地质物料中痕量易挥发的重金属元素和稀散元素的测定在勘查地球化学找矿,地质地球化学研究以及环境科学等方面作为重要指示元素与地球化学特征元素,具有十分重要的意义。由于它们中多数元素在地壳内丰度很低,且ICP对这类元素检测能力又较差,因此,用ICP直接测定是比较困难的。近年,基于载体蒸馏原理的电弧光谱测试技术有了多方进展。本文提出的覆盖蒸馏法是在 The determination of trace amounts of heavy metal elements and rare earth elements in geologic materials is of great significance in the exploration of geochemical prospecting, geo-geochemistry and environmental science as important indicator elements and geochemical characteristics. Due to the low abundance of most of these elements in the Earth’s crust and the poor detection of such elements by ICP, ICP determination is more difficult. In recent years, based on the principle of carrier distillation arc spectrometry testing technology has made many progress. The overburden method proposed in this paper is