학술논문
Estimation of sedimentation rates using 210 Pb and 210 Po at the coastal water of Sabah, Malaysia
Document Type
Original Paper
Source
Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry. April 2003 256(1):115-120
Subject
Language
English
ISSN
0236-5731
1588-2780
1588-2780
Abstract
Sediment cores were obtained from Teluk Brunei, Sipitang, Teluk Kimanis, Kota Kinabalu and Kuala Penyu at the coastal water of Sabah and analyzed for 210 Pb and 210 Po to estimate the sedimentation rates. The calculated sedimentation rates of 210 Pb and 210 Po varied from 0.003 to 0.049 cm/y and 0.74 to 8.77 cm/y, respectively. The highest sedimentation rates were determined for 210 Pb and 210 Po at stations located at Sipitang (mean: 0.027 cm/y) and Teluk Kimanis (mean: 5.53 cm/y), respectively. The sedimentation rate estimated for 210 Pb is not fully reliable because the activity of 226 Ra was higher than that of 210 Pb and bioturbation was active at the sampling stations.