碱熔沉淀-等离子体质谱法测定地质样品中的多元素

Multi-element Determination in Geological Samples by Inductively Coupled Plasma Mass Spectrometry after Fusion-precipitation Treatment

摘要: 采用过氧化钠焙融或偏硼酸锂熔融分解样品，将提取液碱性沉淀，通过过滤分离掉大量熔剂，再将沉淀用酸复溶后用等离子体质谱测定26个元素。通过对比，偏硼酸锂熔融—酸提取—碱性沉淀的方案，空白低，易操作，成本低，大多数元素测定结果的相对误差＜10％，相对标准偏差＜5％(n＝10)，与标准值相吻合。

Abstract: A method for multi element determination in geological samples by ICP MS after fusion precipitation treatment was developed. Geological samples were fused with sodium peroxide (Na 2 O 2 )or lithium metaborate (LiBO 2 ) . After dissolutio