scholarly journals Zeolite and bentonite as caesium binders in reindeer feed

Rangifer ◽  
1990 ◽  
Vol 10 (3) ◽  
pp. 73 ◽  
Author(s):  
Birgitta Åhman ◽  
Sevald Forberg ◽  
Gustaf Åhman
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Intestinal Tract ◽  
Activity Concentration ◽  
Chernobyl Nuclear Power Plant ◽  
The Body ◽  
Feeding Experiments ◽  
Activity Concentrations ◽  
Gastro Intestinal Tract

The effects of zeolite and bentonite on the accumulation and excretion of radiocaesium (Cs-137) in reindeer were studied in two feeding experiments. Six animals in each experiment were given lichens contaminated with radiocaesium from fallout after the Chernobyl nuclear power plant accident. In addition, they were fed pellets containing bentonite (Experiment I) or zeolite (Experiment II). Two animals, controls, in each experiment received no caesium-binder. The activity concentration of radiocaesium in blood was used to evalute the radiocaesium level in the body. Faeces and urine were collected to measue the excration of radiocaesium. The animals in Experiment I were depleted of radiocaesium before the start of the experiment. After three weeks, with an intake of 17 - 18 kBq Cs-137/day, the controls had reached activity concentrations of radiocaesium in blood corresponding to 4 - 4.5 kBq Cs-137/kg in muscle. Reindeer fed 23 or 46 g of bentonite per day stabilized at values below 0.8 kfiq/kg in muscle. In Experiment II, the reindeer started with radiocaesium activity concentrations in blood corresponding to 2 - 4.5 kBq Cs-137/kg in muscle. After four weeks of feeding, with an intake at about 8.5 kBq Cs-137/day, controls had increased their radiocaesium values by an average of 40%. Reindeer receiving 25 or 50 g zeolite per day decreased with 18 and 45%, respectively. Net absorption of radiocaesium from the gastro-intestinal tract was calculated at 50 -70% in animals receiving no caesium-binder. Reindeer fed bentonite had an absorption below 10% while those fed zeolite absorbed around 35%.

scholarly journals STUDIES OF 137CS TRANSFER IN SOIL‐FERN SYSTEM

2005 ◽  
Vol 13 (3) ◽  
pp. 97-102 ◽  
Author(s):  
Donatas Butkus ◽  
Marina Konstantinova
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Transfer Factor ◽  
Nuclear Power ◽  
Activity Concentration ◽  
Root Systems ◽  
137Cs Activity ◽  
Chernobyl Nuclear Power Plant ◽  
Activity Concentrations ◽  
Better Than

Fern accumulates radionuclides in abundance, including 137Cs. Tranfer of 137Cs and 40K in plants which have different root systems (fern or grass), or have no roots at all (moss) was compared. Samplings were performed in regions contaminated with 137Cs after Chernobyl Nuclear Power Plant (ChNPP) accident in 1994 and 1997–2000. The male fern (Dryopteris filix‐mas) most prevailing in Lithuania was studied. Fern accumulates 137Cs more effectively than grass or moss. The average 137Cs activity concentration in fern is 180±60 Bq kg−1 and the transfer factor is 0,074 m2kg−1. The fern stipe accumulates 137Cs most of all (200±90 Bqkg‐1), the transfer factor is 0,087 m2 kg−1. Accumulation of 137Cs is influenced by the content of K in the soil. 137Cs and 40K activity concentrations in fern are higher than those in the soil what shows that fern accumulates 137Cs better than 40K. Fern can clean the soil because this plant accumulates radionuclides in its stipe rather than roots.

scholarly journals Radioactivity in food in Belgrade city

2010 ◽  
Vol 64 (5-6) ◽  
pp. 385-392
Author(s):  
Gordana Vitorovic ◽  
Branislava Mitrovic ◽  
Svetlana Grdovic ◽  
Branko Petrujkic ◽  
Dusko Vitorovic
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Chernobyl Nuclear Power Plant ◽  
Spectrometric Method ◽  
Wild Animals ◽  
Animal Products ◽  
Activity Concentrations ◽  
The City ◽  
Fish Activity

The activity concentrations of 40K, 238U, 226Ra, 232Th and 137Cs were measured using the gamma spectrometric method in different food chain samples from the area of the City of Belgrade during the periods May-June 2007 and May-June 2008. Relatively high activities of 40K and 137Cs were detected in the soil. These results indicate that 137Cs is present in the area of Belgrade even 20 years after the nuclear accident in the Chernobyl nuclear power plant. However, in the samples of feedstuffs, animal products and bio indicators (meat of wild animals and fish), activity concentrations of primordial radionuclides and 137Cs were low and below the detection limits. The results of these trials have shown that investigated animal products from the natural environment around Belgrade are radioactivity safe.

scholarly journals Screening for the 137Cs body burden owing to the Chernobyl accident in Zhytomyr region, Ukraine: 2009–2018

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245491
Author(s):  
Yesbol Sartayev ◽  
Jumpei Takahashi ◽  
Alexander Gutevich ◽  
Naomi Hayashida
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Body Burden ◽  
Chernobyl Nuclear Power Plant ◽  
The Body ◽  
Internal Exposure ◽  
Whole Body ◽  
Seasonal Effect ◽  
Low Grade

The Chernobyl Nuclear Power Plant accident released vast amounts of various fission products, of which 131I and 137Cs are considered the most important because they are a major source of radiation exposure to the general public. 137Cs, unlike 131I, has a 30-year half-life that continues to expose people internally and externally for several decades after being deposited into the ground. 137Cs can be easily transmitted to the body through the intake of products and wild forest foodstuffs produced in contaminated areas. In the early phase, external exposure to 137Cs was predominant; however, it gradually diminished, mostly owing to horizontal and vertical distribution, and internal exposure started gaining dominance. Prior studies have shown that people in the affected areas have been constantly subjected to the inevitable low-grade internal exposure, which in turn has led to high anxiety and concern regarding the potential health effects. The present 10-year study assessed the latest status of the body burden among residents of the contaminated parts of the Zhytomyr region of Ukraine by measuring the internal concentration of 137Cs using the whole-body counter installed at the Medical Center of Korosten city. Almost 110 000 examinees from eight different districts were screened between 2009 and 2018. The study area was situated to the west of Chernobyl, which experienced a significant fallout of 137Cs and 131I from the Chernobyl Nuclear Power Plant. We analyzed the data for internal exposure to 137Cs by obtaining the actual magnitude, pace, and pattern of change for each year. During the study, the average 137Cs concentration in residents fell from 21.6 Bq/kg at the beginning of the study to 3.0 Bq/kg at the end of the study. The proportion of examinees with detectable levels had also fallen rapidly, from 45% to 11%. We found a weaker seasonal effect and a significantly higher Bq/kg concentration in adolescents than in other age groups.

scholarly journals Large Carnivores of the Chernobyl Nuclear Power Plant Exclusion Zone

2012 ◽  
Vol 46 (3) ◽  
pp. e-21-e-28 ◽  
Author(s):  
M. Shkvyria ◽  
D. Vishnevskiy
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Species Composition ◽  
Nuclear Power ◽  
Chernobyl Nuclear Power Plant ◽  
Large Carnivores ◽  
Exclusion Zone ◽  
Animal Group ◽  
Large Predators

Large Carnivores of the Chernobyl Nuclear Power Plant Exclusion Zone During nine years observations on large carnivores of Exclusion Zone have been carried out. Species composition and the number of large predators in the Exclusion Zone correspond to the regional conditions. The presence of bears and permanent stay of the lynx in the Exclusion Zone was confirmed. Six wolf packs were counted. The use of an anthropogenically transformed areas, the shift of the daily regime of activity and characteristics of the diet are the most specific features of this animal group.

scholarly journals ENVIRONMENTAL PROBLEMS ASSOCIATED WITH DECOMMISSIONING THE CHERNOBYL NUCLEAR POWER PLANT COOLING POND

2010 ◽  
Vol 99 (5) ◽  
pp. 639-648 ◽  
Author(s):  
B. Ya. Oskolkov ◽  
M. D. Bondarkov ◽  
S. P. Gaschak ◽  
A. M. Maksymenko ◽  
V. M. Maksymenko ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Environmental Problems ◽  
Chernobyl Nuclear Power Plant ◽  
Cooling Pond ◽  
Power Plant Cooling

scholarly journals Depression with auto-aggressive manifestations in victims during a radiation disaster and fighting

2020 ◽  
pp. 23-29
Author(s):  
N. Оtroshchenko ◽  
P. Оtroshchenko
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Medical Care ◽  
Nuclear Power ◽  
Comparison Group ◽  
Main Group ◽  
Chernobyl Nuclear Power Plant ◽  
Treatment Programs ◽  
Comprehensive Treatment ◽  
Joint Forces

Purpose. To increase the level of medical care for depression patients with autoaggressive manifestations (AM) in victims during a radiation disaster and fighting by developing new diagnostic and treatment programs. Material and methods. The object and methods of the study were 70 liquidators of the accident consequences at the Chernobyl nuclear power plant aged from 54 to 65 years old and 45 combatants of the Anti-terroristic operation (Joint forces operation) aged from 25 to 59 years old – comparison group, depression patients with AM, psychosomatic pathology were examined. For the main group and the comparisons group were used clinical and paraclinical methods, division into groups, according to diagnostic and treatment programs, therapy and follow-up from 2 months to 2 years. Results. The main group observed increasing depressive frequency disorders with AM in liquidators of the accident consequences at the Chernobyl nuclear power plant. The examination revealed asthenic – in 34 (48.6 %) patients, anxiety – in 13 (18.6 %), apathetic – in 8 (11.4 %), hypochondriac – in 7 (10 %), dysphoric – in 5 (7.1 %), obsessive-phobic – in 3 (4.3 %) variants of depression with AM. These particular disorders are characterized asthenic, anxiety and apathetic symptoms, progressive course, personality changes with organic and psychosomatic traits, cognitive deficit (р <0,05). In the comparison group, asthenic was found in 13 (28.3 %) patients, anxious in 11 (23.9 %), hypochondriac in 10 (21.7 %), dysphoric in 6 (13 %), and obsessive-phobic – in 3 (6.5 %) and apathetic variants – in 2 (4.4 %) depression with AM. After the participation in the Anti-terroristic operation (Joint forces operation) fighters exhibit depression with AM in combination with psychosomatic and personality traits, changes in the bioelectrical activity of the brain. These particular disorders are characterized asthenic, anxiety, hypochondriac symptoms, personality and psychosomatic traits (р <0,05). Conclusions. The proposed comprehensive treatment and diagnostic program will increase the level of medical care of the liquidators of the accident consequences at the Chernobyl nuclear power plant, combatants of the Anti-terroristic operation (Joint forces operation) and prevent the occurrence of suicide. Key words: depression, autoaggressive manifestations, diagnostics, treatment, prevention, combatants of the Anti-terroristic operation (Joint forces operation), liquidators of the consequences of the Chernobyl accident.

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