A scientist has been collecting and measuring amounts of radioiodine levels in the state since the Japan power plant disaster and says air samples show levels have dwindled.
Dr. Zheng Chang, SC State University’s visiting associate professor of radiochemistry and director of the Applied Radiation Sciences Laboratory, says the radioiodine levels first detected in March have dwindled 100 times.
Dr. Chang first revealed the presence of iodine-131 from Japan’s Fukushima Power Plant accident in samples collected March 18 through 21 in Orangeburg.
According to Chang, the decrease is caused by the natural dispersion of particles in the air and particles that descend to the ground. The professor explained that radioactive iodine naturally decreases by half every eight days. Within three months, the iodine particles will become insignificant.
Chang’s measurements show that, even at its peak, iodine levels were lower than the level of natural radiation. As a result, he said, no health risk was posed to the Orangeburg community.