Rapid screening and quantification of heavy metals in traditional Chinese herbal medicines using monochromatic excitation energy dispersive X-ray fluorescence spectrometry,Analyst

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Rapid screening and quantification of heavy metals in traditional Chinese herbal medicines using monochromatic excitation energy dispersive X-ray fluorescence spectrometry
Analyst ( IF 3.6 ) Pub Date : 2022-07-18 , DOI: 10.1039/d2an00752e
Xing Ma _{1,

2} , Marti Z Hua ₃ , Chao Ji ₄ , Jing Zhang ₂ , Rui Shi ₅ , Yabing Xiao ₂ , Xiaojing Liu ₆ , Xiahong He _{4,

5} , Wenjie Zheng ₁ , Xiaonan Lu ₃

Affiliation

Traditional Chinese herbal medicines are subject to heavy metal contamination. Standard detection methods are too complicated, time-consuming, and expensive for routine analysis, so low-cost methods are in high demand for rapid on-site screening. This study reports a high-sensitivity X-ray fluorescence (HS-XRF) method to determine As, Pb, and Cd residues simultaneously in herbal medicines. It couples monochromatic excitation energy dispersive X-ray fluorescence spectrometry and the fast fundamental parameters method. Each test takes only 10–30 min and costs 1/10th to 1/5th of the standard method. The detection limits, precision and accuracy were evaluated using different approaches, and application notes in practice are also proposed. This study is the first attempt to establish and evaluate HS-XRF in analyzing multiple heavy metals in herbal medicines. This rapid screening method would promote the testing efficiency and thus improve the monitoring of heavy metal contamination in herbal medicines.

中文翻译：

单色激发能量色散X射线荧光光谱法快速筛查和定量中药中的重金属

传统中草药受到重金属污染。标准检测方法过于复杂、耗时且昂贵，无法进行常规分析，因此对低成本的方法进行快速现场筛查的需求量很大。本研究报告了一种同时测定草药中 As、Pb 和 Cd 残留量的高灵敏度 X 射线荧光 (HS-XRF) 方法。它将单色激发能量色散X射线荧光光谱法与快速基本参数法相结合。每次测试仅需 10-30 分钟，成本仅为标准方法的 1/10 至 1/5。使用不同的方法对检测限、精密度和准确度进行了评估，并提出了实践中的应用说明。本研究是建立和评估 HS-XRF 在分析草药中多种重金属方面的首次尝试。这种快速筛选方法将提高检测效率，从而改善对草药中重金属污染的监测。

更新日期：2022-07-18

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