评估便携式X射线光器对金属化物检测和土壤污染状况的可靠性
Zain Alabdain Alqattan1, Janick F Artiola1, Dan Walls1,2
1Department of Environmental Science, College of Agriculture, Life and Environmental Sciences, University of Arizona, Tucson, AZ, USA.
Environmental monitoring and assessment
|July 29, 2024
概括
便携式X射线光光谱 (pXRF) 是用于监测边缘化社区的土壤污染物的诱导合等离子体质谱 (ICP-MS) 的可靠和经济有效的替代方案. 这种方法准确地测量了关键元素,有助于环境公共卫生工作.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 公共卫生 公共卫生
背景情况:
- 边缘化社区在土壤监测和知识转移方面面临障碍.
- 准确的土壤污染物分析对环境公共卫生至关重要.
- 传统的方法,如ICP-MS是有效的,但昂贵和耗时.
研究的目的:
- 为了比较便携式X射线光光谱 (pXRF) 与感应合等离子体质谱法 (ICP-MS) 的有效性,用于土壤污染物分析.
- 评估pXRF在具有不同土壤准备实践的边缘化社区的可靠性.
- 确定pXRF是否是一种可行的,具有成本效益的环境监测替代方案.
主要方法:
- 从住宅 (美国亚利桑那州) 和公共场所 (美国纽约特洛伊州) 采集了地表土壤样本.
- 使用pXRF和ICP-MS分析样本,同时考虑不同的土壤准备方法.
- 使用统计分析 (t-test,ANOVA,Bland-Altman图片) 和计算的污染指数 (PLI,EF,Igeo).
主要成果:
- 对于几个元素 (As,Ba,Ca,Cu,Mn,Pb,Zn),pXRF与ICP-MS没有显著差异.
- 污染负荷指数 (PLI) >1表示这两个州的土壤污染.
- 对于大多数元素,pXRF表现出与ICP-MS类似的污染评估,对于关键污染物证明可靠.
结论:
- pXRF是一种可靠且具有成本效益的工具,用于选土壤样本的常见环境污染物.
- 这种方法可以改善贫困社区的土壤监测,支持环境公共卫生.
- pXRF为评估土壤污染提供了一种实用的ICP-MS替代方案.
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