Groundwater chemistry of Mabul and Sipadan islands, Sabah

Ahmad Zaharin Aris, (2005) Groundwater chemistry of Mabul and Sipadan islands, Sabah. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Groundwater samples were collected from seven wells on Mabul island and two wells on Sipadan island to understand the groundwater chemistry based on various ion composition (Ca²�, Mg²�, Na +, K+, HCO�₃,SO²�₄,CI�) and in situ parameters such as DO, EC, TDS, pH and temperature. The result of analyses indicates that in general the groundwater of the study areas were highly enriched with Na+, HCO�₃ and Cr. At some sampling sites for both islands, the concentration of these ions (Na�, Ca²�, HCO�₃, SO²�₄,CI�), as well as other parameters such as total dissolved solids were above the World Health Organization standards for drinking water. The high concentration of ions such as Na�, Mg²� and CI� in the groundwater at some locations indicates some encroachment of seawater into the aquifer. The groundwater facies range from Na-HCO₃ to Na-CI waters type. In order to gain an understanding of the hydrochemical process of the groundwater in the Mabul and Sipadan islands, descriptive statistics and correlation matrices were used. The main process influencing the groundwater chemistry are dissolution of minerals, cation exchange processes and simple mixing between two types of waters.

Item Type: Academic Exercise
Uncontrolled Keywords: groundwater, small oceanic islands, Mabul, Sipadan, hydrochemical, hydrochemical facies, salt water intrusion
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: SCHOOL > School of Science and Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 09 Feb 2015 03:36
Last Modified: 24 Oct 2017 06:14
URI: http://eprints.ums.edu.my/id/eprint/10478

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