Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim

This study was carried out to determine the distribution of radionuclides and selected heavy metals in surface seawater, to determine the sedimentation rate, to determine the distribution and inventories of naturally occurring radioactive material (NORM) and selected heavy in sediment and finally to...

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Main Author:	Abdul Karim, Umi Kalsum
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Environmental pollution Malaysia Water leakage. Water waste and its prevention
Online Access:	http://ir.uitm.edu.my/id/eprint/15597/ http://ir.uitm.edu.my/id/eprint/15597/1/TM_UMI%20KALSUM%20ABDUL%20KARIM%20AS%2015_5.pdf

id	uitm-15597
recordtype	eprints
spelling	uitm-155972016-12-20T03:42:17Z http://ir.uitm.edu.my/id/eprint/15597/ Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim Abdul Karim, Umi Kalsum Environmental pollution Malaysia Water leakage. Water waste and its prevention This study was carried out to determine the distribution of radionuclides and selected heavy metals in surface seawater, to determine the sedimentation rate, to determine the distribution and inventories of naturally occurring radioactive material (NORM) and selected heavy in sediment and finally to calculate the radiation hazard index (H ex) and assess level of heavy metal contamination in sediment using geo-accumulation index (Igeo). The study area was divided into four sections which covered 30 kilometers along Kuala Selangor coastal area and estuary and about 2 kilometers into Selangor River. The determination of U and Th in seawater did not showed any significant trend along the coastal area. Besides, no significant relationship were observed between U and Th concentrations and value of salinity in the samples which may due to low salinity oceanic environments that occurred in the estuaries and makes the behavior seems more variable. Besides, the concentrations of heavy metals (Pb, Cd and Ni) were varied between stations and most of the stations fairly contaminated with Pb. In addition, the mean concentrations of heavy metals in surface water in Section 4 are well below the Malaysian Drinking Water Quality Standard. The sedimentation rate value in the study area were closer with other study which is in the ranged of 0.1547 - 0.3397 cm/year and most of the stations in Section 3 showed high sedimentation rate than other sections which may due to an increase in land clearing activities at the catchment area of Sungai Selangor. The distribution of NORM in most of the cores showed that it was in the mixing layer based on the inconsistent variation of the activity concentration of NORM. Furthermore, total inventories of 226Ra, 228Ra and 40K in the sediment core were not differ very much between the stations. However, station SS3 in Section 4 displayed the highest inventories of 226Ra and 228Ra which may suggested that the input of Ra from the past mining activities was significant in the area. By comparing the heavy metal concentration in sediment with the average shale standard and New York Sediment quality Guideline, most of the stations in Section 3 and Section 4 exceed the standard. This may suggest that the anthropogenic activities and complex processes that occur in the estuary have elevated the concentration of heavy metals in the area. Moreover, the increased of Pb and Cd in bottom sediment may due to land use changes in Kuala Selangor in 19th century such as mining activities, land clearing for development, industrial and aquaculture and agriculture activities. Besides that, most of the stations in Section 3 showed high inventories of Pb, Cd and Ni which may due to active industrial, agricultural and aquacultural activities along the Sungai Selangor and Kuala Selangor coastal area and also high sedimentation rate in the area. The external hazard index (Hex) in all location is lower than the permissible value which is 1 and the Igeo values have indicated that the quality of sediment in Section 1 and Section 2 was not polluted as compared to Section 3 and Section 4. 2015 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/15597/1/TM_UMI%20KALSUM%20ABDUL%20KARIM%20AS%2015_5.pdf Abdul Karim, Umi Kalsum (2015) Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim. Masters thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Environmental pollution Malaysia Water leakage. Water waste and its prevention
spellingShingle	Environmental pollution Malaysia Water leakage. Water waste and its prevention Abdul Karim, Umi Kalsum Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
description	This study was carried out to determine the distribution of radionuclides and selected heavy metals in surface seawater, to determine the sedimentation rate, to determine the distribution and inventories of naturally occurring radioactive material (NORM) and selected heavy in sediment and finally to calculate the radiation hazard index (H ex) and assess level of heavy metal contamination in sediment using geo-accumulation index (Igeo). The study area was divided into four sections which covered 30 kilometers along Kuala Selangor coastal area and estuary and about 2 kilometers into Selangor River. The determination of U and Th in seawater did not showed any significant trend along the coastal area. Besides, no significant relationship were observed between U and Th concentrations and value of salinity in the samples which may due to low salinity oceanic environments that occurred in the estuaries and makes the behavior seems more variable. Besides, the concentrations of heavy metals (Pb, Cd and Ni) were varied between stations and most of the stations fairly contaminated with Pb. In addition, the mean concentrations of heavy metals in surface water in Section 4 are well below the Malaysian Drinking Water Quality Standard. The sedimentation rate value in the study area were closer with other study which is in the ranged of 0.1547 - 0.3397 cm/year and most of the stations in Section 3 showed high sedimentation rate than other sections which may due to an increase in land clearing activities at the catchment area of Sungai Selangor. The distribution of NORM in most of the cores showed that it was in the mixing layer based on the inconsistent variation of the activity concentration of NORM. Furthermore, total inventories of 226Ra, 228Ra and 40K in the sediment core were not differ very much between the stations. However, station SS3 in Section 4 displayed the highest inventories of 226Ra and 228Ra which may suggested that the input of Ra from the past mining activities was significant in the area. By comparing the heavy metal concentration in sediment with the average shale standard and New York Sediment quality Guideline, most of the stations in Section 3 and Section 4 exceed the standard. This may suggest that the anthropogenic activities and complex processes that occur in the estuary have elevated the concentration of heavy metals in the area. Moreover, the increased of Pb and Cd in bottom sediment may due to land use changes in Kuala Selangor in 19th century such as mining activities, land clearing for development, industrial and aquaculture and agriculture activities. Besides that, most of the stations in Section 3 showed high inventories of Pb, Cd and Ni which may due to active industrial, agricultural and aquacultural activities along the Sungai Selangor and Kuala Selangor coastal area and also high sedimentation rate in the area. The external hazard index (Hex) in all location is lower than the permissible value which is 1 and the Igeo values have indicated that the quality of sediment in Section 1 and Section 2 was not polluted as compared to Section 3 and Section 4.
format	Thesis
author	Abdul Karim, Umi Kalsum
author_facet	Abdul Karim, Umi Kalsum
author_sort	Abdul Karim, Umi Kalsum
title	Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
title_short	Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
title_full	Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
title_fullStr	Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
title_full_unstemmed	Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim
title_sort	assessment of radionuclides and heavy metals distribution and inventories in kuala selangor coastal area / umi kalsum abdul karim
publishDate	2015
url	http://ir.uitm.edu.my/id/eprint/15597/ http://ir.uitm.edu.my/id/eprint/15597/1/TM_UMI%20KALSUM%20ABDUL%20KARIM%20AS%2015_5.pdf
first_indexed	2023-09-18T22:54:13Z
last_indexed	2023-09-18T22:54:13Z
_version_	1777417745107779584

Assessment of radionuclides and heavy metals distribution and inventories in Kuala Selangor coastal area / Umi Kalsum Abdul Karim

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