Spatial Distribution of Total 210Pb in the Marine Sediment of Peninsular Malaysia: Radioactivity Level Variations in the Sunda Shelf Seas
DOI:
https://doi.org/10.48048/tis.2023.6790Keywords:
210Pb, Sediment, Malacca Strait, Southern South China Sea, AndamanAbstract
Radiochemical separation techniques were applied to measure 210Pb radioactivity in samples to determine spatial distribution of total 210Pb radionuclide in surface sediments and water column for the main waters on the Sunda Shelf. The average 210Pb radioactivity level recorded for the Malacca Strait (MS) is significantly higher than that of the southern South China Sea (sSCS); this is attributed to the supply of input from the Andaman Sea in its northern areas, and massive terrestrial processes from bordering land masses. The results reveal that the decreasing trend of total 210Pb in Peninsular Malaysia’s marine sediment starts with the north maritime zone of Malacca Strait (64.28 ± 5.97 Bq/kg) > south maritime zone of Malacca Strait (50.88 ± 6.15 Bq/kg) > east maritime zone of sSCS (41.01 ± 3.07 Bq/kg) > south maritime zone of sSCS (40.78 ± 3.16 Bq/kg). The Kelantan and Pahang Deltas have been identified as two of the main anthropogenic sources of input for total 210Pb in the sSCS with atmospheric transboundary mobilization affecting total 210Pb in the water column. In the Malacca Strait, however, the distribution of total 210Pb might be influenced mainly by in situ processes of the strait’s seafloor and sources origin of sediment.
HIGHLIGHTS
- The Malacca Strait has a significantly higher level of 210Pb radioactivity compared to the southern South China Sea (sSCS), due to input from the Andaman Sea and terrestrial processes from adjacent land masses
- The decreasing trend of total 210Pb in Peninsular Malaysia’s marine sediment starts with the north maritime zone of Malacca Strait > south maritime zone of Malacca Strait > east maritime zone of sSCS > south maritime zone of sSCS
- The Kelantan and Pahang Deltas are identified as two of the main anthropogenic sources of input for total 210Pb in the sSCS, while in the sh Strait, the distribution of total 210Pb may be influenced mainly by in situ processes of the strait’s seafloor and sources origin of sediment
GRAPHICAL ABSTRACT
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KK Liu, SY Chao, PT Shaw, GC Gong, CC Chen and TY Tang. Monsoon-forced chlorophyll distribution and primary production in the South China Sea: Observations and a numerical study. Deep Sea Res. Oceanogr. Res. Paper. 2002; 49, 1387-412.
L Alam, CAR Mohamed, NAN Arifin and MB Mokhtar. A study on seasonal variations of Po-210 levels in a coal burning power station area of Malaysia. Indian J. Geo Mar. Sci. 2015; 20, 376-83.
SM Johari and CAR Mohamed. Atmospheric 210Pb changes during monsoon in east and west coast of Peninsular Malaysia. AIP Conf. Proc. 2014; 1584, 216.
CAR Mohamed, TL Theng and Z Ahmad. Inventory and flux of 210Po and 210Pb in the water column of southern South China Sea and Malacca Straits. Coast. Mar. Sci. 2006; 30, 379-86.
AA Sabuti and CAR Mohamed. High 210Po activity concentration in the surface water of Malaysian seas driven by the dry season of the Southwest Monsoon (June-August 2009). Estuar. Coast. 2015; 38, 482-93.
MACA Rahim, AA Aproi, X Shi, S Liu, MM Ali, WZW Yaacob and CAR Mohamed. Distribution of chromium and gallium in the total suspended solid and surface sediments of sungai kelantan, kelantan, Malaysia. Sains Malaysiana 2019; 48, 2343-53.
NAB Saili and CAR Mohamed. Behavior of 210Po and 210Pb in shallow water region of Mersing estuary, Johor, Malaysia. Environ. Asia 2014; 7, 7-18.
Y Mei-Wo and ZU Wan-Mahmood. 226Ra, 228Ra and 228Ra/226Ra in surface marine sediment of Malaysia. J. Radioanal. Nucl. Chem. 2013; 295, 1465-72.
MACA Rahim, MM Ali, WZW Yaacob, AH Yusoff, S Liu, X Shi and CAR Mohamed. Source and sinks of 210Pb in oceanic margins of east coast Peninsular Malaysia. J. Asian Earth Sci. 2021; 215, 104812.
CR Kastelle, DK Kimura and SR Jay. Using 210Pb/226Ra disequilibrium to validate conventional ages in Scorpaenids (genera Sebastes and Sebastolobus). Fish. Res. 2000; 46, 299-312.
CAR Mohamed, ZU Wan Mahmood and Z Ahmad. Recent sedimentation of sediments in the coastal waters of Peninsular Malaysia. Pollut. Res. 2008; 27, 27-36.
N Manap, K Sandirasegaran, NS Syahrom and A Amir. Analysis of trace metal contamination in Pahang River and Kelantan River, Malaysia. MATEC Web Conferences 2019; 266, 04003.
R Hashim, TH Song, NZM Muslim and TP Yen. Determination of heavy metal levels in fishes from the lower reach of the kelantan river, Kelantan, Malaysia. Trop. Life Sci. Res. 2014; 25, 21-39.
N Tanaka, Y Takeda and S Tsunogai. Biological effect on removal of Th-234, Po-210 and Pb-210 from surface water in Funka Bay, Japan. Geochim. Cosmochim. Acta 1983; 47, 1783-90.
GH Keller and AF Richards. Sediments of the malacca strait, Southeast Asia. J. Sediment. Res. 1967; 37, 102-27.
J Wang, Q Zhong, M Baskaran and J Du. Investigations on the time-series partitioning of 210Pb, 207Bi and 210Po between marine particles and solution under different salinity and pH conditions. Chem. Geol. 2019; 528, 119275.
HS Yang, YA Kwon, GB Kim and SS Kim. Distributions of 226Ra and 228Ra in the surface Waters of East sea of Korea. Bull. Kor. Fish. Soc. 1992; 25, 399-405.
CAR Mohamed, TC Siang and Z Ahmad. Ratio of 210Po and 210Pb in fresh, brackish and saline water in Kuala Selangor river. Malays. J. Anal. Sci. 2007; 11, 93-7.
FP Carvalho. 210Pb and 210Po in sediments and suspended matter in the Tagus estuary, Portugal. Local enhancement of natural levels by wastes from phosphate ore processing industry. Sci. Total Environ. 1995; 159, 201-14.
I Nirdosh, WB Trembley and CR Johnson. Adsorption-desorption studies on the 226Ra-hydrated metal oxide systems. Hydrometallurgy 1990; 24, 237-48.
AS Zakaria. The geomorphology of Kelantan Delta (Malaysia). Catena 1975; 2, 337-49.
MU Khandaker, K Asaduzzaman, AF Bin Sulaiman, DA Bradley and MO Isinkaye. Elevated concentrations of naturally occurring radionuclides in heavy mineral-rich beach sands of Langkawi Island, Malaysia. Mar. Pollut. Bull. 2018; 127, 654-63.
M Leman. Pemuliharaan Geowarisan di Langkawi Geopark, Malaysia. Akademika 2010; 80, 19-30.
TA Przylibski. Concentration of 226Ra in rocks of the southern part of Lower Silesia (SW Poland). J. Environ. Radioact. 2004; 75, 171-91.
V Ramaswamy, PS Rao, KH Rao, S Thwin, NS Rao and V Raiker. Tidal influence on suspended sediment distribution and dispersal in the northern Andaman Sea and Gulf of Martaban. Mar. Geol. 2004; 208, 33-42.
KW Bruland, M Koide and ED Goldberg. The comparative marine geochemistries of lead 210 and radium 226. J. Geophys. Res. 1974; 79, 3083-6.
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