Characterization of calibration materials for trace element analysis and fingerprint studies of gold using LA-ICP-MS

Early Cambodian gold and silver from Prohear: composition, trace elements and gilding

“…The data acquisition sequences consisted of blocks of five samples at most, each ablated three times, which were enclosed by blocks of calibration solutions, solid reference materials and jewellery alloys included to monitor higher silver and copper contents, each measured twice. The data and standard deviations for the gold reference materials NA-AU-30 and NA-AU-31 (Norddeutsche Affinerie, Hamburg; Kovacs et al, 2009) are given in Table 2.…”

Calibration and correction of LA-ICP-MS and LA-MC-ICP-MS analyses for element contents and isotopic ratios

“…Reference materials preparation techniques including (1) pressed-powder pellets with (Jarvis and Williams, 1993;O'Connor et al, 2007) and without (Arroyo et al, 2009;Garbe-Sch€ onberg and Müller, 2014) binders; (2) fused glasses with (Becker and Dietze, 1999;Eggins, 2003;Perkins et al, 1993) and without flux agent (Fedorowich et al, 1993;He et al, 2016;Jochum et al, 2000;Kurosawa et al, 2006;Nehring et al, 2008;Norman et al, 1996;Reid et al, 1999;Stoll et al, 2008;Zhu et al, 2013). Solution-based calibration method (Becker, 2002;Dressler et al, 2010;Günther et al, 1997;Kovacs et al, 2009;Leach et al, 1999;Thompson et al, 1989;Yang et al, 2010) can be applied in the absence of suitable solid reference materials. Although much effort has been expended in finding ways to produce multi-element solid reference materials cheaply and rapidly, the number of off-the-shelf commercially available solid reference materials is very limited (Jochum and Stoll, Gilbert et al (2013) 2008) ( Table 2).…”

Microchemical signature of alluvial gold from two contrasting terrains in Cameroon

“…)the ratio ThOþ/Thþ. Measurements on the gold reference material NA1(Kovacs et al, 2009) were performed for external calibration; reproducibility and accuracy were determined on other gold reference materials (NA2, 750 and 585).…”