1) the reference materials matrix effect difference
标准物质基体差异性
2) standard differences
标准差异
1.
Recently, the exports of China\'s chemical products have grown rapidly, while they have been hampered severely for standard differences, especially when the REACH regulation has been put into practice by EU in June, 2007.
近年来,我国化工产品出口迅速增长,其因标准差异受阻形势也越来越严峻。
3) the difference of SQGs
基准差异
4) gas reference material
气体标准物质
1.
The preparation method of gas reference material for Kr and CF4 in He is discussed.
论述了氦中氪、四氟化碳气体标准物质的制备方法、稳定性参考值、不确定度计算,证明达到国家二级气体标准物质要求。
2.
The preparation method of gas reference material for H2 and CF4 in Ar is discussed.
论述了氩中氢、甲烷气体标准物质的制备方法、稳定性参考值、不确定度计算,证明达到国家二级气体标准物质要求。
3.
Taking the preparation of secondary gas reference material for CO_(2) in N_(2) as an example,approach preparation of secondary gas reference material is prepared by comparison method,and the analysis and calculation of uncertainty,in which reference material by weighing method.
以氮中二氧化碳二级气体标准物质的研制为例,探讨采用比较法研制二级气体标准物质及其不确定度的分析计算,其中标准物质的制备采用称量法配制,并对所研制的样品进行了均匀性、稳定性试验,结果表明,所研制的氮中二氧化碳气体的标准物质在一年的考察期内,其均匀性、稳定性、量值不确定度均达到国家二级标准物质要求,符合申报条件。
5) calibration gas
气体标准物质
1.
In comparison with gravimetric method,dynamic volumetric method advantage,dynamic volumetric method preparing principle,preparing equipment,preparing process are introducedThe source of the certification uncertainty of dynamic volumetric method preparing calibration gas is analyzed,and the calculation of the related combined standard uncertainty.
介绍了与重量法相比,动态配气法的优点,以及动态法配气的原理、装置和制备过程,分析了动态配气法制备的气体标准物质量值的不确定度的来源及其相对标准合成不确定度的计算。
2.
The calibration gases of alcohol in nitrogen with about 10-6 were prepared in the form of diffusion tubes by dynamic volumetric method, the uncertainties of the calibration gases were in the range of 2%-3%.
用动态配气装置配制体积分数为10~(-6)的氮气中乙醇扩散管气体标准物质,其量值不确定度为2％～3％。
6) gas standard material
气体标准物质
1.
In order to ensure the supply of standard material for chemistry production and apparatus,we did the research of high purity neon gas standard material.
随着我国工业的发展,对氖气产品质量提出了更高要求,为了保证化工生产和仪器仪表服务所需要的标准物质,我们研制了高纯氖气体标准物质。
2.
Prepared the packaged gas standard material by using weighing method,fixed the value of the prepared gas standard material with the weighing result,and analyzed and calculated the indefinite degree of the fixed value.
采用称量法制备了瓶装的气体标准物质 ,用称量结果对所配制的气体标准物质定值 ,并对其定值不确定度进行分析计
补充资料：标准物质
分子式：
CAS号：
性质：又称标准物质(standard substance)。指已准确地确定了其某些化学成分、物理性质和工程参数等的一类物质。用于评价测定方法、校准测量仪器、直接作为比对标准等。它必须具有良好的均匀性、稳定性和制备的再现性。标准物质分为一级和二级两种。经中国计量测试学会标准物质专业委员会技术鉴定、国家计量局批准颁布、并带有证书时标准物质目录。二级标准物质是一般科研单位与生产部门为了满足自身和本行业的需要而研制工工作标准。国际标准化组织(ISO)只命名了一级标准物质为CRM(certified reference material)；美国标准局(NBS)称其为SRMs(standard refer-ence materials)。
CAS号：
性质：又称标准物质(standard substance)。指已准确地确定了其某些化学成分、物理性质和工程参数等的一类物质。用于评价测定方法、校准测量仪器、直接作为比对标准等。它必须具有良好的均匀性、稳定性和制备的再现性。标准物质分为一级和二级两种。经中国计量测试学会标准物质专业委员会技术鉴定、国家计量局批准颁布、并带有证书时标准物质目录。二级标准物质是一般科研单位与生产部门为了满足自身和本行业的需要而研制工工作标准。国际标准化组织(ISO)只命名了一级标准物质为CRM(certified reference material)；美国标准局(NBS)称其为SRMs(standard refer-ence materials)。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条