论文部分内容阅读
稀土元素是超基性岩石化学变化过程的指示剂,准确知道稀土元素在岩石中的含量,对人们正确了解岩石的起因、形成年代起着重要作用。 我们以混合酸溶解样品,TOA、PHBP萃取和稀酸反萃,使稀土元素与干扰元素Fe、Co、Sc,Cr分离,可测定八个稀土元素,样品含量在1～0.01ppm时,相对标准偏差在±20％以内,回收率在90％以上,并用日本标样——玄武岩进行了核对。
Rare earth elements are indicators of chemical changes in ultrabasic rocks. Accurately knowing the content of rare earth elements in rocks plays an important role in correctly understanding the causes of rocks and forming the age. We used mixed acid to dissolve the sample, TOA, PHBP extraction and dilute acid back extraction, the rare earth elements and interfering elements Fe, Co, Sc, Cr separation, determination of eight rare earth elements, the sample content of 1 ~ 0.01ppm, the relative standard The deviation is within ± 20% and the recovery rate is above 90%, and checked with Japanese standard-basalt.