PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators
Version 1
: Received: 15 June 2021 / Approved: 16 June 2021 / Online: 16 June 2021 (10:34:20 CEST)
How to cite:
Diwa, R.; Deocaris, C.; Orbecido, A.; Beltran, A.; Vallar, E.; Galvez, M.C.; Belo, L. Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators. Preprints2021, 2021060439. https://doi.org/10.20944/preprints202106.0439.v1
Diwa, R.; Deocaris, C.; Orbecido, A.; Beltran, A.; Vallar, E.; Galvez, M.C.; Belo, L. Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators. Preprints 2021, 2021060439. https://doi.org/10.20944/preprints202106.0439.v1
Diwa, R.; Deocaris, C.; Orbecido, A.; Beltran, A.; Vallar, E.; Galvez, M.C.; Belo, L. Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators. Preprints2021, 2021060439. https://doi.org/10.20944/preprints202106.0439.v1
APA Style
Diwa, R., Deocaris, C., Orbecido, A., Beltran, A., Vallar, E., Galvez, M.C., & Belo, L. (2021). Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators. Preprints. https://doi.org/10.20944/preprints202106.0439.v1
Chicago/Turabian Style
Diwa, R., Maria Cecilia Galvez and Lawrence Belo. 2021 "Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators" Preprints. https://doi.org/10.20944/preprints202106.0439.v1
Abstract
The City of Meycauayan is considered as one of the most polluted cities in the developing world on the account of industrial discharges of toxic materials to the environment. This work investigated the sources of the heavy metal pollution by analyzing soil and sediment samples for heavy metals (Cr, Hg, Ni, and Pb) together with selected environmental indicators (TN, TOM, and TP) located along the Meycauayan River. Hierarchical cluster analysis (HCA), principal components analysis (PCA), and Pearson correlation analysis (CA) were used to identify the sources of the metals. Results showed delineated locations of severe levels of heavy metal pollution downstream because of the concentration of industrial activities. Cr contributed more than any other heavy metals analyzed due to proliferation of tanneries discharging untreated wastewaters to the river. Significant inputs of Pb and Hg from Pb-acid battery recycling and gold smelting industries were also found. Risk assessments indicated severe levels of heavy metal pollution where industrial activities are concentrated. The mean Cr, Pb, Ni, and Hg in the sampling locations have mean incidences of toxicity of 91.7 %, 53.6 %, 27.7 %, and 70.0 %, respectively. Our study showed a serious need to address heavy metal pollution in Meycauayan.
Keywords
heavy metals; MMORS, Meycauayan River; soil pollution; multivariate analysis; Sediment Quality Guidelines; Single Pollution Index
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.
