Radiotoxicity via intake of marine organisms: exposure and risk assessment in South Indians

Khan, M. Feroz; Benjamin, Jeben; Wesley, S. Godwin

doi:10.1080/02772248.2010.548118

Cited by 12 publications

(5 citation statements)

References 34 publications

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“…In marine organisms, anthropogenic 137 Cs was non-detectable in all cases. Present results are generally similar to those from studies in other parts of the world (14) , one exception being the detected presence by several others of 137 Cs in marine organisms (14,15) . Naturally occurring 226 Ra and 228 Ra radionuclides were typically undetected in sea water (Table 3), the one exception being for samples collected 50 km offshore, with activity concentrations of 226 Ra, 228 Ra and 40 K of 3.5, 2.7 and 15 Bq l 21 , respectively.…”

Section: Different Activity Indices and Their Calculationssupporting

confidence: 91%

The presence of natural radioactivity and 137Cs in the South China Sea bordering peninsular Malaysia

Amin

Mahat

Nor

et al. 2013

Radiation Protection Dosimetry

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The presence of natural radioactivity and (137)Cs has been investigated in fresh media obtained from South China Sea locations off the coast of peninsular Malaysia. The media include seafood, sea water and sediment. The samples were collected some weeks prior to the devastating 2011 Tōhoku earthquake and associated tsunami, the occurrence of which precipitated the Fukushima incident. All samples showed the presence of naturally occurring (226)Ra, (228)Ra and primordial (40)K, all at typically prevailing levels. The concentrations of natural radioactivity in molluscs were found to be greater than that of other marine life studied herein, the total activity ranging from 337 to 393 Bq kg(-1) dry weight. The total activity in sea water ranged from 15 to 88 Bq l(-1). Sediment samples obtained at deep sea locations more than 20 km offshore further revealed the presence of (137)Cs. The activity of (137)Cs varied from ND to 0.5 Bq kg(-1) dry weight, the activity increasing with offshore distance and depth. The activity concentrations presented herein should be considered useful in assessing the impact of any future radiological contamination to the marine environment.

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Section: Different Activity Indices and Their Calculationssupporting

confidence: 91%

The presence of natural radioactivity and 137Cs in the South China Sea bordering peninsular Malaysia

Amin

Mahat

Nor

et al. 2013

Radiation Protection Dosimetry

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“…are also known to enhance the naturally occurring radioactivity in the marine environment. In addition, there are anthropomorphic contributions from post-nuclear disposal of industrial and radioactive waste, underwater nuclear device tests, accidents including leaks from nuclear power plants and from reprocessing of spent nuclear fuel etc [ 2 , 5 – 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is particularly the cell wall structure of certain algae, fungi and bacteria which was found responsible for this phenomenon. Marine animal has tendency to burrow down in the bottom sea sediments and rocks, filtering on organic particles and algae along with tiny fishes and planktons, which may lead to increase the uptake of radioactive and heavy metals) of radionuclides and toxic/heavy metals from their surroundings, not least fish and shell fish relative to other marine life (e.g., molluscs, crustaceans, and fishes) [ 2 , 5 , 14 – 19 ]. Seafood (e.g., molluscs, crustaceans, and fishes) and their products can typically be one of the major sources of protein to populations in coastline regions, including those around the Straits of Malacca, one of the most important shipping lanes in the world, transporting about one-quarter of the world's traded goods [ 2 , 5 , 14 , 16 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…Marine animal has tendency to burrow down in the bottom sea sediments and rocks, filtering on organic particles and algae along with tiny fishes and planktons, which may lead to increase the uptake of radioactive and heavy metals) of radionuclides and toxic/heavy metals from their surroundings, not least fish and shell fish relative to other marine life (e.g., molluscs, crustaceans, and fishes) [ 2 , 5 , 14 – 19 ]. Seafood (e.g., molluscs, crustaceans, and fishes) and their products can typically be one of the major sources of protein to populations in coastline regions, including those around the Straits of Malacca, one of the most important shipping lanes in the world, transporting about one-quarter of the world's traded goods [ 2 , 5 , 14 , 16 , 20 , 21 ]. Approximately three million barrels of crude oil are shipped through the Straits daily, subjecting the sensitive marine environment to the threat of accidental oil spillage; over the 10-year period 1981–199, an average of two to three oil spill incidents per year were recorded in these waters [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Radiation and Heavy Metals Risk due to the Dietary Intake of Marine Fishes (Rastrelliger kanagurta) from the Straits of Malacca

et al. 2015

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The environment of the Straits of Malacca receives pollution as a result of various industrial and anthropogenic sources, making systematic studies crucial in determining the prevailing water quality. Present study concerns concentrations of natural radionuclides and heavy metals in marine fish (Rastrelliger kanagurta) collected from the Straits of Malacca, since aquatic stock form an important source of the daily diet of the surrouding populace. Assessment was made of the concentrations of key indicator radionuclides (226Ra, 232Th, 40K) and heavy metals (As, Mn, Fe, Cr, Ni, Zn, Cu, Co, Sr, Al, Hg and Pb) together with various radiation indices linked to the consumption of seafish. The annual effective dose for all detected radionuclides for all study locations has been found to be within UNSCEAR acceptable limits as has the associated life-time cancer risk. The overall contamination of the sampled fish from heavy metals was also found to be within limits of tolerance.

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“…In the present study, the summed committed effective dose for adults was calculated to be 827.2 Sv · y -1 . The life time risk due to the intake of radionuclides was determined as per USEPA [23] and Khan et al [24]. It was calculated to be 4.07 × 10 -4 .…”

Section: Radioprotectionmentioning

confidence: 99%

Radionuclides in south Indian seafoods: A special focus on major contributing species

Wesley¹,

Khan²

2011

Radioprotection

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Abstract. Concentrations of natural radionuclides 238 U, 208 Tl ( 232 Th), 226 Ra, 210 Po, 210 Pb and 40 K, and fallout 137 Cs were determined in pelagic and demersal fishes which are of economic importance. Pelagic fishes concentrated more radionuclides in the muscle tissue when compared to benthic species. Similarly, teleosts registered more activity than elasmobranchs. Based on the activity levels in muscle, the intake, effective dose and lifetime risks to humans were estimated. The internal radiation doses received by fishes and human beings seem to be mainly due to 210 Po and 40 K. The fishes were found to be safe for consumption.

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Radiotoxicity via intake of marine organisms: exposure and risk assessment in South Indians

Cited by 12 publications

References 34 publications

The presence of natural radioactivity and 137Cs in the South China Sea bordering peninsular Malaysia

The presence of natural radioactivity and 137Cs in the South China Sea bordering peninsular Malaysia

Assessment of Radiation and Heavy Metals Risk due to the Dietary Intake of Marine Fishes (Rastrelliger kanagurta) from the Straits of Malacca

Radionuclides in south Indian seafoods: A special focus on major contributing species

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