Balaram V, Ramesh S L, Anjaiah K V
National Geophysical Research Institute, 500 007, Hyderabad, India.
Anal Bioanal Chem. 1995 Sep;353(2):176-82. doi: 10.1007/s0021653530176.
ICP-MS has been used for the determination of over 30 geochemically significant trace elements (Sc, V, Cr, Co, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Nb, Cs, Ba, Hf, Ta, Pb, Th, U and REEs) in anorthosites and related rock reference samples. Open acid digestion, pressure decomposition using HF, HNO(3) and HClO(4), and a fusion method using lithium metaborate and subsequent dissolution in dil. HNO(3) were adopted for the decomposition of these rock samples before analysis. The dissolution problems and interference effects are discussed. Rh and Bi were used as internal standards. The first set of data on several rare earths and other trace elements in the Russian anorthosite reference sample, MO-6 are presented along with data on other samples. The data are compared with the available data. The results obtained with different dissolution methods were found to be in good agreement for the majority of the trace elements. The accuracy and precision achieved (better than 6% RSD in most cases) suggested that the data obtained by ICP-MS for such samples are best suited for geochemical interpretations.
电感耦合等离子体质谱法（ICP-MS）已用于测定斜长岩及相关岩石标准样品中30多种具有地球化学意义的微量元素（钪、钒、铬、钴、镍、铜、锌、镓、铷、锶、钇、锆、铌、铯、钡、铪、钽、铅、钍、铀和稀土元素）。在分析之前，采用敞口酸消解、使用氢氟酸、硝酸和高氯酸进行压力分解以及使用偏硼酸锂进行熔融并随后溶于稀硝酸的方法来分解这些岩石样品。讨论了溶解问题和干扰效应。使用铑和铋作为内标。给出了俄罗斯斜长岩标准样品MO-6中几种稀土元素和其他微量元素的第一组数据以及其他样品的数据。将这些数据与现有数据进行了比较。发现不同溶解方法获得的结果对于大多数微量元素而言吻合良好。所达到的准确度和精密度（在大多数情况下相对标准偏差优于6%）表明，通过ICP-MS获得的此类样品数据最适合用于地球化学解释。
