CAJ | 학술논문

目的提高放射卫生技术服务机构检测人员的技术水平和分析能力,进一步促进全国γ能谱实验室放射性核素检测技术的发展.方法组织2014年度全国放射性核素γ能谱分析方法比对,比对基质为土壤样品,要求参加比对的单位分析测量样品中放射性核素40K、137Cs、208Tl和228Ac的比活度.结果提交结果报告的31家比对单位中,比对结果合格的有26家,不合格的有5家,有2家单位的比对结果获得优秀.所有参加比对的单位的整体合格率为84％(26/31),优秀率为6％(2/31).结论参加比对的多数单位具备较高的检测能力和水平,其出具的检测结果准确可靠.在日常工作中需加强对γ谱仪的维护保养,重视实验室间定期刻度,并注意采用正确的核衰变参数进行计算.
목적 제고방사위생기술복무궤구검측인원적기술수평화분석능력,진일보촉진전국γ능보실험실방사성핵소검측기술적발전.방법 조직2014년도전국방사성핵소γ능보분석방법비대,비대기질위토양양품,요구삼가비대적단위분석측량양품중방사성핵소40K、137Cs、208Tl화228Ac적비활도.결과 제교결과보고적31가비대단위중,비대결과합격적유26가,불합격적유5가,유2가단위적비대결과획득우수.소유삼가비대적단위적정체합격솔위84％(26/31),우수솔위6％(2/31).결론 삼가비대적다수단위구비교고적검측능력화수평,기출구적검측결과준학가고.재일상공작중수가강대γ보의적유호보양,중시실험실간정기각도,병주의채용정학적핵쇠변삼수진행계산.
Objective To improve the technical levels and analytical ability of γ-spectrometry analysts for agencies engaged in radiation measurement and assessment and to promote further advances of monitoring methods for γ-spectrometry analysis laboratories in our nation.Methods A nationwide intercomparison on γ-spectrometry measurement for activity concentration of 40K, 137Cs, 208Tl, and 208Ac in soil was organized in 2014.Results Thirty-one laboratories have participated in this intercomparison.Among these laboratories, 26 laboratories showed "acceptable" results, which include 2 laboratories with "excellent" status, while 5 laboratories showed "unacceptable" results.The production percentages of "acceptable" results and "excellent" status are 84％ (24/31) and 6％ (2/31), respectively.Conclusions The measurement values reported by most of the laboratories involved in this intercomparison showed a good agreement with the reference values.Therefore, these values may provide a reliable measurement result during measurement in γ-spectrometry analyses.However, proper operation of γ-spectrometers and its regular calibration must be further emphasized to obtain accurate measurements to improve the calculation of nuclear data in some laboratories.