CAJ | 학술논문

后处理厂运行过程中的痕量铀样品分析受到 H +和 NO-3干扰,严重影响其分析速度与准确度。本工作针对时间分辨荧光法分析痕量铀样品的主要干扰 H +和 NO-3,使用离子交换纤维建立了纤维浸泡式样品预处理方法。该方法有效消除 H +和 NO-3对铀酰荧光分析的干扰,处理后的样品可以使用工作曲线法测量,操作简便、准确度高,适合于手套箱中使用,满足了后处理厂痕量铀样品预处理方法急需改进的需求。经模拟样品分析6次测量精密度优于5%,测量结果经 t 检验(α=0.02)证明结果准确可靠。
후처리엄운행과정중적흔량유양품분석수도 H +화 NO-3간우,엄중영향기분석속도여준학도。본공작침대시간분변형광법분석흔량유양품적주요간우 H +화 NO-3,사용리자교환섬유건립료섬유침포식양품예처리방법。해방법유효소제 H +화 NO-3대유선형광분석적간우,처리후적양품가이사용공작곡선법측량,조작간편、준학도고,괄합우수투상중사용,만족료후처리엄흔량유양품예처리방법급수개진적수구。경모의양품분석6차측량정밀도우우5%,측량결과경 t 검험(α=0.02)증명결과준학가고。
Some technological operational states are monitored through the analysis of trace uranium in nuclear fuel reprocessing pilot plant,so the analysis of trace uranium plays important role in the pilot plant.Time-resolved fluorescent (TRF)method is used to analyze trace uranium in the analytical laboratory of pilot plant,but the accuracy of measuring results is not very good because of the existence of some interfering ions.For accurate deter-mination of UO2 +2 ,a rapid and simple sample pretreatment method that can eliminate the influences is established,which can meet the demand of the trace uranium analysis in nuclear fuel reprocessing pilot plant.In this method,a new type of ion exchange materials—ion exchange fiber (IEF)has been used to remove the interfering ions.The sr is 5% (n=6)in this work.The determination results are accurate and reliable by t test (α=0.02).