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Updated: Jun 3, 2025

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

应用X射线衍射与瑞特维尔德精细化量化矿物成分,包括可呼吸尘埃中的晶体二氧化

Johanne Østereng Halvorsen^1,2, Peter Stacey³, Pål Graff^1,2

¹STAMI, National Institute of Occupational Health, Oslo, Norway.

Journal of occupational and environmental hygiene

|January 6, 2025

概括

瑞特维尔德精炼精确地量化了气溶样本中的可呼吸晶体二氧化 (RCS) 和其他矿物质. 这种方法显示了与标准技术相似的结果,即使在复杂的现场样本中也是如此.

科学领域:

矿物学是什么?矿物学是什么?
分析化学分析化学
职业健康职业健康职业健康

背景情况:

可呼吸的晶体二氧化 (RCS) 对健康构成重大风险.
准确量化空气中的灰尘中的RCS对于职业安全至关重要.
现有的RCS分析方法可能耗时或缺乏精度.

研究的目的:

评估瑞特维尔德精炼在可呼吸气溶样本中量化RCS的有效性.
将瑞特维尔德精炼结果与NIOSH 7500等既定方法进行比较.
用各种矿物成分和样本质量来评估方法的性能.

主要方法:

瑞特维尔德精炼分析应用于实验室和现场气溶样本.
与NIOSH 7500方法 (,晶体,XRD) 的比较和重力测量.
使用内部标准来纠正现场样本中的无形含量和未识别阶段.

主要成果:

瑞特维尔德精炼公司在实验室和实地样本中成功量化了RCS和其他晶体矿物.
结果与石英的NIOSH 7500方法相似.
实验室样品的线性观察到20毫克,量化极限低至5微克石英.
对高达15毫克总质量和1.811%重量的石英含量的现场样本实现了准确的量化.
最小样本质量为0.5毫克被认为是瑞特维尔德精炼的最佳.

结论:

瑞特维尔德精炼是一种强大而准确的方法,用于确定可呼吸尘埃中的RCS和其他晶体相.
这种方法即使在复杂的矩阵和高质量负载下也是有效的,为职业暴露监测提供了有价值的替代方案.

关键词:

矿物阶段是矿物阶段.石英石英是一种石英石英.可呼吸的晶体二氧化.可以呼吸的颗粒物物.

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