Evaluation of elemental composition of Laguna Lake sediments collected near Bagumbayan River, Taguig using a Scanning Electron Microscope - Energy Dispersive X-ray Spectroscope (SEM-EDX)

  • Japhet Faustine Resurreccion Caraang Department of Physical Sciences and Mathematics, University of the Philippines Manila
  • Astrid Korina Gabo-Gianan Department of Physical Sciences and Mathematics, University of the Philippines Manila
  • Sarah Johnson Department of Physical Sciences and Mathematics, University of the Philippines Manila
  • Migel Catalig Department of Physical Sciences and Mathematics, University of the Philippines Manila
  • Mon Bryan Gili Philippine Nuclear Research Institute, Department of Science and Technology
  • Edanjarlo Marquez Department of Physical Sciences and Mathematics, University of the Philippines Manila

Abstract

Rapid urbanization has led to the increase of anthropogenic input to the environment. A way of evaluating this effect is by measuring the elemental composition of sediments and their corresponding enrichment factor. Sediment samples collected from Laguna Lake near the mouth of Bagumbayan River in Taguig were characterized using a scanning electron microscope – energy dispersive X-ray spectroscope (SEM-EDX). The EDX spectrometer was able to quantify 11 elements namely oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, titanium, sulfur, and phosphorous. The calculated enrichment factor for the different metals showed minimal enrichment in titanium (1.26 to 1.75) and iron (1.05 to 1.56), with the highest value observed at the mouth of Bagumbayan River. This is an indicative of their anthropogenic nature. Moreover, variations in phosphorus concentration along the six sampling sites were observed. This can be attributed to the density of fish pens along the sampling area, in which phosphorous is a primary component of fish feed.

Published
2019-05-19
How to Cite
[1]
J. F. Caraang, A. K. Gabo-Gianan, S. Johnson, M. Catalig, M. B. Gili, and E. Marquez. Evaluation of elemental composition of Laguna Lake sediments collected near Bagumbayan River, Taguig using a Scanning Electron Microscope - Energy Dispersive X-ray Spectroscope (SEM-EDX), Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-PB-41 (2019). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2019-PB-41.