含铀微粒分析是核保障领域环境取样分析中的一项重要技术。在涉铀核活动尤其是铀浓缩过程中,会向环境中释放含铀气溶胶,其干燥后形成的含铀微粒与自然界形成的含铀微粒在同位素组成、元素组成、杂质组成等方面均存在明显差异。因此,可...含铀微粒分析是核保障领域环境取样分析中的一项重要技术。在涉铀核活动尤其是铀浓缩过程中,会向环境中释放含铀气溶胶,其干燥后形成的含铀微粒与自然界形成的含铀微粒在同位素组成、元素组成、杂质组成等方面均存在明显差异。因此,可以通过分析所采集样品中微米或亚微米级尺寸含铀微粒的特征信息,为相应核设施、核活动的监测提供判断依据。经过近30年发展,目前已形成了较为成熟的含铀微粒分析方法体系。本文简单介绍了包括样品采集、初步筛选、微粒回收、识别及定位和测量在内的微粒分析流程,对比了各个环节常用技术手段的优缺点。同时,分别讨论了含铀微粒同位素分析、形貌及元素化合物组成分析、年龄分析三个研究方向的研究进展。最后,根据研究现状,结合国际原子能机构(IAEA)核查发展和实施支持计划(Development and Implementation Support Programme for Nuclear Verification),展望了未来含铀微粒分析技术的研究发展方向。展开更多
In this paper, the methods for determination of microamount of boron in U3OS Were described. The sample was dissolved in HNO3 after mannitol was added to complex boron. The boron was separated from U3O8 by distillatio...In this paper, the methods for determination of microamount of boron in U3OS Were described. The sample was dissolved in HNO3 after mannitol was added to complex boron. The boron was separated from U3O8 by distillation as methyl borate.展开更多
The review of ICP-MS is done in this paper, including its origin, and characteristics. Then its application in nuclear industry is described in detail, especially three kinds of isotope elements, lithium, boron and ur...The review of ICP-MS is done in this paper, including its origin, and characteristics. Then its application in nuclear industry is described in detail, especially three kinds of isotope elements, lithium, boron and uranium.展开更多
文摘含铀微粒分析是核保障领域环境取样分析中的一项重要技术。在涉铀核活动尤其是铀浓缩过程中,会向环境中释放含铀气溶胶,其干燥后形成的含铀微粒与自然界形成的含铀微粒在同位素组成、元素组成、杂质组成等方面均存在明显差异。因此,可以通过分析所采集样品中微米或亚微米级尺寸含铀微粒的特征信息,为相应核设施、核活动的监测提供判断依据。经过近30年发展,目前已形成了较为成熟的含铀微粒分析方法体系。本文简单介绍了包括样品采集、初步筛选、微粒回收、识别及定位和测量在内的微粒分析流程,对比了各个环节常用技术手段的优缺点。同时,分别讨论了含铀微粒同位素分析、形貌及元素化合物组成分析、年龄分析三个研究方向的研究进展。最后,根据研究现状,结合国际原子能机构(IAEA)核查发展和实施支持计划(Development and Implementation Support Programme for Nuclear Verification),展望了未来含铀微粒分析技术的研究发展方向。
文摘In this paper, the methods for determination of microamount of boron in U3OS Were described. The sample was dissolved in HNO3 after mannitol was added to complex boron. The boron was separated from U3O8 by distillation as methyl borate.
文摘The review of ICP-MS is done in this paper, including its origin, and characteristics. Then its application in nuclear industry is described in detail, especially three kinds of isotope elements, lithium, boron and uranium.
