Concentration of heavy metals in water of Inanam river

Wong, Pick Leh (2010) Concentration of heavy metals in water of Inanam river. Universiti Malaysia Sabah. (Unpublished)


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Inanam River is situated at Inanam District, Kota Kinabalu, Sabah. The aim of this study was to determine the heavy metal concentrations in the water of Inanam River. Sampling was carried out to collect low tide water samples from five sampling stations along the Inanam River. Water samples were filtered with a 0.45 µm membrane filter and acidified to pH<2 prior to analysis. Samples were analysed using Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES) for concentration of heavy metals (Cd, Cu, Pb and Zn). Results obtained were then compared with National Water Quality Standards (NWQS) for Malaysia and United Nations Food and Agriculture Organization (UNFAO) Irrigation Water Standards. From the results obtained, it was found that Cd (0.0062 - 0.0133 mg L�¹), Cu (0.0460 - 0.0691 mg L�¹) and Pb (0.0216 - 0.0633 mg L�¹) were at levels exceeding threshold levels of the water quality standards and guidelines. Concentration of Zn (0.0248 - 0.0869 mg L�¹) in water was at safe levels and not toxic. The trend of heavy metal concentration in the water of Inanam River was Cu > Zn > Pb > Cd. Water of Inanam River had elevated levels of heavy metals indicating heavy metals pollution. However, further in-depth investigations are needed to identify the pollution source of heavy metals.

Item Type: Academic Exercise
Keyword: Heavy metal , Water pollution , water quality standard
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Department: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 08 Apr 2016 10:58
Last Modified: 30 Oct 2017 10:23

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