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本工作采用0.5MNH_4OH+0.7MNH_4ClO_4+0.01M酒石酸钠+0.04％丁二酮肟乙醇溶液为底液,直接测定重水堆内壳活性区沉积物、反应堆主冷却回路中各种清洗液中的微量钴、镍。测定浓度范围:钴5—250ppb;镍:7—380ppb。反应堆内壳沉积物、裂变产物、~3H、清洗液各体系及杂质元素(Si,Al,Ti,Mg,Cu,B等)不影响测定。方法精密度为±7％。经十一种体系的不同放射性强度的样品分析,证明本方法具有灵敏、简便、快速、经济、易防护等优点。
In this work, 0.5MNH_4OH + 0.7MNH_4ClO_4 + 0.01M sodium tartrate + 0.04% dimethylglyoxime ethanol solution was used as the bottom liquid to directly measure the sediments in the active area of the inner shell of the heavy water reactor and trace amounts of cobalt in various cleaning solutions in the main cooling circuit of the reactor ,nickel. Determination of the concentration range: cobalt 5-250ppb; nickel: 7-380ppb. Reactor inner shell deposits, fission products, ~ 3H, cleaning fluid system and impurity elements (Si, Al, Ti, Mg, Cu, B, etc.) did not affect the determination. The precision of the method is ± 7%. The eleven kinds of samples with different radioactive intensity have proved that this method is sensitive, simple, rapid, economical and easy to defend.