摘要
选择商品化的碳黑作为比表面积标准物质候选材料,利用交叉缩分的方法对碳黑样品进行分装。经均匀性、稳定性(18个月)检验,碳黑标准物质样品具有良好的均匀性和稳定性。按照国际公认的氮气物理吸附BET方法,联合测量能力经确认过的8家实验室对碳黑标准物质样品进行定值(104.6、29.9、8.96 m2/g)。与国内外同类标准物质比较表明:研制的3种碳黑比表面积标准物质的相对不确定度(2.1%、2.3%和3.2%)达到国际同类标准物质的先进水平。
The three commercial carbon blacks were used as the candidates for certified reference materials （CRMs） of specific surface area and subpackaged in the transparent glass bottles sealed with screw cap by means of cross riffling method. The homogeneity and stability tests showed that the carbon black CRMs were homogeneous and stable for at least 18 months, respectively. The BET specific surface areas of 104.6, 29.9, 8.96 m2/g were certified by internationally recognized nitrogen physical adsorption method among eight validated separate laboratories. Compared with the similar CRMs in the world, it was showed that the uncertainties （2.1%, 2.3% and 3.2%） of three carbon black CRMs came up to advanced world level.
出处
《中国粉体技术》
CAS
北大核心
2011年第1期72-75,共4页
China Powder Science and Technology
基金
国家科技基础条件平台建设项目
编号:2005DKA10800
2005DKA10806
关键词
标准物质
比表面积
碳黑
certified reference materials
specific surface area
carbonblack
