Please use this identifier to cite or link to this item:
https://ptsldigital.ukm.my/jspui/handle/123456789/462773Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Sahibin Abd Rahim, Prof. Dr. | - |
| dc.contributor.author | Ahmad Shoaib Jahesh (P75308) | - |
| dc.date.accessioned | 2023-09-25T09:10:35Z | - |
| dc.date.available | 2023-09-25T09:10:35Z | - |
| dc.date.issued | 2017-01-20 | - |
| dc.identifier.other | ukmvital:121699 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/462773 | - |
| dc.description | A tributary of the larger Langat basin, the Labu River is under lingering stress from continued urban development and varied land use pattern in the catchment. The main aim of this work is to assess the surface water quality characteristics of the Labu River Catchment to ascertain the current levels of pollution. For this purpose, the study apply a three stages of assessment i.e. field investigations, laboratory analysis and modelling to investigate the surface water quality. Surface water and sediment samples were collected from thirteen stations in June and December 2014 stretching across the Labu River. Physico-chemical parameters of water were measured that included pH, temperature, DO, EC, TSS, Turbidity, BOD, COD, NH3-N, NO2- , NO3- , SO4²-, K⁺, Ca²⁺ and Mg²⁺. Heavy metals content was determined and included Cr, Cu, Fe, Ni, Zn, As, Cd and Pb. The extraction of heavy metals in the riverbed sediment samples were carried out following EPA SW 846 method 3050. Heavy metals in water and sediment extract were determined using Inductively Couple Plasma - Mass Spectrophotometry (ICP-MS). The Enhanced Stream Water Quality Model QUAL2K capable of estimating riverine load of substances was applied for modelling assessment. River bed sediments from the thirteen sampling stations were also collected and analysed for their heavy metals concentration. Water samples data were statistically analysed and compared with National Water Quality Standard of Malaysia (NWQS), and classified based on Water Quality Index (WQI) Malaysia. Pollutions status was deduced by applying several indexes: DOE-Water Quality Index, metal enrichment factor (EF) and surface water quality contamination factor (CF). The results showed that the concentrations of some chemical parameters were above the NWQS at the different stations. The mean level of NH3-N (1.06 ±0.087 mg/L), NO2- (0.38 mg/L), turbidity (88.84 ±77.58 NTU). PO43- (1.73 ±6.67 mg/L)), and Fe (0.49 mg/L) have exceeded the NWQS. The average WQI score (66.08) indicated that water is slightly polluted (Class III). Other parameter analysis results showed that the water is slightly enriched with Ni (EF, 2.00) and Zn (EF, 1.20). The contamination factor (CF) signifies that there is no serious anthropogenic pollution other than Ni (CF, 1.12). The QUAL2K model further showed a conclusive evidence that the river water is slightly polluted due to the state of the environment in that locality. The model demonstrated that the Labu River is capable of dampen high nutrients loads of NH3-N, NO3- and PO43- to a more reduced level and attain the DOE-WQI Class III criteria as demonstrated by Scenario II (reductions of pollutants or nutrients by 80% of existing conditions). The result of this study can be utilized by the local authority as an additional input to the management of the Labu River Catchment for improvement of quality status of the river to at least Class III,Certification of Master's/Doctoral Thesis" is not available | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Science and Technology / Fakulti Sains dan Teknologi | - |
| dc.rights | UKM | - |
| dc.subject | Universiti Kebangsaan Malaysia -- Dissertations | - |
| dc.subject | Dissertations, Academic -- Malaysia | - |
| dc.subject | River sediments -- Malaysia | - |
| dc.subject | Water quality -- standards | - |
| dc.title | Surface water and riverbed sediment quality assessment of the Labu River catchment using water quality standard and indexes | - |
| dc.type | theses | - |
| dc.format.pages | 212 | - |
| dc.identifier.callno | GB1399.9.M4J334 2017 tesis | - |
| dc.identifier.barcode | 003168 (2017) | - |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_121699+SOURCE2+SOURCE2.0.PDF Restricted Access | 1.87 MB | Adobe PDF |  View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.