การตรวจวัดธาตุเรเดียม 226 ในแม่น้าพอง เขตจังหวัดขอนแก่น โดยใช้แมงกานีสไฟเบอร์ และเทคนิคแกมมาสเปคโตรเมตรี
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Abstract
Determination of Radium–226 in Nam Pong River at Khonkaen Province via Manganese Fibers using Gamma-spectrometry
Vitsanusat Atyotha1*
Determination of Ra-226 concentration in 320 water samples in Nam Pong River at Khonkaen Province were determined via manganese fibers which absorbed Ra-226 during water flowing at the rate of 1000 ml/min by using Gamma-spectrometric method. The measured average concentrations of radium-226 in the range 0 - 77.27 mBq/l. Compared to the standard of United State Environmental Protection Agency (EPA) requires that the concentration of radium-226. The water consumption should not exceed 185 mBq/l.[1] From measurements of radium 226 in all water samples there have lower than the standard amount, but there are two areas where the concentration higher than other regions. Include water sample from Ban Huay Bong Tampon Thung Champoo Amphur Phu Wiang have average concentration of Ra-226 to 77.27 mBq/l. and water sample from Ban Huay Sai Tampon Ban Dong Amphur Ubonrat have average concentration of Ra-226 to 75.36 mBq/l. Therefore, it is necessary to monitor the concentration of Ra-226 in the following two area.