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煤矿灰尘中的可呼吸的二氧化颗粒:使用扫描电子显微镜与能量分散式X射线光谱学收集的图像库数据集

Çiğdem Keleş¹, Emily Sarver¹

¹Department of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA 24061, USA.

|October 17, 2023

概括

这项研究展示了煤矿灰尘中可呼吸的二氧化颗粒的图像库. 了解这些现实粒子有助于评估二氧化暴露,并改进防尘策略.

科学领域:

采矿工程采矿工程采矿工程
材料科学材料科学材料科学
环境健康环境健康

背景情况:

可呼吸的二氧化颗粒在地下煤矿中构成健康风险.
描述这些颗粒对于准确的暴露评估和控制至关重要.
现有的研究可能不能完全代表真实矿山环境中的二氧化颗粒的复杂性.

研究的目的:

在煤矿灰尘中发现的可呼吸的二氧化颗粒创建一个全面的图像库.
通过先进的显微镜和光谱学,提供这些粒子的详细表征.
提供一套数据集,增强对采矿环境中颗粒行为的理解.

主要方法:

从美国地下矿山收集了可呼吸煤矿灰尘 (RCMD) 的样本.
从原材料 (煤炭,岩石) 和参考材料中产生的实验室灰尘.
使用扫描电子显微镜与能量分散式X射线光谱学 (SEM-EDX) 识别和分析了282个颗粒.
在低 (5 kV) 和高 (20 kV) 加速电压下成像的粒子,以5000×20,000×放大率捕捉微图.
叠加的SEM显微镜与Si和Al含量的元素图,并收集了用于定量元素分析的光谱.

主要成果:

开发了一个 282 个可呼吸的二氧化颗粒的图像库.
详细描述粒子形态和元素组成 (Si和Al百分比).
通过元素映射在单个粒子内的Si和Al分布的视觉表示.

结论:

该数据集提供了关于可呼吸的颗粒在实际煤矿环境中的性质的宝贵见解.
这个资源可以为设计和解释有关可呼吸暴露的研究提供信息.
这些发现有助于开发和完善采样分析,监测技术和采矿操作中的防尘措施.

关键词:

煤炭工人的肺炎,SEM-EDX 职业健康职业健康职业健康职业健康可以呼吸的晶体二氧化.化是一种化.

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