Determination of Trace Elements in Geological Reference Materials G‐3, GSP‐2 and SGD‐1a by Low‐Dilution Glass Bead Digestion and ICP‐MS |
| |
| Authors: | Chan‐Soo Park Hyung Seon Shin Haeyoung Oh Jong Hwa Moon Hana Cho Chang‐sik Cheong |
| |
| Institution: | 1. Division of Earth and Environmental Sciences, Korea Basic Science Institute, , Cheongwon‐gun, Chungbuk, 363‐883 Korea;2. Neutron Science Division, Korea Atomic Energy Research Institute, , Daejeon 305‐353, Korea |
| |
| Abstract: | We present a revised alkali fusion method for the determination of trace elements in geological samples. Our procedure is based on simple acid digestion of powdered low‐dilution (flux : sample ≈ 2 : 1) glass beads where large sample dilution demanded by high total dissolved solids, a main drawback of conventional alkali fusion, could be circumvented. Three geological reference materials (G‐3 granite, GSP‐2 granodiorite and SGD‐1a gabbro) decomposed by this technique and routine tabletop acid digestion were analysed for thirty trace elements using a quadrupole ICP‐MS. Results by conventional acid digestion distinctly showed poor recoveries of Zr, Hf and rare earth elements due to incomplete dissolution of resistant minerals. On the other hand, results obtained by our method were in reasonable agreement with reference data for most analytes, indicating that refractory minerals were efficiently dissolved and volatile loss was insignificant. |
| |
| Keywords: | ICP‐MS reference materials trace elements sample decomposition fused beads ICP‐MS maté riaux de ré fé rence é lé ments traces dé composition d'é chantillon perles de fusion |
|
|
