| 卤化银添加剂对125I在北山花岗岩岩粉中的吸附作用研究 | |
| Influence of Silver Halide Additives on the Sorption of Iodine-125 on Beishan Granite Powder | |
| 摘要: 利用柱法实验和批次实验研究了卤化银(AgCl、AgBr、AgI)对125I在甘肃北山花岗岩中的吸附现象。结果表明在无载体的情况下，卤化银添加剂有利于125I在北山花岗岩岩粉中的吸附，有效分配系数(Kd,e)均大于1.0×103 mL·g-1。在有载体的情况下，氯化银和溴化银仍然对125I在北山花岗岩岩粉中有良好的吸附作用，Kd,e大于1.0×103 mL·g-1。其中，溴化银的吸附效果最好，这可能与其晶体结构和光解性质有关。 | |
| 关键词: 卤化银 添加剂 北山花岗岩 125I 高放废物地质处置 | |
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| Abstract: The influence of silver halide additives (AgCl, AgBr, AgI) on the sorption of 125I on Beishan Granite powder was studied by column and batch sorption methods. The results indicate that silver halide additives could enhance the sorption of 125I on Beishan Granite powder with effective distribution coefficients (Kd,e) greater than 1.0×103 mL·g-1. When isotopic carrier of 125I is added, silver chloride and silver bromide still enhance the sorption of 125I on Beishan Granite Powder with Kd,e values greater than 1.0×103 mL·g-1. Among the three, silver bromide has the highest power in enhancing the sorption of 125I on the granite powder, which may due to its crystal structure and photolysis ability. | |
| Keywords: silver halides additives Beishan Granite 125I high-level radioactive wastes | |
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| 陈 涛,田文宇,孙 茂,黎 春,刘晓宇,王路化,王祥云,刘春立.卤化银添加剂对125I在北山花岗岩岩粉中的吸附作用研究[J].无机化学学报,2009,25(5):761-766. | |
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