液体闪烁法测定硅胶相中Pu的α活度
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摘要
采用液体闪烁法测定硅胶相中负载的Pu,研究样品制备条件和测量参数等对分析结果的影响。在闪烁瓶中加入少于1g负载Pu的干硅胶和10mL闪烁液,搅拌5min,用液体闪烁计数器测量300～800道窗口范围内的计数,可得到Pu的α活度。实验研究了HNO_3、Fe、Zr、Nd等杂质对液闪测量的影响,并对液闪测量谱图进行了初步解析。
The liquid scintillation counting analyzer is used to determine theα-activity of Pu adsorbed in silica gel.The influences of preparation conditions and measuring param- eters were studied.In order to determine the a-activity of Pu in silica phase,less than 1 g of silica gel was added into a 20 mL scintillation vial with 10 mL of cocktail.After 5 min of stirring,samples were measured by liquid scintillation analyzer.The activity of Pu in the vial equals to the total counts in energy window of 300-800 channel.The influ- ences of HNO_3,Fe,Zr,Nd on Pu analysis were studied.The formation of spectrogram was also preliminarily analyzed.
The liquid scintillation counting analyzer is used to determine theα-activity of Pu adsorbed in silica gel.The influences of preparation conditions and measuring param- eters were studied.In order to determine the a-activity of Pu in silica phase,less than 1 g of silica gel was added into a 20 mL scintillation vial with 10 mL of cocktail.After 5 min of stirring,samples were measured by liquid scintillation analyzer.The activity of Pu in the vial equals to the total counts in energy window of 300-800 channel.The influ- ences of HNO_3,Fe,Zr,Nd on Pu analysis were studied.The formation of spectrogram was also preliminarily analyzed.
引文
[1]AHRLAND S.The ion exchange properties of silica gel(Ⅰ):The sorption of Na~+,Ca~(2+), UO_2~(2+),Gd~(3+),Zr(Ⅳ)+Nb,U(Ⅳ)and Pu(Ⅳ) [J].Acta Chemi Scand,1960,14:1059-1076.
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[4]宁靖，陈峰．中低放固体放射性废物处置中的α废物在线检测及位置判定方法初探[J]．核电子学与探测技术，2001，21(5)：408-412．NING Jing,CHEN Feng.Methodology study on alpha waste online detection and qualitative eval- uation in solid waste disposal of middle to low level radioactivity[J].Nucl Electron Detect Technol,2001,21(5):408-412(in Chinese).
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[6]董家伦，粱保胜．国内液体闪烁探测技术发展概况[J]．核电子学和探测技术，1983．3(6)：55- 60．DONG Jialun,LIANG Baosheng.Review on do- mestic development of liquid scintillation detec- tive techniques[J].Nucl Electron Detec Technol, 1983,3(6):55-60(in Chinese).
[7]何宪．梁文学，程业浩，等．半导体探测器的测试和应用[J]．原子能科学技术，1966，5：294-300．HE Xian,LIANG Wenxue,CHENG Yehao,et al.Testing and application of semiconductor[J]. Atomic Energy Science and Technology,1966, 5:294-300(in Chinese).
[8]郑勇刚，尹金辉，刘粤霞．Quantulua-1220型低本底液闪仪的性能测定[J]．地震地质，2005，27 (4)：624-632．ZHENG Yonggang,YIN Jinhui,LIU Yuexia. The performance test of Quantulua-1220 liquid scintillation counter[J].Seismology and Geolo- gy,2005,27(4):624-632(in Chinese).
[9]杨大助．萃取-液闪法测定镎、钚、馏的研究及其在高放废液分析中的应用[D]．北京：清华大学核能技术设计研究院，1991．
[2]MILONJIC S K,BOSKOVIC M R.Adsorption of uranium(Ⅵ)and zirconium(Ⅳ)from acid solution on silica gel[J].Sep Sci Technol,1992, 27(12).1643-1653.
[3]张裕卿，王椿树，林灿生，等．高吸附活性硅胶的合成及其对锆的选择分离[J]．核科学与工程，2000,20(4):353-360. ZHANG Yuqing,WANG Rongshu,LIN Can- sheng,et al.Synthesis of silica gels with high adsorption activity and selection separation for zirconium[J].Chin J Nucl Sci Eng,2000,20 (4):353-360(in Chinese).
[4]宁靖，陈峰．中低放固体放射性废物处置中的α废物在线检测及位置判定方法初探[J]．核电子学与探测技术，2001，21(5)：408-412．NING Jing,CHEN Feng.Methodology study on alpha waste online detection and qualitative eval- uation in solid waste disposal of middle to low level radioactivity[J].Nucl Electron Detect Technol,2001,21(5):408-412(in Chinese).
[5]李仲秋，贺瑛．α平面源检定精度的影响因素[J]．计量与测试技术，2004，9，14-16．LI Zhongqiu,HE Ying.Effecting factors onαplane source examining precision[J].Metrology & Measurement Technique,2004,9:14-16(in Chinese).
[6]董家伦，粱保胜．国内液体闪烁探测技术发展概况[J]．核电子学和探测技术，1983．3(6)：55- 60．DONG Jialun,LIANG Baosheng.Review on do- mestic development of liquid scintillation detec- tive techniques[J].Nucl Electron Detec Technol, 1983,3(6):55-60(in Chinese).
[7]何宪．梁文学，程业浩，等．半导体探测器的测试和应用[J]．原子能科学技术，1966，5：294-300．HE Xian,LIANG Wenxue,CHENG Yehao,et al.Testing and application of semiconductor[J]. Atomic Energy Science and Technology,1966, 5:294-300(in Chinese).
[8]郑勇刚，尹金辉，刘粤霞．Quantulua-1220型低本底液闪仪的性能测定[J]．地震地质，2005，27 (4)：624-632．ZHENG Yonggang,YIN Jinhui,LIU Yuexia. The performance test of Quantulua-1220 liquid scintillation counter[J].Seismology and Geolo- gy,2005,27(4):624-632(in Chinese).
[9]杨大助．萃取-液闪法测定镎、钚、馏的研究及其在高放废液分析中的应用[D]．北京：清华大学核能技术设计研究院，1991．
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