Heavy Metals in Atmospheric Aerosols from Meycauayan, Bulacan, Philippines" Preprints. https://doi.org/10.20944/preprints202202.0120.v1
Abstract
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.
Keywords
Meycauayan; aerosols; source apportionment; principal component analysis; MMORS
Subject
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
