Access the full text.
Sign up today, get DeepDyve free for 14 days.
J. Coates (2006)
Interpretation of Infrared Spectra, A Practical Approach
I. Bergdahl, K. Torén, K. Eriksson, U. Hedlund, T. Nilsson, R. Flodin, B. Järvholm (2004)
Increased mortality in COPD among construction workers exposed to inorganic dustEuropean Respiratory Journal, 23
J. Dodgson, W. Whittaker (1973)
The determination of quartz in respirable dust samples by infrared spectrophotometry--I: The potassium bromide disc method.The Annals of occupational hygiene, 16 4
B. Hemmateenejad, M. Akhond, F. Samari (2007)
A comparative study between PCR and PLS in simultaneous spectrophotometric determination of diphenylamine, aniline, and phenol: Effect of wavelength selection.Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67 3-4
P. Wentzell, Lorenzo Montoto (2003)
Comparison of principal components regression and partial least squares regression through generic simulations of complex mixturesChemometrics and Intelligent Laboratory Systems, 65
Taekhee Lee, W. Chisholm, M. Kashon, R. Key-Schwartz, M. Harper (2013)
Consideration of Kaolinite Interference Correction for Quartz Measurements in Coal Mine DustJournal of Occupational and Environmental Hygiene, 10
K. Pickard, R. Walker, N. West (1985)
A comparison of X-ray diffraction and infrared spectrophotometric methods for the analysis of alpha-quartz in airborne dusts.The Annals of occupational hygiene, 29 2
A. Weakley, Arthur Miller, P. Griffiths, Sean Bayman (2014)
Quantifying silica in filter-deposited mine dusts using infrared spectra and partial least squares regressionAnalytical and Bioanalytical Chemistry, 406
P. Stacey, M. Mecchia, S. Verpaele, C. Pretorius, R. Key-Schwartz, M. Mattenklott, C. Eypert-Blaison, A. Thorpe, Paul Roberts, G. Frost (2013)
Differences Between Samplers for Respirable Dust and the Analysis of Quartz—An International Study
Xueqiu He, Xianfeng Liu, B. Nie, Da-zhao Song (2017)
FTIR and Raman spectroscopy characterization of functional groups in various rank coalsFuel, 206
P. Stacey (2019)
A study to assess the performance of an “X-ray powder diffraction with Rietveld” approach for measuring the crystalline and amorphous components of inhalable dust collected on aerosol sampling filtersPowder Diffraction, 34
I. Jolliffe, J. Cadima (2016)
Principal component analysis: a review and recent developmentsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 374
J. Madejová, P. Komadel (2001)
Baseline studies of the clay minerals society source clays: Infrared methodsClays and Clay Minerals, 49
R. Foster, R. Walker (1984)
Quantitative determination of crystalline silica in respirable-size dust samples by infrared spectrophotometry.The Analyst, 109 9
J. Bland, D. Altman (2003)
Applying the right statistics: analyses of measurement studiesUltrasound in Obstetrics and Gynecology, 22
E. Cauda, Arthur Miller, P. Drake (2016)
Promoting early exposure monitoring for respirable crystalline silica: Taking the laboratory to the mine siteJournal of Occupational and Environmental Hygiene, 13
C. Breen, F. Clegg, M. Herron, G. Hild, S. Hillier, T. Hughes, T. Jones, A. Matteson, J. Yarwood (2008)
Bulk mineralogical characterisation of oilfield reservoir rocks and sandstones using Diffuse Reflectance Infrared Fourier Transform Spectroscopy and Partial Least Squares analysisJournal of Petroleum Science and Engineering, 60
E. Bye (1994)
Chemometrics in Aerosol Analysisquantitative Analysis of Silica Dust Mixtures by Multivariate Calibration Applied to Infrared SpectroscopyAnnals of Occupational Hygiene, 38
(2012)
The burden of occupational cancer in Great Britain Lung cancer. HSE Research Report RR858 Bootle
M. Ross, J. Murray (2004)
Occupational respiratory disease in mining.Occupational medicine, 54 5
Arthur Miller, A. Weakley, P. Griffiths, E. Cauda, Sean Bayman (2017)
Direct-on-Filter α-Quartz Estimation in Respirable Coal Mine Dust Using Transmission Fourier Transform Infrared Spectrometry and Partial Least Squares RegressionApplied Spectroscopy, 71
B Hemmateenejad, M Akhond, F Samari (2007)
A comparative study between PCR and PLS in simultaneous spectrophotometric determination of diphenylamine, aniline, and phenol: Effect of wavelength selectionSpectrochim Acta Part A: Mol Biomol Spectros, 67
J. Hart, Daniel Autenrieth, E. Cauda, Lauren Chubb, T. Spear, S. Wock, Scott Rosenthal (2018)
A comparison of respirable crystalline silica concentration measurements using a direct-on-filter Fourier transform infrared (FT-IR) transmission method vs. a traditional laboratory X-ray diffraction methodJournal of Occupational and Environmental Hygiene, 15
(2003)
EH75 Respirable Crystalline Silica, variability in fibrogenic potency and exposure-response relationships for silicosis
Exposure to respirable crystalline silica (RCS) is potentially hazardous to the health of thousands of workers in Great Britain. Both X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy can be used to measure RCS to assess exposures. The current method outlined in the Health and Safety Executive’s (HSE) Methods for the Determination of Hazardous Substances (MDHS) guidance series is ‘MDHS 101 Crystalline silica in respirable airborne dust - Direct-on-filter analyses by infrared spectroscopy or x-ray’. This describes a procedure for the determination of time-weighted average concentrations of RCS either as quartz or cristobalite in airborne dust. FTIR is more commonly employed because it is less expensive, potentially portable and relatively easy to use. However, the FTIR analysis of RCS is affected by spectral interference from silicates. Chemometric techniques, known as Partial Least Squares Regression (PLSR) and Principal Component Regression (PCR), are two computational processes that have the capability to remove spectral interference from FTIR spectra and correlate spectral features with constituent concentrations. These two common chemometric processes were tested on artificial mixtures of quartz and kaolinite in coal dust using the same commercially available software package. Calibration, validation and prediction samples were prepared by collecting aerosols of these dusts onto polyvinylchloride (PVC) filters using a Safety in Mines Personal Dust Sampler (SIMPEDS) respirable cyclone. PCR and PLSR analyses were compared when processing the same spectra. Good correlations between the target values, measured using XRD, were obtained for both the PCR and PLSR models e.g. 0.98–0.99 (quartz), 0.98–0.98 (kaolinite) and 0.96–0.97 (coal). The level of agreement between PCR and PLSR was within the 95% confidence value for each analyte. Slight differences observed between predicted PCR and PLSR values were due to the number of optimal principal components applied to each chemometric process. The presence of kaolinite in these samples caused an 18% overestimation of quartz, for the FTIR, when following MDHS 101 without a chemometric method. Chemometric methods are a useful approach to obtain interference-free results for the measurement of RCS from some workplace environments and to provide a multicomponent analysis to better characterise exposures of workers.
Annals of Work Exposures and Health (formerly Annals Of Occupational Hygiene) – Oxford University Press
Published: Oct 1, 2021
Keywords: quartz; respirable crystalline silica; coal dust; kaolinite; principal component regression; partial least squares regression
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.