@misc{oai:repo.qst.go.jp:00069292,
 author = {Ishii, Nobuyoshi and Takeda, Hiroshi and Uchida, Shigeo and 石井 伸昌 and 武田 洋 and 内田 滋夫},
 month = {Feb},
 note = {For appropriate safety assessment of the disposal of TRU waste, distribution coefficients (Kd) and gasification ratios of 14C labeled [1, 2-14C] sodium acetate (14C-NaOAc) were determed by batch sorption tests for 85 Japanese paddy soil samples.  The soil studied were from four soil types: Andsol; Gley; Gray lowland; and Yellow.  The range of Kd values for all soil samples was from 7.5 to 295.2 mL g -1, and the mean value was 105.6 mL g -1.  This mean value was higher than that of previous study (1).  The high Kd values of the present study could be a result of the properties of the paddy soils.  The comparison of Kd values by each soil type revealed statistically significant difference between Andsol and Gray lowland soils (P < 0.05).  The soil type was one of the factors affecting partitioning of 14C-NaOAc.  Gasification ratios ranged from 29.1% to 83.3%, and its mean value was 66.4% of the total 14C-NaOAc added.  These results suggest that most of the radiocarbon in 14C-NaOAc will be released from soil into the air as gases.  The gasification ratio between soil types was also compared, but no statistically significant differerence was found.  Gas production may be controlled by other than physicochemical properties of soil, for expample by factors such as bacterial community.  In addition, both the Kd values and the gasification ratios for Gley soil were decreased according to the increase in pH although the underlaying mechanisms for this observation are not clear., Waste Management Symposium 2008},
 title = {The Distribution Coefficients and Gasification Ratios of [1,2-14C] Sodium Acetate for Various Paddy Soils in Japan},
 year = {2008}
}