Abstract Multi-element analysis of discrete samples via X-Ray fluorescence or inductively coupled plasma spectrometry is commonly used to characterise the composition of solid geo-materials for environmental geochemical characterisation. Conventional geochemical analysis of individual samples is time consuming and costly, which often results in low-resolution sampling with the danger of missing crucial information. X-ray fluorescence Core Scanning (XCS) provides an alternative method to obtain elemental information, which can be potentially used quantitatively when combined with the Multivariate Log-ratio Calibration (MLC) approach. The suitability of the XCS-MLC method was tested for environmental geochemical characterisation on four terrestrial Holocene-Pleistocene sediment cores that have a variable lithology (clay, sand, peat, with variable calcareous content), were stored at ambient room conditions and scanned post sampling. Element contents based on XCS-MLC and conventional geochemical analysis proved to be comparable (R2 > 0.5) for Al, Ca, Cr, Fe, K, Sr, Mn, Ni, Pb, Rb, S, Si, Ti, Zn, Zr, and also for Br as proxy for organic matter. For As, Cu and Ba the correlations were less satisfactory (R2

中文翻译：

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校准 X 射线荧光岩心扫描对异质沉积岩心环境地球化学表征的适用性

摘要 通过 X 射线荧光或电感耦合等离子体光谱法对离散样品进行多元素分析，通常用于表征固体地质材料的成分，以进行环境地球化学表征。单个样品的常规地球化学分析既费时又费钱，这通常会导致采样分辨率低，存在丢失关键信息的危险。X 射线荧光岩心扫描 (XCS) 提供了一种获取元素信息的替代方法，当与多变量对数比校准 (MLC) 方法结合时，可以潜在地定量使用。XCS-MLC 方法的适用性在四个具有可变岩性（粘土、砂、泥炭、具有可变钙质含量），在室温条件下储存并在取样后扫描。基于 XCS-MLC 和常规地球化学分析的元素含量证明与 Al、Ca、Cr、Fe、K、Sr、Mn、Ni、Pb、Rb、S、Si、Ti、Zn、Zr 相当（R2 > 0.5） ，以及 Br 作为有机物的代表。对于 As、Cu 和 Ba，相关性不太令人满意（R2