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ISO 19087:2018 Workplace air - Analysis of respirable crystalline silica by Fourier-Transform Infrared spectroscopy >
ISO 19087:2018 Workplace air - Analysis of respirable crystalline silica by Fourier-Transform Infrared spectroscopy, 2018
- Foreword
- Introduction
- 1 Scope
- 2 Normative reference
- 3 Terms and definitions
- 4 Principle
- 5 Apparatus, equipment and reagents
- 6 Sampling
- 6.1 Sample collection
- 6.2 Transport
- 7 Preparation
- 7.1 Preparation of calibration samples
- 7.1.1 Preparation of direct-on-filter calibration samples
- 7.1.2 Preparation of redeposition calibration samples
- 7.1.3 Preparation of KBr pellet calibration samples
- 7.2 Preparation of the collection substrate for indirect analysis
- 7.2.1 PVC, MCE and polycarbonate filters
- 7.2.2 Cellulose nitrate filters
- 7.2.3 Polyurethane foams
- 7.3 Redeposition onto analysis filter
- 7.3.1 Crucibles from the furnace
- 7.3.2 Bottles or beakers from a plasma asher
- 7.4 Preparation of KBr pellets
- 8 Analytical procedure
- 8.1 Gravimetric analysis for respirable dust
- 8.2 Fourier-Transform Infrared analysis
- 8.2.1 Background correction
- 8.2.2 Measurement
- 8.3 Calibration
- 9 Evaluation of Fourier-Transform Infrared spectra
- 9.1 General aspects
- 9.2 RCS quantification using peak height
- 9.3 RCS quantification using peak integral
- 9.3.1 Determination of the absorption in the range of the analytical bands[12][14]
- 9.3.2 Subtraction of a reference spectrum[20]
- 9.3.3 Other evaluation methods
- 9.4 Interferences
- 10 Calculation of results
- 10.1 Concentration of RCS
- 11 Performance characteristics
- 11.1 Limit of detection
- 11.2 Limits of quantification
- 11.3 Uncertainty
- 11.4 Differences between samplers
- 12 Test report
- Annex A (normative) Sample treatment strategies for the removal of interferences
- Annex B (informative) Differences between samplers (cyclones and other types)
- Annex C (informative)
- Annex D (normative) Examples of dust collection substrates and analysis filters
- Bibliography [Go to Page]