重晶石矿石成分分析标准物质研制
Preparation of Certified Reference Barite Ores
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摘要: 研制了7个重晶石矿石成分分析标准物质。其中，GSO-1为铁矿型重晶石，GSO-2、GSO-3为萤石型重晶石，GSO-4、GSO-5为石英型重晶石，GSO-6为硫化物型重晶石，GSO-7为黏土型重晶石。样品采用陶瓷衬里的球磨机加工，加工后样品粒度达到-0.074 mm。采用X射线荧光光谱法检验了钡、铜、铅、锌、锆、铝、硅、铁和钙共9种元素的均匀性，并进行振动试验。8个实验室参加定值工作，提供了硫酸钡、氧化钡、三氧化硫和锶的7个标准值，全三氧化二铁的2个标准值，氟化钙的1个标准值及铜、铅、锌和水溶盐等标准值或参考值。2009年4月，7个样品已被国家质量监督检验检疫总局批准为国家一级标准物质，编号为GBW 07811～GBW 07817。Abstract: Seven certified reference materials of barite ores for chemical component analysis have been developed. GSO1 is ironbarite, GSO2 and GSO3 are fluorite barite, GSO4 and GSO5 are quartz barite, GSO6 is sulfidebarite and GSO7 is claybarite. Processed by ceramiclined ball mill, the sample size is -0.074 mm. The homogeneity test was performed by XRF analysis of Ba, Cu, Pb, Zn, Zr, Al, Si, Fe and Ca. The vibration test was also performed. 8 laboratories participated in the data certification and provided 7 standard values for BaSO4, BaO, SO3and Sr, 2 standard values for TFe2O3, 1 standard value for CaF2, as well as the standard or reference values for Cu, Pb, Zn and watersoluble salt. These seven standard reference barite ores were approved as the national primary reference materials (serial number is GBW 07811～GBW 07817) by General Administration of Quality Supervision, Inspection and Quarantine of China in April 2009.
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Key words:
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- certified
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