In this article, the block scheme and metrological characteristics of the State primary standard of the mass (molar) fraction and mass (molar) concentration of the component in the liquid and solid substances and mate...In this article, the block scheme and metrological characteristics of the State primary standard of the mass (molar) fraction and mass (molar) concentration of the component in the liquid and solid substances and materials based on coulometric titration GET 176-2010 are given. Primary reference materials certified by coulometric titration in the Ural Scientific and Research Institute for Metrology include eight certified reference materials (CRMs) of pure solid substances (mostly salts of sodium or potassium) and one hydrochloric acid solution CRM. The metrological characteristics of these reference materials and the scheme of their application in titrimetric analysis are shown. The expanded uncertainty of the certified value (mass fraction for the solid substances or molar concentration for the solution) is in the range from 0.018% to 0.05%. Information about two primary reference materials of high purity iron and lead nitrate certified by controlled-potential coulometry with expanded uncertainty from 0.04% to 0.07% is also given.展开更多
将我国生态纺织品技术标准GB/T 18885—2009《生态纺织品技术要求》与2010版Oeko-Tex Standard 100标准进行了对比,分析二两者测试项目的差异,主要包括消解样品中的重金属、全氟辛烷磺酸和全氟辛酸、邻苯二甲酸酯类、有机锡化合物、多...将我国生态纺织品技术标准GB/T 18885—2009《生态纺织品技术要求》与2010版Oeko-Tex Standard 100标准进行了对比,分析二两者测试项目的差异,主要包括消解样品中的重金属、全氟辛烷磺酸和全氟辛酸、邻苯二甲酸酯类、有机锡化合物、多环芳烃、阻燃剂等有害物质的测试项目。对比结果表明,我国的生态纺织品有害物质检测项目与国际标准还存在较大差异,关于纺织品中有害物质的限量研究已明显落后于国外标准,因此应加大生态纺织品中有害物质的检测技术研究力度,加快生态纺织品标准的制修订工作。展开更多
对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析...对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析、总结。分别对新增限量物质和受监控物质的基本信息、限量要求、监控原因、化学危险性及主要用途进行说明。对新标准的变更内容进行补充说明,方便使用者更深入理解标准内容。展开更多
文摘In this article, the block scheme and metrological characteristics of the State primary standard of the mass (molar) fraction and mass (molar) concentration of the component in the liquid and solid substances and materials based on coulometric titration GET 176-2010 are given. Primary reference materials certified by coulometric titration in the Ural Scientific and Research Institute for Metrology include eight certified reference materials (CRMs) of pure solid substances (mostly salts of sodium or potassium) and one hydrochloric acid solution CRM. The metrological characteristics of these reference materials and the scheme of their application in titrimetric analysis are shown. The expanded uncertainty of the certified value (mass fraction for the solid substances or molar concentration for the solution) is in the range from 0.018% to 0.05%. Information about two primary reference materials of high purity iron and lead nitrate certified by controlled-potential coulometry with expanded uncertainty from 0.04% to 0.07% is also given.
文摘将我国生态纺织品技术标准GB/T 18885—2009《生态纺织品技术要求》与2010版Oeko-Tex Standard 100标准进行了对比,分析二两者测试项目的差异,主要包括消解样品中的重金属、全氟辛烷磺酸和全氟辛酸、邻苯二甲酸酯类、有机锡化合物、多环芳烃、阻燃剂等有害物质的测试项目。对比结果表明,我国的生态纺织品有害物质检测项目与国际标准还存在较大差异,关于纺织品中有害物质的限量研究已明显落后于国外标准,因此应加大生态纺织品中有害物质的检测技术研究力度,加快生态纺织品标准的制修订工作。
文摘对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析、总结。分别对新增限量物质和受监控物质的基本信息、限量要求、监控原因、化学危险性及主要用途进行说明。对新标准的变更内容进行补充说明,方便使用者更深入理解标准内容。