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ce ding shui zhong wei liang you de gao ling min xian se ti xi de yan jiu
Author(s): 
Pages: 138-142
Year: Issue:  2
Journal: Radiation Protection

Keyword:  测定分光光度法;
Abstract: 本文介绍了一种用于测定水中微量铀的高灵敏显色体系。水样中加入菸酸、乙基紫和硫酸后,用混合溶剂环己烷+甲基异丁基甲酮(MIBK)(1:1)萃取,分光光度法测定。该方法的表观摩尔吸光系数为1.62×10-6L·mol-1·cm-1,回收率为97.8—106.0%,探测下限为2×10-9g/mL,避免了使用有害的溶剂苯;Ca2+、W6+、Cu2+和Hg2+等离子对铀的测定干扰较严重。
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