碳硫仪用含碳标准物质标准值的溯源性确认

Traceability Confirmation of Standard Values of Carbon Containing Reference Materials for Carbon Sulfur Instrument

在保证溯源性的前提下,采用十万分之一的天平,直接称量固体基准碳酸钠试剂,相当于0.200%,用于校准碳硫仪,然后测量相当于不同含量的碳酸钠,再测量相关的标准物质,确认出与基准碳酸钠对应的标准物质和有差异的标准物质。圆满地解决了不同的标准物质之间的碳值的差异,提供了一种解决方案,满足标准物质研制以及要求比较严格的碳准确分析的需要。

On the premise of ensuring traceability,the solid reference sodium carbonate reagent is directly weighed with a balance of 1/100 000,equivalent to 0.200%,which is used to calibrate the carbon sulfur instrument,then measure the sodium carbonate equivalent to different contents,and then measure the relevant reference materials to confirm the reference materials corresponding to the reference sodium carbonate and the different reference materials.The difference of carbon value between different reference materials is successfully solved,and a solution is provided to meet the needs of reference material development and carbon accurate analysis with strict requirements.