Accurate whole-rock geochemistry analysis by combined ICP-OES and LA-ICP-MS instruments

Authors : Gönenç GÖÇMENGİL, Fatma ŞİŞMAN TÜKEL, Fulya UZUN, Marcel GUILLONG, İsak YILMAZ, Namık AYSAL, Nurullah HANİLÇİ

Pages : 157-165

Doi:10.19111/bulletinofmre.947703

View : 32 | Download : 14

Publication Date : 2022-08-18

Article Type : Other Papers

Abstract :ICP-OES and LA-ICP-MS instruments routinely used to assess the geochemical properties of the various natural and synthetic materials. In this contribution, the analytical routines and method development procedures of the ICP-OES and LA-ICP-MS facilities installed at the İstanbul University-Cerrahpaşa Geological Engineering Department, Geochronology and Geochemistry Laboratory have been evaluated using well-known international rock standards. Sample preparation techniques, method development, experimental setup and measurement conditions for the both ICP-OES and LA-ICP-MS instruments were discussed and specific analyze results of NIST SRM  614, BCR-2, AGV-2, BCR-2G and AGV-2G were evaluated. Flux-free USGS glass standards were  produced by in-house techniques and flux-bearing glasses were produced by fusion of sample with the mixture of ultra-pure lithium-tetraborate, lithium metaborate and lithiumbromide were  evaluated and compared with the well-known reference values in the literature. Relative standard deviation (RSD) values for the major oxide measurements for standards changes between of 0.0 wt.  % to 1.5 wt. %. RSD values for the trace and rare-earth-elements values were mainly lower than 10 wt. %. The results confirm that the both flux-bearing and flux-free glasses reasonably match with the  world-wide inter-laboratory values for international standards samples. The combination of these two instruments can be used to conduct geochemistry of various solid earth materials.
Keywords : LA ICP MS, Geochemistry, ICP OES, Whole rock geochemistry