Abstract
Seawater, sediment, biota and seaweed samples were collected in the Malaysian Economic Exclusive Zone (EEZ) marine environment within April 2012 to April 2014 as part of the marine radioactivity monitoring activities following the Fukushima Daiichi Nuclear Power (FDNPP) accident. The objectives of this study were to quantify radioactivity releases of Cs-134 and Cs-137 from the FDNPP into the Malaysian EEZ marine environment and to evaluate its potential impact on radionuclide levels in the marine life. The results showed Cs-134 in seawater, sediment and; biota and seaweeds were ranged from 1.3 to 2.2 Bq m−3, 1 to 1.9 Bq kg−1 dw. and < 0.01 to 0.2 Bq kg−1 fw., respectively. The levels of Cs-137 and Cs-134 as a radioisotopic signature for FDNPP discharges indicated that no new inputs into Malaysian marine environment, thus definitely confirmed the radioactive water released from FDNPP accident does not contaminate our marine environment. The estimated total dose and risk quotient using ERICA Assessment Tool showed the Cs-137 activity concentration in Malaysian marine environment was far below the screening value and does not cause any risk to the living organism. Thus, all our seafood including seaweeds are safe for human consumption.
Similar content being viewed by others
References
Budyansky MV, Goryachev VA, Kaplunenko DD, Lobanov VB, Prants SV, Sergeev AF, Shlyk NV, Uleysky MY (2015) Role of mesoscale eddies in transport of Fukushima-derived cesium isotopes in the ocean. Deep Sea Res Part I Oceanogr Res Pap 96:15–27
Prants SV, Budyansky MV, Uleysky MY (2017) Lagrangian simulation and tracking of the mesoscale eddies contaminated by Fukushima-derived radionuclides. Ocean Sci Discuss 1–13
Tsumune D, Tsubono T, Aoyama M, Hirose K (2012) Distribution of oceanic 137Cs from the Fukushima Daiichi Nuclear Power Plant simulated numerically by a regional ocean model. J Environ Radioact 111:100–108
Kanda J (2013) Continuing 137Cs release to the sea from the Fukushima Daiichi Nuclear Power Plant through 2012. Biogeosciences 10:6107–6113
IAEA, International Atomic Energy Agency (2011) Briefings on Fukushima nuclear accident. www.iaea.org. Accessed 12 Aug 2016
Kumamoto Y, Aoyama M, Hamajima Y, Aono T, Kouketsu S, Murata A, Kawano T (2014) Southward spreading of the Fukushima derived radiocesium across the Kuroshio extension in the North Pacific. Sci Rep 4:1–9
Institut de Radioprotection et de Sûreté Nucléaire (IRSN) (2011) Impact on marine environment of radioactive releases resulting from the Fukushima-Daiichi nuclear accident, 9 pp. (http://www.irsn.fr/EN/newsroom/News/Documents/IRSN_Fukushima-Accident_Impact-on-marine-environment-EN_20110513.pdf). Accessed 12 Aug 2016
UNCEAR (2013) Report. Volume 1: report to the General Assembly, Annex A: levels and effects of radiation exposure due to the nuclear accident after the 2011 great east-Japan earthquake and tsunami. United Nations, October 2014, p 26
Aoyama M, Hamajima Y, Hult M, Uematsu M, Oka E, Tsumune D, Kumamoto Y (2016) 134Cs and 137Cs in the North Pacific Ocean derived from the March 2011 TEPCO Fukushima Daiichi Nuclear Power Plant accident, Japan. Part one: surface pathway and vertical distributions. J Oceanogr 72:53–65
TEPCO, Tokyo Electric Power Company (2011) Result of radioactive nuclide analysis around Fukushima Daiichi Nuclear Power Station, http://www.tepco.co.jp/en/press/corp-com/release/11042103-e.html. Access 11 Aug 2017
Aoyama M, Kajino M, Tanaka TY, Sekiyama TT, Tsumune D, Tsubono T, Hamajima Y, Inomata Y, Gamo T (2016) 134Cs and 137Cs in the North Pacific Ocean derived from the March 2011 TEPCO Fukushima Daiichi Nuclear Power Plant accident, Japan. Part two: estimation of 134Cs and 137Cs inventories in the North Pacific Ocean. J Oceanogr 72:67–76
Masson O, Baeza A, Bieringer J, Brudecki K, Bucci S, Cappai M, Carvalho FP, Connan O, Cosma C, Dalheimer A, Didier D, Depuydt G, De Geer LE, De Vismes A, Gini L, Groppi F, Gudnason K, Gurriaran R, Hainz D, Halldorsson O, Hammond D, Hanley O, Holey K, Homoki ZS, Ioannidou A, Isajenko K, Jankovick M, Katzlberger C, Kettunen M, Kierepko R, Kontro R, Kwakman PJM, Lecomte M, Leon Vintro L, Leppanen A-P, Lind B, Lujaniene G, Mc Ginnity P, Mc Mahon C, Mala H, Manenti S, Manolopoulou M, Mattila A, Mauring A, Mietelski JW, Møller BS, Nielsen P, Nikolick J, Overwater RMW, Palsson SE, Papastefanou C, Penev I, Pham MK, Povinec PP, Rameback H, Reis MC, Ringer W, Rodriguez A, Rulık P, Saey PRJ, Samsonov V, Schlosser C, Sgorbati G, Silobritiene BV, Soderstrom C, Sogni R, Solier L, Sonck M, Steinhauser G, Steinkopff T, Steinmann P, Stoulos S, Sykora I, Todorovic D, Tooloutalaie N, Tositti L, Tschiersch J, Ugron A, Vagena E, Vargas A, Wershofen AH, Zhukova O (2011) Tracking of airborne radionuclides from the damaged Fukushima Daiichi nuclear reactors by European networks. Environ Sci Technol 45:7670–7677
Buesseler K, Aoyama M, Fukasawa M (2011) Impacts of the Fukushima nuclear power plants on marine radioactivity. Environ Sci Technol 45:9931–9935
Buesseler KO, Jayne SR, Fisher NS, Rypina II, Baumann H, Baumann Z, Breier CF, Douglass EM, George J, Macdonald AM, Miyamoto H, Nishikawa J, Pike SM, Yoshida S (2012) Fukushima-derived radionuclides in the ocean and biota off Japan. Proc 20 Natl Acad Sci USA 109:5984–5988
Aoyama M, Tsumune D, Hamajima Y (2012) Distribution of 137Cs and 134Cs in the North Pacific Ocean: impacts of the TEPCO Fukushima Daiichi NPP accident. J Radioanal Nucl Chem 296:535–539. https://doi.org/10.1007/s10967-012-2033-2
Honda MC, Aono T, Aoyama M, Hamajima Y, Kawakami H, Kitamura M, Masumoto Y, Miyazawa Y, Takigawa M, Saino T (2012) Dispersion of artificial caesium-134 and -137 in the Western North Pacific 1 month after the Fukushima accident. Geochem Geochem J 46:1–9
Inoue M, Kofuji H, Hamajima Y, Nagao S, Yoshida K, Yamamoto M (2012) 137Cs activities in coastal seawater along Northern Sanriku and Tsugaru Strait, northeastern Japan, after Fukushima Daiichi Nuclear Power Plant accident. J Environ Radioact 111:116–119
Vives IBJ, Aoyama M, Bradshaw C, Brown J, Buesseler KO, Casacuberta N, Christl M, Duffa C, Impens NREN, Iosjpe M, Masqué P, Nishikawa J (2018) Marine radioecology after the Fukushima Daiichi nuclear accident: Are we better positioned to understand the impact of radionuclides in marine ecosystems? Sci Total Environ 618:80–92
Aoyama M, Uematsu M, Tsumune D, Hamajima Y (2013) Surface pathway of radioactive plume of TEPCO Fukushima NPP1 released 134Cs and 137Cs. Biogeosciences 10:3067–3078
Behrens E, Schwarzkopf F, Lübbecke J, Böning CW (2012) Model simulations on the long-term dispersal of 137Cs released into the Pacific Ocean off Fukushima. Environ Res Lett 7:1–10
Nakano M, Povinec PP (2012) Long-term simulations of the 137Cs dispersion from the Fukushima accident in the world ocean. J Environ Radioact 111:109–115
Liu Q, Feng M, Wang D (2011) ENSO-induced interannual variability in the southeastern South China sea. J Oceanogr 67:127–133
Livingston HD, Povinec PP (2000) Anthropogenic marine radioactivity. Ocean Coast Manage 43:689–712
Livingston HD, Povinec PP (2002) A millennium perspective on the contribution of global fallout radionuclides to ocean science. Health Phys 82:656–668
Aarkrog A, Baxter MS, Bettencourt AO, Bojanowski R, Bologa A, Charmasson S, Cunha I, Delfanti R, Duran E, Holm E, Jeffree R, Livingston HD, Mahapanyawong S, Nies H, Osvath I, Pingyu L, Povinec PP, Sanchez A, Smith JN, Swift D (1997) A comparison of doses from 137Cs and 210Po in marine food: a major international study. J Environ Radioact 34:69–90
Wo YM, Ahmad Z (2004) Determination of 137Cs in seawater surrounding Peninsular Malaysia—a case study. J Nucl Relat Tech 1(2):17–26
Wo YM, Ishak AK, Ahmad Z (2006) Determination of radiocaesium composition in east Malaysia seawater. J Nucl Relat Tech 3(1&2):51–58
Takata H, Kusakabe M, Inatomi N, Hasegawa K, Ikenoue T, Watanabe W, Watabe T, Suzuki C, Misonoo J, Morizono S (2017) Long-term distribution of radioactive cesium in the coastal seawater and sediments of Japan. Rep Mar Ecol Res Inst No 22(Supplement):17–25
Duran EB, Povinec PP, Fowler SW, Airey PL, Hong GH (2004) 137Cs and 239+240Pu levels in the Asia-Pacific regional seas. J Environ Radioact 76:139–160
Yamada M, Zheng J, Wang Z-L (2006) 137Cs, 239+240Pu and 240Pu/239Pu atom ratios in the surface waters of the western North Pacific Ocean, eastern Indian Ocean and their adjacent seas. Sci Total Environ 366:242–252
Men W, He J, Wang F, Wen Y, Li Y, Huang J, Yu X (2015) Radioactive status of seawater in the northwest Pacific more than 1 year after the Fukushima nuclear accident. Sci Rep 5(7757)
Kumamoto Y, Aoyama M, Hamajima Y, Nishino S, Murata A, Kikuchi T (2017) Radioceasium in the western subarctic area of the north Pacific Ocean, Bering Sea, and Arctic Ocean in 2013 and 2014. Appl Radiat Isot 126:88–92
Kumamoto Y, Aoyama M, Hamajima Y, Nishino S, Murata A, Kikuchi T (2016) Meridional distribution of Fukushima-derived radioceasium in surface seawater along a trans-Pacific line from the Arctic to Antartic Oceans in summer 2012. J Radianal Nucl Chem 307:1703–1710
Szymczak R (2016) Marine benchmark study on the possible impact of the Fukushima radioactive releases in the Asia-Pacific region (IAEA/RCA Project RAS/7/021). 2011–2015 Regional Project Final Technical Report, January 2016, p. 69
Kawai H, Kitamura A, Mimura M, Mimura T, Tahara T, Aida D, Sato K, Sasaki H (2014) Radioactive cesium accumulation in seaweeds by the Fukushima 1 Nuclear Power Plant accident-2 years’ monitoring at Iwaki and its vicinity. J Plant Res 127(1):23–42
International Atomic Energy Agency (2004) Sediment distribution coefficients and concentration factors for biota in the marine environment. IAEA Technical Reports Series No. 422. IAEA Vienna
Povinec PP, Aoyama M, Biddulph D, Breier R, Buesseler K, Chang CC, Golser R, Hou XL, Ješkovský M, Jull AJT, Kaizer J, Nakano M, Nies H, Palcsu L, Papp L, Pham MK, Steier P, Zhang LY (2013) Cesium, iodine and tritium in NW Pacific waters—a comparison of the Fukushima. Biogeosci Discuss 10:6377–6416
Mahmood ZUW, Ishak AK, Mohamed N, Wo YM, Samuding K (2015) Pemetaan keradioaktifan marin di Malaysi. Dewan Bahasa dan Pustaka, Kuala Lumpur, p 296
Adziz MIA, Bakar ASA, Wo YM, Md Jaffary NA (2010) Distribution of 137Cs in surface seawater and sediment around Sabah’s Sulu Sulawesi sea. In: Seminar Kedua Ekspedisi Pelayaran Saintifik Perdana. Permai Inn, Kuala Terengganu, Terengganu, 24–25 July 2010
Acknowledgements
This study was supported by the research Grant Science Fund (04-03-01-SF0128) from the Ministry of Science, Technology and Innovation (MOSTI), Malaysia. The authors would like to thank to our former laboratory manager i.e. Dr. Abdul Kadir Ishak and all staff of the Radiochemistry and Environment Group (RAS), Nuclear Malaysia, who were involved in samplings, preparation and sample analysis, as well as the captain and crews of KL CERMIN that had helped in the sample collection during the marine sampling expedition. Our thank also goes to the Malaysia Department of Marine Parks, Sabah Parks and Bintulu Port Authority, which had given access to the sampling stations and provided logistic support for the seawater samplings.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wan Mahmood, Z.U., Yii, M.W., Khalid, M.A. et al. Marine radioactivity of Cs-134 and Cs-137 in the Malaysian Economic Exclusive Zone after the Fukushima accident. J Radioanal Nucl Chem 318, 2165–2172 (2018). https://doi.org/10.1007/s10967-018-6306-2
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10967-018-6306-2