radiochemical research of the main food products and environmental objects in khmelnytskyi region
TRANSCRIPT
Radiochemical research of the main food products
and environmental objects in Khmelnytskyi region
Veronika Troyan,
Student of form 9 B
Scientific instructor:
Natalia Sadovnyk,
Teacher of Chemistry
Khmelnytskyi specialized secondary school № 6
• AIM: to carry out radiochemical research on the
content of strontium-90 and caesium-137 in the
main food products and environmental objects in
Khmelnytskyi region.
• TASKS: to analyze the territory, to investigate the
content of radionuclides strontium-90 and
caesium-137 in the main food products and
environmental objects in Khmelnytskyi region.
• THE TOPICALITY of our research is the prevention of
induced radionuclide accumulation in food products and
environment.
• THE SUBJECT: the definition of radionuclides
strontium-90 and caesium-137 concentration.
• THE OBJECT: the environment, food products in
Khmelnytskyi region.
• THE PRACTICAL VALUE: we investigated the
content of radionuclides and did not discover the excess
of radionuclides concentration in the objects.
The execution of research in radiological department of regional
sanitary ecological station (SES)
Application of fume box
Soil filtration
extraction of cabbage juice
The usage of sodium iodide in
laboratory research
The execution of research in radiological department of regional
sanitary ecological station (SES)
Weighing of ash samples
production of concentrate
The execution of research in radiological department of regional
sanitary ecological station (SES)
Radionuclide is an unstable form of a chemical
element that radioactively decays and can transform.
Natural origin
• potassium-40
• uranium-235
• thorium
Artificial origin
over 2000
The sources of radiation
X-Rays
The results of nuclear
explosions in the
atmosphere
• Watches with gleaming face
The sources of radiation
Compasses
Telephone and computer
keyboard
Nuclear power stations
• radiation sickness
• Chronic abuse of certain functions (leukopenia,
etc .)
• Acute effects of local irradiation large dose
• Long-term effects of radiation
Pathological effects of radiation
0
2
4
6
8
10
12
14
16
18
milk meat vegetables grain products
The share of radiochemical studies of food products
0%
20%
40%
60%
80%
100%
Pasture soil
Arable soil
The content of radionuclides (caesium-137) in pasture and arable soil in 2013
00.5
11.5
22.5
33.5
44.5
pasture soil
arable soil
The content of radionuclides (strontium-90) in pasture and arable soil in 2013
0
2
4
6
8
10
12
pasture soil
arable soil
The content of radionuclides (caesium-137) in pasture and arable soil in 2014
0
1
2
3
4
5
6
7
pasture soil
arable soil
The content of radionuclides (strontium-90) in pasture and arable soil in 2014
The name of the product
Concentration, bk/kg (l)
caesium-137 strontium-90
2013 2014 2013 2014
milk 0,148 0,129 0,087 0,054
pork 0,155 0,128 0,157 0,098
Bеef 0,158 0,150 0,121 0,210
Rye bread 0,122 0,200 0,226 0,154
Wheat bread 0,092 0,130 0,100 0,128
Potato 0,115 0,070 0,163 0,154
Оther vegetables 0,100 0,095 0,184 0,166
Average concentration of strontium-90 and caesium-137 in food products
Locality
Content, *10-3 Кі/km2
caesium-137 strontium-90
2013 2014 2013 2014
Khmelnytskyi 0,023 0,013 0,012 0,009
Shepetivka 0,015 0,022 0,011 0,024
Netishyn 0,024 0,023 0,017 0,022
Slavuta 0,088 0,006 0,067 0,022
The average activity of samples of precipitation in Khmelnytskyi region
Conclusions
•We investigated the content of radionuclides and did not discover the
excess of radionuclides concentration in the objects.
•Almost all environmental objects in Khmelnytskyi region and main
food products were investigated.
•Significant radiation changes and exceeding permissible levels of
radionuclides in controlled objects for the period 2013-2014 years
were not found.