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《化学分析计量》 2018年第02期
DOI:10.3969/j.issn.1008-6145.2018.02.011
惰气熔融-红外吸收法测定铀金属中的氢
王涛,黄少荣,代亚会,张庆桂,梅家文
中国核工业集团公司四○四有限公司第四分公司,兰州 732850 
Determination of hydrogen content in uranium metal by inert gas fusion-infrared absorption method
WANG Tao,HUANG Shaorong,DAI Yahui,ZHANG Qinggui,MEI Jiawen
The Fourth Filial Company of 404 Company Limited, China Nationl Nuclear Corporation, Lanzhou 732850, China 
摘要:建立惰气熔融-红外吸收法测定铀金属中氢含量的方法。将铀金属加工为柱状样品,用25%硝酸、去离子水、丙酮清洗并用冷风吹干后测定。对实验条件进行了优化,坩埚脱气功率为3500 W,脱气时间不低于70 s,脱气次数不低于5次,分析功率为3000 W,分析时间为60 s。该方法的检出限为0.02 μg/g,氢含量为1.05 μg/g的铀金属样品测定结果的相对标准偏差为17.9%(n=6),加标回收率为72.5%~127.3%。该方法灵敏、准确,适用于铀金属中微量氢含量的测定。 
Abstract:A method for determining hydrogen content in uranium metal by inert gas fusion-infrared absorption method was established. The uranium metal was processed into columnar sample and cleaned by 25% nitric acid, deionized water and acetone, and dried in cold wind. The experimental conditions were optimized, the degassing power was 3500 W, degassing time was not less than 70 s, degassing number was not less than 5, analysis power was 3000 W and the analysis time was 60 s. The detection limit of the method was 0.02 μg/g. For uranium metal sample which hydrogen content was 1.05 μg/g, the relative standard deviation of detetion results was 17.9%(n=6), the added recovery was 72.5%-127.3%. This method is sensitivity and accurate, it can be used to determine trace hydrogen content in uranium metal. 
关键词:惰气熔融;铀金属;红外吸收法;氢含量 
Keywords:molten with inert gas; uranium metal; infrared absorption method; hydrogen content 
本文引用格式:
王涛,黄少荣,代亚会,等. 惰气熔融-红外吸收法测定铀金属中的氢[J].化学分析计量,2018,27(2):44-48.
WANG T,HUANG S R,DAI Y H,et al. Determination of hydrogen content in uranium metal by inert gas fusion-infrared absorption method[J]. Chemical analysis and meterage,2018,27(2):44-48. 

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