CAJ | 학술논문

目的研究现场采集的不同粒径铀氧化物在人体模拟肺液和相关的缓冲体系中的溶解特性。方法用Cascade采样器将氧化铀按粒径分级，观察不同粒径铀氧化物在模拟肺液和缓冲液中不同时间的累积溶解百分数。结果小粒径铀氧化物在模拟肺液中的溶解度相对较高，且溶解速率随时间增加而增大。铀氧化物在HAc-NaAc体系中的溶解速率随酸度增加而加快，在碱性NH4OH-NH4Cl体系中溶解速率随碱性增加而加快。铀氧化物在Na2CO3溶液中易溶，在NaH2PO4-Na2HPO4体系中几乎不溶。结论小粒径铀氧化物在模拟肺液中溶解度较高。铀氧化物易溶于酸性HAc-NaAc体系、碱性NH4OH-NH4Cl体系和Na2CO3溶液，不溶于NaH2PO4-Na2HPO4体系。
목적연구현장채집적불동립경유양화물재인체모의폐액화상관적완충체계중적용해특성。방법용Cascade채양기장양화유안립경분급，관찰불동립경유양화물재모의폐액화완충액중불동시간적루적용해백분수。결과소립경유양화물재모의폐액중적용해도상대교고，차용해속솔수시간증가이증대。유양화물재HAc-NaAc체계중적용해속솔수산도증가이가쾌，재감성NH4OH-NH4Cl체계중용해속솔수감성증가이가쾌。유양화물재Na2CO3용액중역용，재NaH2PO4-Na2HPO4체계중궤호불용。결론소립경유양화물재모의폐액중용해도교고。유양화물역용우산성HAc-NaAc체계、감성NH4OH-NH4Cl체계화Na2CO3용액，불용우NaH2PO4-Na2HPO4체계。
Objective To investigate the solubility characteristics of uranium oxid ewith different particle sizes,which was collected at site scene,in simulated lung fluid and other correlative buffer systems.Methods Uranium oxide particles were classified with a cascade impector.The percentage of cumulative soluble uranium with different particle sizes in simulated lung fluid and buffer solutions at different times were observed.Results Uranium oxides with smaller particle sizes had better solubility in simulated lung fluid and the solubility became higher with increase of time.The solubility of uranium oxide also became faster along with the increase of acidity of HAc-NaAc buffer and increase of alkalinity of NH4OH-NH4Cl buffer systems.Uranium oxide was soluble in Na2CO3 solution and basically insoluble in NaH2PO4-Na2HPO4 solution.Conclusions Uranium oxides with smaller particle sizes have better solubility than bigger ones in simulated lung fluid.Uranium oxide is soluble in acidic HAc-NaAc,alkaline NH4OH-NH4Cl buffer systems and Na2CO3 solution,but insoluble in NaH2PO4-Na2HPO4 solution.