Ng, Pao Hyean (2008) Determination of heavy metal concentrations and organochlorine pesticide residues from river water samples of Kinabatangan River, Sabah. Universiti Malaysia Sabah. (Unpublished)
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Abstract
This dissertation was aimed to evaluate the concentration of heavy metals and organochlorine pesticide residues in the river water of Kinabatangan River, Sukau. Sabah . In situ tests were conducted on the spot during sampling collection and all samples were preserved for transportation. Heavy metal tests were conducted using Atomic Absorption Spectrophotometer (AAS) to evaluate the concentration of cadmium, chromium, copper. iron , lead and zinc. Gas Chromatography - Mass Spectrometer (GC-MS) was selected for the determination of organochlorine pesticides. Pesticides tested were aldrin. 2A-DDD. 4A-DDD. 2,4-DDE, 4,4-DDE, DDT, heptachlor, hexachlorobenzene, isodrin. α-lindane, Blindane, and y-lindane. Samples tested during the in situ tests showed that the water qua lity was low in terms of dissolved oxygen while the PH level was acidic. Most of the heavy metals tested were either too low to be detected or its concentration was too low. Only lead was tested to be present at high concentrations that might pose a threat towards the environment. None of the organochlorine pesticides tested were detected. Steps have to be taken to ensure the lead levels do not exceed the permissible limit. Further monitoring has to be conducted from time to time to ensure the water quality of Kinabatangan River.
| Item Type: | Academic Exercise |
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| Keyword: | heavy metal, organochlorine pesticide residues, Atomic Abso rption Spectrophotometer, transportation, Kinabatangan River, GC-MS, water quality |
| Subjects: | ?? TP368-456_Food_processing_and_manufacture ?? |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 08 Apr 2014 13:48 |
| Last Modified: | 13 Oct 2017 10:15 |
| URI: | https://eprints.ums.edu.my/id/eprint/8674 |
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