青藏地区四个盐湖表层沉积物标准物质研制

Preparation of four salt lake surface sediment reference materials in Qinghai-Tibet area

采集制备青藏地区4个不同类型盐湖表层沉积物标准物质,盐湖卤水化学类型包括硫酸钠亚型、硫酸镁亚型、碳酸盐型以及氯化物型。采用精度相对较高的XRF法进行均匀性检验,统计结果表明样品均匀性良好。通过4个年度5次稳定性考查,结果表明样品具备良好的稳定性。国内11家不同实验室参与定值分析,定值成分38种,提供141个标准值、11个参考值。

Collecting and preparing the Qinghai-Tibet region of 4 different types of sediments of saline lake,standard substance,saline lake water chemistry types including subtype sulfate,magnesium sulfate subtype,carbonate and chloride.The uniformity test was conducted with a relatively extreme accuracy method of the XRF.The statistical results demonstrate that the samples have excellent uniformity.Through 4-year 5-stability test,the statistical results show that the samples have excellent stability.11 different systems laboratories have participated in the definite value analysis,and 38 components,141 standard values and 11 reference values were determined.