Radionuclides in Fish of the Chernobyl Exclusion Zone: Species-Specificity, Seasonality, Size- And Age-Dependent Features of Accumulation

Kaglyan, A. Ye.; Gudkov, D. I.; Klenus, V. G.; Yurchuk, L.P.; Nazarov, A. B.; Pomortseva, Natalia; Shirokaya, Z. O.; Shevtsova, N. L.

doi:10.21175/radj.2016.02.020

Cited by 3 publications

(4 citation statements)

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“…Satisfactory microbiological indicators must confirm the safety of fish products, and the residual amounts of salts of heavy metals (cadmium, zinc, copper, arsenic, mercury; decarboxylation products of amino acidshistamine and nitrosamines; pesticides, radionuclides) must not exceed the maximum allowable levels (MAL) [7], [28], [34], [40], [45], [50], [63], [69], [82], [83]. A wide range of indicators to confirm the good quality of fish products is explained by the fact that fish is often the cause of serious food poisoning, sometimes fatal [11], [29], [54].…”

Section: Introductionmentioning

confidence: 99%

The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

Liasota

Bukalova

Богатко

et al. 2023

Potr. S. J. F. Sci.

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Scientifically substantiated and experimentally proven the feasibility of conducting proper risk-based control of the safety and quality of freshwater fish in the Kyiv region's agro-food markets following the regulatory document's requirements, developed by express, improved methods for determining freshness and microstructural examination of muscle tissue. At organoleptic assessmentUkrainian scaly carp, crucian carp, and pike perch were fresh, and rotan was of dubious freshness. Regarding pH value, Nesler number, and qualitative reaction to the content of ammonia and ammonia salts with ’Nesler’s reagent, the meat of Ukrainian scaly carp, crucian carp, and pike perch corresponded to fish of a fresh degree. For rotan meat, its dubious freshness was established. In the photometric determination of the studied fish's freshness, the optical density of the supernatant correlated with the quality indicators for the content of ammonia and ammonia salts. An improved benzidine test with a filtrate from the gills of the mouth confirms the doubtfulness of the freshness of the fish. The studied fish samples corresponded to the standard indicators according to microscopic indicators and the number of mesophilic aerobic and facultative anaerobic microorganisms. By determining the chemical parameters of the studied fish, it was found that the mass fraction of water in meat was the highest in rotan (78.30 ±0.13%) and was accompanied by the smallest mass fraction of dry matter (21.70 ±0.09), the proportion of proteins (16.96 ±0.06), indicators of fat in meat (3.01 ±0.06%) and formed the lowest indicator of its relative biological value – 92.5%. In benign fish with organoleptic indicators, a microstructural study of muscle tissue revealed significant changes in its structure with atrophy of individual muscle fibers and growth in these areas of connective, mainly fatty tissue.

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Section: Introductionmentioning

confidence: 99%

The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

Liasota

Bukalova

Богатко

et al. 2023

Potr. S. J. F. Sci.

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“…Питома активність 137 Cs та 90 Sr в рибі зараз досягає десятків кБк•кг -1 при вмісті у воді о. Глибоке цих радіонуклідів на рівні 3-5 Бк•л -1 і 50 -100 Бк•л -1 , відповідно [7][8][9][10][11]. При цьому, приблизно, 55-67% 137 Cs міститься у м'язовій тканині риб, а в кістковій тканині і лусці -до 91-97% активності 90 Sr [5,6]. Основний внесок в дозу внутрішнього опромінення риб дає 90 Sr, а зовнішнього - 137 Cs, який міститься в донних відкладах озера [5,8].…”

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“…Такі значення відповідають рівноважним коефіцієнтам накопичення (CF, відношення питомої активності радіонукліда в тканині риб (Бк•кг -1 ) до питомої активності у воді (Бк•л(кг) -1 ) для карася -1860 ± 615 та лина -960 ± 280. Питома активність 90 Sr в м'язовій тканині карасів була на порядок менша у порівнянні з 137 Cs і становила лише 0.5 ± 0.3 кБк•кг -1 (CF = 5 ± 3), при цьому питома активність 90 Sr в кістковій тканині карасів та кБк•кг -1 ), що співпадає з літературними даними [6,7]. Жодних статистично значущих залежностей питомої активності 137 Cs в м'язовій (рис.…”

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“…2а) і 90 Sr в кістковій (рис. 2) тканинах аборигенних краснопірок від її маси, або сезону року за час спостереження встановлено не було, що відповідає літературним даним [6,7]. Питома активність 90 Sr і 137 Cs в печінці риб була на рівні м'язової тканини, в той час як [238][239][240] Pu (до 30 Бк•кг -1 ) і 241 Am (до 50 Бк•кг -1 ) -на порядок більше, в порівнянні з м'язовою тканиною.…”

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Radioactive Contamination and Doses of Internal Irradiation of Fish in the Deep Lake of the Chornobyl Exclusion Zone

Hrechaniuk¹,

Kashparova²,

Pavlenko³

et al. 2022

Naukovì dopovìdì Nacìonalʹnogo unìversitetu bìoresursìv ì priro

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After the accidents at the Chornobyl and Fukushima NPPs, the specific activity of radionuclides in fish in radioactively contaminated reservoirs reached hundreds of kBq kg-1. Over time, as the radiological situation improved, there was a decrease in radioactive contamination of fish, but even now there are cases of exceeding the permissible levels of radionuclides in food. This work aimed to determine in real conditions the content of 90Sr and 137Cs in different species of fish in one of the most radioactively contaminated reservoirs of the Chornobyl Exclusion Zone - Glubokoye lake. As a result of experimental studies conducted from 2016 to 2021, the values of the specific activity of 90Sr and 137Cs in different species of fish were obtained, which were hundreds of times higher than the permissible levels. It is shown that without the use of countermeasures, this situation will persist for several decades. The results show that the internal radiation doses of fish due to the level of their radioactive contamination do not exceed the permissible levels recommended by international organizations for radiation protection of the environment.

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90Sr adsorption from the aquatic environment of Chornobyl exclusion zone by chemically enhanced TiO2

Mironyuk¹,

Mykytyn²,

Kaglyan³

et al. 2020

Nucl. Phys. At. Energy

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This paper describes the testing of titanium dioxide, chemically modified by arsenate groups, as an adsorbent of 90Sr from the component of aquatic ecosystems of the Chornobyl exclusion zone. It is shown, that the chemical composition of the aquatic environment impacts 90Sr adsorption. The 4As-TiO2 adsorbent reduces the activity of some samples by almost 100 %, which indicates selectivity and high adsorption capacity of the adsorbent in relation to 90Sr. In some experiments, this value reached 100 %, and the activity was reduced to the level of the maximum permissible 90Sr concentration.

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Radionuclides in Fish of the Chernobyl Exclusion Zone: Species-Specificity, Seasonality, Size- And Age-Dependent Features of Accumulation

Cited by 3 publications

References 1 publication

The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

Radioactive Contamination and Doses of Internal Irradiation of Fish in the Deep Lake of the Chornobyl Exclusion Zone

90Sr adsorption from the aquatic environment of Chornobyl exclusion zone by chemically enhanced TiO2

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