Abstract A simple, rapid and nondestructive wavelength dispersive X-ray fluorescence spectrometry (WD-XRF) was developed for the determination of sulfur in soils and stream sediments. WD-XRF was used to study the spectral line shifts and matrix effects of different inorganic species such as sulfide, elemental sulfur, thiosulfate, sulfite and sulfate. Analysis of the spectral lines in the S Kα wavelength range confirmed that Mo Lα (2θ = 111.799 °) lines interfered with S Kα (2θ=110.683°) lines. Twenty-seven soils and stream sediments reference samples were used to calibrate and evaluate the analytical method and the detection limit for sulfur was 5.43 mg/kg. The relative error (%RE) of the reference samples was −8.3–6.4%, showing good accuracy. However, the single form of sulfur (sulfide, sulfite and sulfate) had a significant matrix enhancement effect in the sodium carbonate matrix, especially for sulfides, and its relative error was 11.9 ~ 26.9%. The results of WD-XRF, inductively coupled plasma emission spectroscopy (ICP-OES) and elemental infrared analyzer were compared. The fitness for purpose of the results was also evaluated by the quality criteria test proposed by the International Geological Correlation Programme (IGCP), from which it can be deduced that the method was adequate considering geochemical mapping application.

中文翻译：

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波长色散 X 射线荧光光谱法测定土壤和河流沉积物中的硫

摘要 开发了一种简单、快速、无损的波长色散 X 射线荧光光谱法 (WD-XRF)，用于测定土壤和河流沉积物中的硫。WD-XRF 用于研究不同无机物质（如硫化物、元素硫、硫代硫酸盐、亚硫酸盐和硫酸盐）的谱线位移和基质效应。对 S Kα 波长范围内的谱线分析证实，Mo Lα (2θ = 111.799°) 谱线与 S Kα (2θ=110.683°) 谱线发生干涉。27 个土壤和河流沉积物参考样品用于校准和评估分析方法，硫的检出限为 5.43 mg/kg。参考样品的相对误差（%RE）为-8.3-6.4%，显示出良好的准确性。然而，单一形式的硫（硫化物、亚硫酸盐和硫酸盐）在碳酸钠基质中具有显着的基质增强作用，尤其是硫化物，其相对误差为11.9～26.9%。对WD-XRF、电感耦合等离子体发射光谱(ICP-OES)和元素红外分析仪的结果进行了比较。结果的适用性还通过国际地质相关计划（IGCP）提出的质量标准测试进行评估，从中可以推断出该方法考虑到地球化学填图的应用是足够的。