Effects of γ ray irradiation on Vibrio Qinghaiensis sp. Q67

1st International Global on Renewable Energy and Development

Wei, Yan^1 ; Linping, Kuai^1

Shanghai Jiao Tong University, Shanghai

200240, China^1

关键词: Dose rate;    Gamma ray sources;    Gamma-ray irradiation;    Hormesis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012092/pdf
DOI  :  10.1088/1755-1315/100/1/012092

来源: IOP

【 摘 要 】

In order to investigate the luminous responses of γ ray irradiation on Vibrio Qinghaiensis sp. Q67, two γ ray sources,60Co and137Cs, were used. Following the dose rates between 0.05Gy/min and 0.2Gy/min of60Co, the relative luminous value (RLV) of Q67 was less than 1 after 5 minutes irradiation and inversely related to dose rate. Irradiated 1 hour at dose rates range from 100nGy/h to 10mGy/h of137Cs, two successive stages in the luminous response were found: hormesis and inhibition. It was found that RLVwas interleaved and could not be distinguished until inhibition stage appearance. The time when RLVdrops to less than 1 (T0) was linear with the logarithm of dose rate. Experimental result indicates that Q67 is sensitive to acute γray radiation, which could be used to monitor γray radiation.