Vertical Profile of 210PB in the Sediment Core of the Kuala Selangor, Malaysia
Choong, Chee Choy, and Zaharuddin Ahmad, and Che Abdul Rahim Mohamed, (2007) Vertical Profile of 210PB in the Sediment Core of the Kuala Selangor, Malaysia. Malaysian Journal of Analytical Sciences, 11 (1). pp. 274-279. ISSN 13942506 Full text not available from this repository. Official URL: http://pkukmweb.ukm.my/~mjas/v11_n1/41_153A1_DK_Rahim_Chong_Edited[1]-format.pdf AffiliationsUniversiti Kebangsaan Malaysia, Faculty Science and Technology, Marine Ecosystem Research Center
Malaysian Institute for Nuclear Technology Research
Universiti Kebangsaan Malaysia, Faculty Science and Technology, Marine Ecosystem Research Center AbstractThe activities of 210Pb was measured to establish the sediment accumulation rates and mixing layer at four studies location (river, estuary and ocean) in the coastal water of Kuala Selangor on February 2, 2005. Sediment cores were collected using a gravity core, which the core sample were taken by inserting a PVC plastic pipe enclosed in a cast-iron tube and it pushed manually as far down as possible. Sediment cores were cut at 3 cm interval for each layer. About 1 ml of 1000 ppm Be, 1 ml of 20 mg/ml PbNO3 and 1 ml of 25 mg/ml FeCl3 were spiked into 1-2 g of dried homogenized sediment and continue purify with the cation resin column. The precipitation of 210Pb was counted using the alpha-beta spectrometry at Malaysian Institute Nuclear for Technology. Sedimentation and mixing rates were ranged from 0.10 cm/yr to 0.2 cm/yr and 0.338 cm2/yr to 2.267 cm2/yr, respectively. The thickness of mixing layer at locations ranged from surface to 20 cm depth.
Penentuan aktiviti 210Pb dilakukan untuk mendapatkan kadar pemendapan dan lapisan pencampuran sediment di empat lokasi (sungai, muara dan laut) di persisir pantai Kuala Selangor pada 2 Februari 2005. Turus graviti diguna untuk mendapatkan teras sedimen, dimana paip PVC di masukkan ke dalam tiub besi dan kemudian dijatuhkan ke dasar laut sedalam yang boleh secara mekanikal. Teras sediment dipotong 3 cm untuk setiap lapisan. Sebanyak 1 ml 1000 ppm Be, 1 ml 20 mg/ml PbNO3 dan 1 ml 25 mg/ml FeCl3 dimasukkan ke dalam 1-2 g sedimen kering yang homogen dan seterusnya ditulinkan dengan mengguna turus resin kation. Precipitasi yang mengandungi 210Pb dibilang dengan Spectrometri Alfa-Beta di Institut Nuklear Malaysia. Kadar sedimentasi dan pencampuran berjulat dari 0.10 cm/yr hingga 0.2 cm/yr dan 0.338 cm2/yr hingga 2.267 cm2/yr, masing-masing. Ketebalan lapisan pencampuran berjulat dari permukaan hingga kedalaman 20cm. | Item Type: | Journal |
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| Additional Information: | This research was supported by the Grant IRPA : 09-02-02-0045-EA141. The authors would like to thank to the
staffs of Malaysian Institute of Nuclear Technology Research (MINT) for their help. |
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| Keywords: | 210Pb, Sedimentation rates, Mixing rates |
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| Subjects: | Q Science |
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| ID Code: | 1056 |
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