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Unsafe levels of radiation found in Chernobyl crops via Live Science

By Harry Baker

The effects of the explosive 1986 disaster can still be seen in nearby crops.

Crops grown near the Chernobyl nuclear site in Ukraine are still contaminated with radiation from the explosive 1986 disaster. 

In a new study, researchers found that wheat, rye, oats and barley grown in this area contained two radioactive isotopes — strontium 90 and cesium 137 — that were above safe consumption limits. Radioactive isotopes are elements that have increased masses and release excess energy as a result.

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Santillo and his colleagues, in collaboration with researchers from the Ukrainian Institute of Agricultural Radiology, analyzed 116 grain samples, collected between 2011 and 2019, from the Ivankiv district of Ukraine — about 31 miles (50 kilometers) south of the nuclear plant. 

This area is outside of Chernobyl’s “exclusion zone,” which is a 30 mile (48 km) radius around the plant that was evacuated in 1986 and has remained unoccupied. They found radioactive isotopes, predominantly strontium 90, were above safe consumption level in 48% of samples. They also found that wood samples collected from the same region between 2015 and 2019, had strontium 90 levels above the safe limit for firewood.

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The researchers believe that the lingering radiation in the wood, in particular, may be the reason for the continued contamination of crops, almost 35 years after the disaster. When analyzing the wood ash from domestic wood-burning ovens, they found strontium 90 levels that were 25 times higher than the safe limit. Locals use this ash, as well as ash from the local thermal power plant (TPP), to fertilize their crops, which continues to cycle the radiation through their soil. 

[…]

The findings were published on Dec. 17 in the journal Environment International.

Read more at Unsafe levels of radiation found in Chernobyl crops

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