Inductively coupled plasma mass spectrometry (ICP-MS) has become inevitable for quantitative determination of trace and ultra-trace elements in geological samples. Inferences derived from ICP-MS data sets and other supportive evidence have revolutionized theories on geology/geodynamics. In this scenario, validation through interlaboratory studies plays an important role in assuring the quality of measurements, along with the performance and accreditation programs of the laboratory. The Geological Survey of India (GSI) initiated an interlaboratory testing program on soil and stream sediment testing in which about fifteen laboratories, including our geochemical laboratory participated. Trace and rare-earth elements (REE) determined on the reference material PKS-1 by high-resolution ICP-MS and validated with the certified values for PKS-1 provided by GSI after compilation. The fitness of acquired data for either “pure geochemistry” or “applied geochemistry” was determined based on the Z-scores. The data for most of the analytes fell within the -2 < Z < + 2 range, which included the majority of the trace and REE used in petrogenetic and provenance studies. These results help to review the analytical mismatches observed in the data, optimize necessary aspects and minimize the interference effects caused during analysis.

定量分析地质样品中痕量和超痕量元素的电感耦合等离子体质谱法（ICP-MS）已成为必然。源自ICP-MS数据集的推论和其他支持性证据彻底改变了地质/地球动力学理论。在这种情况下，通过实验室间研究进行的验证在确保测量质量以及实验室的性能和认证计划中起着重要作用。印度地质调查局（GSI）启动了一项针对土壤和河流沉积物测试的实验室间测试计划，包括我们的地球化学实验室在内的大约15个实验室参加了该计划。痕量和稀土元素（REE）通过高分辨率ICP-MS在参考材料PKS-1上测定，并在编译后用GSI提供的PKS-1认证值进行验证。基于Z评分确定“纯地球化学”或“应用地球化学”获得数据的适合度。大多数分析物的数据都在-2 <Z <+ 2范围内，其中包括在成岩和物源研究中使用的大多数痕量和REE。这些结果有助于检查数据中观察到的分析失配，优化必要方面并最大程度地减少分析期间引起的干扰影响。Z <+ 2范围，其中包括在成岩和物源研究中使用的大部分痕量和REE。这些结果有助于检查数据中观察到的分析失配，优化必要方面并最大程度地减少分析期间引起的干扰影响。Z <+ 2范围，其中包括在成岩和物源研究中使用的大部分痕量和REE。这些结果有助于检查数据中观察到的分析失配，优化必要方面并最大程度地减少分析期间引起的干扰影响。