矿石粉末中痕量铀的现场光度法分析  

Detection of Trace Uranium in Ore Powder Samples by Field Optical Method

作　　者：肖赛金[1] 张兴磊[1] 黄龙珠[1] 杨水平[1] 

机构地区：[1]东华理工大学江西省质谱科学与仪器重点实验室,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2014年第4期438-441,共4页Journal of East China University of Technology(Natural Science)

基　　金：科技部重大仪器专项(2011YQ15004016);江西省科技厅项目(20111BDH80022);江西省质谱科学与仪器重点实验室开放基金(JXMS201113)

摘　　要：随着能源需求的不断增加,隐伏铀矿产资源的勘探和开采越来越受到各国政府的重视。基于铀和偶氮胂Ⅲ之间的显色反应,在自制的固体试剂包和手持式光度计的基础上,建立了矿石粉末中痕量铀的现场光度分析方法。实验结果表明,当铀固体试剂包总质量为1.39 mg时,根据铀与偶氮胂Ⅲ形成的螯合物颜色可建立铀的半定量目视比色分析方法;该方法不仅可区分含铀矿石粉末样品和不含铀的矿石粉末样品,并可准确地测定矿石粉末的铀含量。与常规痕量铀检测方法相比,该方法具有操作简便、分析速度快、适于现场操作等优点,在隐伏矿产资源的勘探与开采、环境和食品中痕量铀监控等领域具有广阔的应用潜力。Uranium ore exploration and mining is attracting more and more attentions by governments because of the urgency to solve energy problems.Based on the chromogenic reaction of uranium and arsenazo Ⅲ,a new field optical method based on homemade solid reagent kit and portable optical spectrometer was developed in this contribution for the detection of trace uranium in ore powder samples.The results showed that a semiquantitative method could be developed by naked eyes based on the color changes of uranium-arsenazo Ⅲcomplexes when the total mass of the homemade solid reagent kit was 1.39 mg.And the developed field optical method could discriminate the ores with uranium and those without uranium successfully.What is more,the field optical method could detect the exact content of uranium in ore powder samples.Compared with the common methods,the present field optical method possesses the advantages of being simple and fast,and is suitable for field work,showing a great promise in uranium ore exploration and mining,trace uranium control in environments and foods.

关 键 词：矿石粉末 现场光度分析法 铀 固体试剂包 

分 类 号：O657.3[理学—分析化学]