The state-run Korea Atomic Energy Research Institute said Wednesday that it has developed a new technology that analyses radioactive particles in fine dust and uses them to track down the source of the contaminant.

The new technology places a marker to measure the changes in radioactive levels inside fine dust, and analyze the contaminant. Out of some 60 elements that form fine dust, the institute measured five kinds of radioactive isotopes. Among them, the institute discovered beryllium-7 (Be-7), lead-214 (Pb-214), and lead-212 (Pb-212) that can be used as markers.

Radioactive isotopes have an identical number of protons as those in natural elements, but differ in the number of neutrons, resulting in a different mass.

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Source: The Korea Bizwire