Portable X‐ray fluorescence (PXRF) spectrometry is a proximal sensing technique whereby low‐power X‐rays are used to make elemental determinations in soils. The technique is rapid, portable, and provides multi‐elemental analysis with results generally comparable to traditional laboratory‐based techniques. Elemental data from PXRF can then be either used directly for soil parameter assessment (e.g., total Ca, total Fe) or as a proxy for predicting other soil parameters of interest (e.g., soil cation‐exchange capacity [CEC], soil reaction, soil salinity) via simple or multiple linear regression. Importantly, PXRF does have some limitations that must be considered in the context of soil analysis. Those notwithstanding, PXRF has proven effective in numerous, agronomic, pedological, and environmental quality assessment applications.

中文翻译：

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便携式X射线荧光光谱法分析土壤

便携式X射线荧光（PXRF）光谱法是一种近端传感技术，利用低功率X射线对土壤进行元素测定。该技术快速，便携式，可提供多元素分析，其结果通常可与传统的基于实验室的技术相媲美。然后，可以将PXRF的元素数据直接用于土壤参数评估（例如，总Ca，总Fe），或用作预测其他感兴趣的土壤参数（例如，土壤阳离子交换量[CEC]，土壤反应，土壤）的代理。盐度）通过简单或多元线性回归。重要的是，PXRF确实有一些在土壤分析中必须考虑的限制。尽管如此，PXRF已被证明在许多农学，儿童学和环境质量评估应用中有效。