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

Khandaker, Mayeen Uddin; Asaduzzaman, Khandoker; Nawi, Saiful Mazwan; Usman, Ahmed; Amin, Yusoff Mohd; Daar, Eman; Bradley, D.A.; Ahmed, Hamdy O.; Okhunov, Abdurahim

doi:10.1371/journal.pone.0128790

Cited by 55 publications

(24 citation statements)

References 38 publications

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“…K 40 , Ra 226 and Th232 -were determined using a high-resolution, p-type coaxial HPGe γ-ray spectrometer (Canberra) shielded by cylindrical lead. Similarly described by Khandaker et al [19], the relative efficiency of the detector was 28.2% and energy resolution of 1.67 keV-FWHM at the 1.33 MeV peak of Co 60 . The gamma spectrometry systems uses the modelling software LabSOCS (Canberra) to determine the efficiency of the geometry used.…”

Section: Plos Onesupporting

confidence: 53%

“…This was done by digesting 0.5 g of each powdered coal sample in a PerkinElmer microwave digestion system (Multiwave 3000) using a 5 ml mixture of 65% concentrated HNO 3 (SpectrosoL grade) and 3 ml of H 2 O 2 (30%) for 10 minutes. Consequent to ensuring complete digestion of the samples, the solutions were cooled in a water bath, filtered (as per laboratory procedure), and brought up to a volume of 50 ml using ultra-pure water (18.2 MΩcm) in a volumetric flask [19]. Thereafter concentrations for U and Th were determined by ICP-MS.…”

Section: Plos Onementioning

confidence: 99%

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Quantification of U, Th and specific radionuclides in coal from selected coal fired power plants in South Africa

2020

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Most of South Africa's energy is derived from the combustion of coal in pulverized coal-fired power plants (CFPP). However, when compared with the rest of the world, limited information regarding the main radioactive elements (U and Th) and specific radionuclides of interest (K 40 , Ra 226 and Th 232) from South African CFPP is available in the public domain. This paper aims to quantify the U, Th and specific radionuclides found in the coal used in selected South African CFPP in comparison to world averages found in literature. The U and Th concentrations were obtained by ICP-MS. The main radionuclides, K 40 , Ra 226 and Th 238 , were quantified using gamma spectrometry. The U concentration and Th concentrations for the coal used in all the power plants was above the world average of 1.9 mg/kg and 3.2 mg/kg respectively. The coals with the highest Th content originated from the Mpumalanga power plant, while the U content in the Freestate power plant samples was the highest of the three. The concentrations of the K 40 were between 88.43±10.75-110.76±8.92 Bq/kg, which are inline with world averages of 4-785 Bq/kg. Similarly, the Ra 226 and Th 232 values were between 21.69±2.83-52.63±4.04 Bq/kg and 19.91±1.24-22.97±1.75 Bq/kg respectively, which are also in line with the world averages of 1-206 Bq/kg and 1-170 Bq/kg respectively. Radiological hazard indices such as radium equivalent (Ra eq); external hazard index (H ex) and internal hazard index (H in), that were estimated from these average radionuclide concentrations were less than the prescribed values found in literature. This indicated that no significant health risk was posed by the coal being used from these coal fields.

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Section: Plos Onesupporting

confidence: 53%

Section: Plos Onementioning

confidence: 99%

Quantification of U, Th and specific radionuclides in coal from selected coal fired power plants in South Africa

2020

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“…The estimated values commensurate with the acceptable limits, they are slightly higher as compared to other areas in the world having thorium rich monazite sand 9 . So it causes no significant health hazard to public health in terms of the cancer risk.…”

Section: Resultssupporting

confidence: 79%

Estimation of Carcinogenic Risk Through Ingestion of Locally Available Food Materials of South West Coast of India

Arunima¹,

Lekshmi²,

Jojo³

2018

jusps-A

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Primordial radionuclide in human habitats has always been a source of prolonged exposure. These can be transferred to humans through food chain. The assessment of intake of radionuclide through food is based on the activity concentration of the radio-isotopes in food and their average intake rate. The Life time cancer risk (LCR) is estimated due to the ingestion of commonly used food items of south west coast of Kerala as proposed by USEPA. The estimated carcinogenic risk due to commonly used food items is 3.39x10 -3 and that due to whole meal is 2.77x10 -3, which are in good agreement with the acceptable limits.

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“…Moreover, those four elements had levels 3 to 10 times lower in Indian mackerel from Seychelles compared to Malaysia waters (Agusa et al, 2005;Khandaker et al, 2015). Legal thresholds are inexistent for essential elements in…”

Section: Comparison With Literature and Reference Values For Essentiamentioning

confidence: 94%

Trace elements in oceanic pelagic communities in the western Indian Ocean

et al. 2017

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The mineral composition of target and non-target pelagic fish caught by purse-seiners and longliners in the western-central Indian Ocean was determined. From the ten essential elements analysed, selenium and zinc showed the highest concentrations in swordfish and blue marlin while Indian mackerel appeared as a good source of copper, iron and chrome. All catch had levels of lead and cadmium, two toxic elements, below the maximum sanitary limits. Although some concerns were raised regarding mercury concentrations in the largest species (wahoo, swordfish and blue marlin), molar ratios of mercury and selenium indicate that all oceanic pelagic fish from the western-central Indian Ocean are safe for human consumption. This study also gives insights on the relationships between the levels of essential and toxic elements in fish muscle and the size, trophic position and diet sources of the studied pelagic species.

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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

Cited by 55 publications

References 38 publications

Quantification of U, Th and specific radionuclides in coal from selected coal fired power plants in South Africa

Quantification of U, Th and specific radionuclides in coal from selected coal fired power plants in South Africa

Estimation of Carcinogenic Risk Through Ingestion of Locally Available Food Materials of South West Coast of India

Trace elements in oceanic pelagic communities in the western Indian Ocean

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