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首页> 外文期刊>Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry >A rapid determination of Ra-226 in water using composite ion exchanger MnO2-PAN
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A rapid determination of Ra-226 in water using composite ion exchanger MnO2-PAN

机译：复合离子交换剂MnO2-PAN快速测定水中的Ra-226

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摘要

A rapid method for Ra-226 determination in water samples up to 10 L using MnO2-PAN (polyacrylonitrile) composite ion absorber was proposed and verified. Samples were traced with Ba-133 to monitor radium radiochemical recoveries which were in the range of (92-100) %. MnO2-PAN absorber with grain size < 0.1 mm with bed volume (BV) 2 mL was used for Ra-226 preconcentration from water samples (pH 6.5-7.0) at flow rate < 290 BV h(-1). Radium was eluted from the absorber with 20 mL of 6.5 M HCl at flow rate of 1.5 mL min(-1). Alpha-spectrometric counting of Ba(Ra)SO4 microprecipitate was used for Ra-226 determination. The developed method was used for the Ra-226 determination in 15 samples of natural mineral, mountain spring, drinking and natural healing waters from Slovakia, Slovenia and Czech Republic.
机译：提出并验证了使用MnO2-PAN（聚丙烯腈）复合离子吸收剂快速测定10 L水中的Ra-226的方法。用Ba-133追踪样品，以监测镭的放射化学回收率，回收率在（92-100）％范围内。 MnO2-PAN吸收剂的粒径小于0.1 mm，床体积（BV）2 mL，用于从水样品（pH 6.5-7.0）中以流速<290 BV h（-1）进行Ra-226预浓缩。用20 mL 6.5 M HCl以1.5 mL min（-1）的流速从吸收器中洗脱出镭。 Ba（Ra）SO4微沉淀物的Alpha光谱法计数用于Ra-226测定。所开发的方法用于从斯洛伐克，斯洛文尼亚和捷克共和国的15种天然矿物质，山泉水，饮用水和天然愈合水中进行Ra-226测定。

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