评估矿物质在红外吸收的干扰潜力,基于矿山灰尘中的可呼吸晶体二氧化的量化
David A Parks1, Seth A Finley1, Priscilla M Tjandra2
1Spokane Mining Research Division, National Institute for Occupational Safety and Health Spokane Mining Research Division Ringgold Standard Institution, Spokane, Washington.
Journal of occupational and environmental hygiene
|December 10, 2025
概括
暴露于可呼吸晶体二氧化 (RCS) 给矿工带来了严重的健康风险. 这项研究用红外光谱测量量矿物干扰,这是一种便携式RCS检测的方法,识别了诸如石,青石和动石等关键干扰物.
科学领域:
- 职业健康 职业健康 职业健康
- 分析化学 分析化学
- 矿物学是什么?矿物学是什么?
背景情况:
- 矿工接触到可呼吸的晶体二氧化 (RCS),这是已知的致命肺部疾病的原因,如病和肺癌.
- 便携式红外光谱仪为矿场的轮班结束RCS量化提供了潜在的可能性.
- 矿山灰中的矿物干扰可能会与的红外吸收带重叠,阻碍了准确的量化.
研究的目的:
- 识别和评估潜在的矿物干扰物,影响金属矿山中基于红外光谱的RCS量化.
- 量化RCS检测的关键光谱区域中的44种潜在矿物质干扰的大小.
主要方法:
- 分析了27个具有历史高RCS水平的金属矿的地质数据.
- 福里埃变换红外光谱法 (FT-IR) 用于测量44种潜在干扰物的单位质量吸收率.
- 通过比较α-石英双重区 (816-767 cm-1) 中的整合吸收相对于RCS来量化干扰.
主要成果:
- 三种矿物质 (甲基石,青石和动石) 的干扰率为10%或更高,尽管在标准的RCS红外线方法中没有列出它们.
- 通常引用的干扰剂,地 Albite和Anorthite,并没有干扰10%或更多.
- 干扰的量化为开发准确的便携式RCS检测方法提供了关键数据.
结论:
- 特定的矿物质,如石,青石和动石显著干扰基于红外线的RCS量化.
- 该研究强调,需要考虑地质特异性干扰,以便可靠的便携式RCS监控.
- 精确量化矿物干扰对于保护矿工免受与相关的呼吸道疾病至关重要.
相关概念视频
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences
1.2K
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
1.2K
Atomic Absorption Spectroscopy: Interference
2.0K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
2.0K
Infrared (IR) Spectroscopy: Overview
4.6K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
4.6K
IR Spectrum Peak Intensity: Amount of IR-Active Bonds
971
When infrared radiation is passed through a molecule, absorption occurs if the molecule's vibration leads to a substantial change in its bond dipole moment. Transitions between vibrational energy levels, typically corresponding to infrared frequencies (4000–400 cm−1), allow absorption if the vibration significantly alters the dipole moment, making the molecule infrared active. The molecular bonds have different stretching and bending vibrations, resulting in various peaks with...
971
IR Spectrometers
2.2K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
2.2K
IR Frequency Region: Fingerprint Region
1.8K
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
1.8K


