Mass fractions of Cu, Zn, Ga, Ag, Cd, In, Sn and Tl were determined via isotope dilution quadrupole ICP‐MS in twenty‐one geological reference materials (RMs) and the carbonaceous chondrites Orgueil (CI1), Murchison (CM2) and Allende (CV3). The RMs comprise basaltic/mafic (BCR‐2, BE‐N, BHVO‐1, BHVO‐2, BIR‐1, BRP‐1, JB‐2, OKUM, W‐2, WS‐E), intermediate/felsic (AGV‐2, G‐2, JA‐2, RGM‐1), ultramafic (DTS‐2b, MUH‐1, PCC‐1, UB‐N) and sedimentary (MAG‐1, OU‐6) rocks. Pressure digestion was applied for nonbasaltic samples to ensure effective sample digestion. For basaltic RMs, hot plate digestion was found to be sufficient for a quantitative recovery of the target elements. To minimise interferences and increase ion beam intensities during isotope ratio analyses by ICP‐MS, separation of the target elements was carried out from single sample aliquots using a novel anion exchange procedure. The intermediate precision (2s) estimated from two to four replicate analyses was usually < 4% and results are in agreement with literature data, where available. Especially for Ag and Tl, the intermediate precision was compromised, likely due to low ion beam intensities and, hence, higher background and blank contributions. For ultramafic RMs, nugget effects and incomplete digestion might compromise the intermediate precision. Results for the carbonaceous chondrites Orgueil (CI1), Murchison (CM2) and Allende (CV3) agree well with previously reported data.

中文翻译：

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同位素稀释ICP-MS测定地质参考物质和球粒陨石中的Cu，Zn，Ga，Ag，Cd，In，Sn和Tl

通过同位素稀释四极杆ICP-MS测定二十一种地质参考物质（RM）和碳质球粒陨石Orgueil（CI1），Murchison（CM2）中的Cu，Zn，Ga，Ag，Cd，In，Sn和Tl的质量分数和阿连德（CV3）。RM包括玄武质/镁铁质（BCR-2，BE‐N，BHVO-1，BHVO-2，BIR-1，BRP-1，JB-2，OKUM，W-2，WS‐E），中等/长英质（ AGV-2，G-2，JA-2，RGM-1），超镁铁质（DTS-2b，MUH-1，PCC-1，UB-N）和沉积岩（MAG-1，OU-6）。非碱性样品采用压力消解以确保有效的样品消解。对于玄武质RM，发现热板消解足以定量回收目标元素。为了在通过ICP-MS进行同位素比分析时最大程度地减少干扰并增加离子束强度，使用新颖的阴离子交换程序从单个样品等分试样中分离目标元素。中级精度（2s），从2到4次重复分析估计的结果通常<4％，并且结果与文献数据一致（如果有）。尤其是对于Ag和Tl，中间精度受到了损害，这可能是由于离子束强度低以及因此背景和空白贡献较高所致。对于超镁铁RM，金块效应和不完全消化可能会损害中等精度。碳质球粒陨石Orgueil（CI1），Murchison（CM2）和Allende（CV3）的结果与先前报道的数据非常吻合。