5种钼矿石和钼精矿成分分析标准物质的研制

Development of five certified reference materials of molybdenum ore and molybdenum concentrate for chemical analysis

研制了钼矿石和钼精矿成分分析标准物质。从国内有代表性的矿区取点,采用了多级破碎、三维机械混筛工艺,确保了该标准物质化学成分的均匀性,多家权威实验室用准确可靠的分析方法确定了26个元素成分的标准值和不确定度,经考察,该项目标准物质的均匀性与稳定性良好。该项目钼矿石和钼精矿对F、C、Re定值,弥补了目前国内钼矿石和钼精矿标准物质定值成分的不足。已被国家市场监督管理总局批准为国家级标准物质。

The certified reference materials of molybdenum ore and molybdenum concentrate for chemical analysis were developed.Samples were selected from different representative mining area at home.Using the multi-stage crushing and three-dimensional mechanical mixing process,ensure the homogeneity of CRMs.The values and standard uncertainty of twenty-six in CRMs have been determined by several authority lab using accurate analysis methods.After investigation,the homogeneity and stability of the CRMs are good.The standard value of fluorine,carbon and rhenium of molybdenum ore and molybdenum concentrate in the CRMs makes up for the deficiency of the current domestic certified materials of molybdenum ore and molybdenum concentrate.The CRMs have been approved by State Administration for Market Regulation of P.R.China as national CRMs.