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在以前的工作中,岩石的Sc、Y和镧系元素是用石墨炉原子吸收法测定的。该方法是用两份草酸钙和一份氢氧化铁共沉淀分离稀土元素后,再用手工注入(石墨炉)样品溶液。由于岩石成因模拟需要对各种超镁铁岩和普通岩石以及造岩矿物中的痕量稀土元素进行测定,因此需要一种更快速、更灵敏的测定方法,特别是对较轻的镧系元素更是如此。在配有自动进样装置的更现代化的石墨炉出现后,我们尝试了使用这套设备和更快速的分离方法
In previous work, rock Sc, Y and lanthanides were determined by graphite furnace atomic absorption spectrometry. The method is to use two calcium oxalate and an iron hydroxide co-precipitation of rare earth elements, and then manually injected (graphite furnace) sample solution. Because rock genetic modeling requires the determination of trace amounts of rare earth elements in various ultramafic and normal rock and rock-forming minerals, a faster and more sensitive assay is needed, especially for lighter lanthanides Even more so. After the advent of a more modern graphite furnace equipped with an autosampler, we tried using the device and a faster separation method