title: [Radiolysis of aqueous solution of thiocyanate by gamma-rays].
abstract: Radiolysis of aqueous solution of thiocyanate by 60Co gamma-rays was studied. In condition of pH = 1 and pH = 3,25 mg/L SCN- was decomposed under the dose of 6 kGy, with decomposition rate of 98.11% (pH = 1) and 95.97% (pH = 3) respectively. 25 mg/L SCN- (pH = 7) was decomposed under the dose of 9 kGy and the decomposition rate is 99.33%. In the alkaline condition, pH = 10 and pH = 12, the dose of 18 kGy was need, and the decomposition rate is 99.64% and 99.93% respectively. High SCN- concentration means that more radiation dose is need. From the comparison of before radiolysis and after radiolysis's TOC (total organic carbon) and TN (total nitrogen) of SCN- solution, little TOC and TN was removed. The determination of SO4(2-) and NO3- concentration indicated that sulfur element was removed and converted to SO4(2-), and nitrogen element rarely converted to NO3-, but converted to other forms of nitrogen.
authors.affiliation: Department of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China. haida8080@163.com
authors.forename: Hai-bing
authors.initials: HB
authors.lastname: Feng
authors.forename: Ming-de
authors.initials: MD
authors.lastname: Yang
authors.forename: Hu-sheng
authors.initials: HS
authors.lastname: Hu
authors.forename: Hui-ping
authors.initials: HP
authors.lastname: Huang