Abstract
The aim of the study is to assess the radioactive contamination of medicinal plants of economic types of meadow ecosystems of the Sozh River floodplain. The objects of the study were medicinal plants of the floodplain of the Sozh River. Soil samples and plant samples were taken for radiological analysis within the boundaries of the selected economic types of meadows. Determination of 137 Cs content in soil and plant samples was carried out on the Tennelec. Characteristics of the selected economic types of meadows. 12 species of medicinal plants were analyzed on each type of meadow. In the meadow large-sedimented type, the specific activity of soils in 2015 amounted to 1600 Bq/kg, and in 2020 – 1380 Bq/kg. Radiological analysis of the specific activity of aboveground phytomass in 2015 and 2020 showed that all plant samples did not exceed the republican permissible level of 137 Cs content in medicinal technical raw materials – 370 Bq/kg, with the exception of the pure Stahyis palustris swamp, the permissible level of which was 10 Bq/kg higher. In the turf type of meadows, the specific activity of soils in 2015 was 116 Bq/kg, and in 2020 – 970 Bq/kg. In this type of meadow, all plant samples did not exceed the permissible level of 137 Cs. In the meadow coarse-grained type, the specific activity of soils in 2015 was 1380 Bq/kg, and in 2020 – 1150 Bq/kg. In 2015 and in 2020 all plant samples corresponded to the permissible level of 137 Cs content, only in the meadow foxtail in 2015 the specific activity exceeded the permissible level by 155 Bq/kg. In the fine-grained type of meadows, the specific activity of soils in 2015 was 962 Bq/kg, and in 2020 – 704 Bq/kg. Both in 2015 and in 2020, the specific activity of all plant samples was below the permissible level. A comparative analysis of the specific activity of medicinal plants of the studied economic types of meadows shows that in 2020, compared to 2015, has decreased by an average of 1,3 – 1,4 times, the greatest specific activity of plant samples over the years of observation was observed in the meadow type with large leaves, which is 4 times more than in a fine-grained meadow. The decrease in radioactive contamination of medicinal plants occurred with a simultaneous decrease in the density of radioactive contamination of the soil.
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Claims 17
Claim · model-written summary
In the large-sedimented meadow type, soil specific activity was 1600 Bq/kg in 2015.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the meadow large-sedimented type, the specific activity of soils in 2015 amounted to 1600 Bq/kg, and in 2020 – 1380 Bq/kg”
Claim · model-written summary
In the large-sedimented meadow type, soil specific activity was 1380 Bq/kg in 2020.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the meadow large-sedimented type, the specific activity of soils in 2015 amounted to 1600 Bq/kg, and in 2020 – 1380 Bq/kg”
Claim · model-written summary
In the turf meadow type, soil specific activity was 116 Bq/kg in 2015.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the turf type of meadows, the specific activity of soils in 2015 was 116 Bq/kg, and in 2020 – 970 Bq/kg”
Claim · model-written summary
In the turf meadow type, soil specific activity was 970 Bq/kg in 2020.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the turf type of meadows, the specific activity of soils in 2015 was 116 Bq/kg, and in 2020 – 970 Bq/kg”
Claim · model-written summary
In the coarse-grained meadow type, soil specific activity was 1380 Bq/kg in 2015.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the meadow coarse-grained type, the specific activity of soils in 2015 was 1380 Bq/kg, and in 2020 – 1150 Bq/kg”
Claim · model-written summary
In the coarse-grained meadow type, soil specific activity was 1150 Bq/kg in 2020.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the meadow coarse-grained type, the specific activity of soils in 2015 was 1380 Bq/kg, and in 2020 – 1150 Bq/kg”
Claim · model-written summary
In the fine-grained meadow type, soil specific activity was 962 Bq/kg in 2015.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the fine-grained type of meadows, the specific activity of soils in 2015 was 962 Bq/kg, and in 2020 – 704 Bq/kg”
Claim · model-written summary
In the fine-grained meadow type, soil specific activity was 704 Bq/kg in 2020.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In the fine-grained type of meadows, the specific activity of soils in 2015 was 962 Bq/kg, and in 2020 – 704 Bq/kg”
Claim · model-written summary
Aboveground phytomass of all medicinal plant samples in 2015 and 2020 did not exceed the permissible 137Cs level of 370 Bq/kg.
Verbatim
e0“The objects of the study were medicinal plants”
e1“Radiological analysis of the specific activity of aboveground phytomass in 2015 and 2020 showed that all plant samples did not exceed the republican permissible level of 137 Cs content in medicinal technical raw materials – 370 Bq/kg”
Claim · model-written summary
The pure Stahyis palustris swamp had a permissible level 10 Bq/kg higher than the others.
Verbatim
e0“The objects of the study were medicinal plants”
e1“with the exception of the pure Stahyis palustris swamp, the permissible level of which was 10 Bq/kg higher”
Claim · model-written summary
In the turf meadow type, all medicinal plant samples did not exceed the permissible 137Cs level.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In this type of meadow, all plant samples did not exceed the permissible level of 137 Cs”
e2“In the turf type of meadows, the specific activity of soils in 2015 was 116 Bq/kg, and in 2020 – 970 Bq/kg”
Claim · model-written summary
In the coarse-grained meadow type, medicinal plant samples in 2015 and 2020 corresponded to the permissible 137Cs content level.
Verbatim
e0“The objects of the study were medicinal plants”
e1“In 2015 and in 2020 all plant samples corresponded to the permissible level of 137 Cs content”
e2“In the meadow coarse-grained type, the specific activity of soils in 2015 was 1380 Bq/kg, and in 2020 – 1150 Bq/kg”
Claim · model-written summary
In the meadow foxtail in 2015, the specific activity of medicinal plants exceeded the permissible level by 155 Bq/kg.
Verbatim
e0“The objects of the study were medicinal plants”
e1“only in the meadow foxtail in 2015 the specific activity exceeded the permissible level by 155 Bq/kg”
Claim · model-written summary
In the fine-grained meadow type, the specific activity of all medicinal plant samples in 2015 and 2020 was below the permissible level.
Verbatim
e0“The objects of the study were medicinal plants”
e1“Both in 2015 and in 2020, the specific activity of all plant samples was below the permissible level”
e2“In the fine-grained type of meadows, the specific activity of soils in 2015 was 962 Bq/kg, and in 2020 – 704 Bq/kg”
Claim · model-written summary
Specific activity of medicinal plants decreased by an average of 1.3 to 1.4 times in 2020 compared with 2015.
Verbatim
e0“A comparative analysis of the specific activity of medicinal plants of the studied economic types of meadows shows that in 2020, compared to 2015, has decreased by an average of 1,3 – 1,4 times”
Claim · model-written summary
The highest specific activity of medicinal plant samples was in the meadow type with large leaves, about 4 times that of the fine-grained meadow.
Verbatim
e0“The objects of the study were medicinal plants”
e1“the greatest specific activity of plant samples over the years of observation was observed in the meadow type with large leaves, which is 4 times more than in a fine-grained meadow”
Claim · model-written summary
The decrease in radioactive contamination of medicinal plants occurred together with a decrease in soil contamination density.
Verbatim
e0“The decrease in radioactive contamination of medicinal plants occurred with a simultaneous decrease in the density of radioactive contamination of the soil”