CAJ | 학술논문

综述了美国 NIST元素汞发生器的基准溯源传递方法，通过在输出的汞标准气体中混合加入已知高纯度的201 Hg0气体（201 Hg2＋标准溶液还原雾化），并采用同位素稀释电感耦合等离子体/质谱法（ID ICP/MS）测量加标后201 Hg/202 Hg同位素丰度比例，计算出待溯源元素汞发生器输出的 Hg0质量浓度。该过程实现了从元素汞一级标准物质 SRM 3133到201 Hg2＋标准溶液，再到元素汞发生器输出标准气体的溯源传递，完成了从 NIST元素汞基准到仪器供应商生产基准的一级溯源传递，为建立符合我国需求的元素汞溯源传递方法和形成元素汞发生器溯源传递能力提供借鉴。
종술료미국 NIST원소홍발생기적기준소원전체방법，통과재수출적홍표준기체중혼합가입이지고순도적201 Hg0기체（201 Hg2＋표준용액환원무화），병채용동위소희석전감우합등리자체/질보법（ID ICP/MS）측량가표후201 Hg/202 Hg동위소봉도비례，계산출대소원원소홍발생기수출적 Hg0질량농도。해과정실현료종원소홍일급표준물질 SRM 3133도201 Hg2＋표준용액，재도원소홍발생기수출표준기체적소원전체，완성료종 NIST원소홍기준도의기공응상생산기준적일급소원전체，위건립부합아국수구적원소홍소원전체방법화형성원소홍발생기소원전체능력제공차감。
Overviewing the method of prime traceability and delivery on element mercury generator from the NIST in USA.USA NIST uses ID ICP/MS method to calculate the candidate mercury generator output concentra-tion,it adds known high pure 201 Hg0 gas to candidate element mercury generator output calibration gas,then abun-dance of the spiked isotope 201 Hg will be changed,the abundance ratio of 201 Hg/202 Hg will be measured by ICP/MS.This process completes mercury traceability which is from the prime SRM3133 to 201Hg2 +solution concen-tration,and from 201 Hg2 + solution concentration to element mercury generator.This method is for the vender prime to trace to NIST prime,it is good for us to establish the element mercury generator traceability method and capacity which is suitable for Chinese requirement.