电热石墨炉原子吸收法测定岩石矿物中痕量钒

Electrothermal Graphite Furnace AAS Determination of Trace Amounts of Vanadium in Rocks and Minerals

钒广泛存在于自然界中,且分散性很强,它在地壳中的平均含量为1.5×10。钒广泛应用于材料科学和新型材料的研制。在地质化探扫面工作中,要求测定岩石矿物中痕量钒,为此,寻找一种灵敏度高、检出限低、准确、快速简易操作的分析方法是分析化学领域中研究的课题之一。

rapid method for determining trace amounts vanadium by graphite furnace AAS was described.Lanthanum was used as the matrix modifier.Interfering effects of 70 ions were investigated.The absolute sensitivity of vanadium was 13.8 pg and the detection limit was 0.5ppb.The RSD was 1.79%(n=11)for a sample containing 86 ppm V,and 4.91%(n=10)for 24 ppm V,respectively.The method has been successfully applied to the analysis of a number of geochemical SRM’s.