Spectrophotometric method for contamination control of gas media filters
| Autor: | S N Litunov, L F Nemirova, I A Sysuev, S Sh Tashpulatov, Ch T Kochkorbaeva, E G Bezzateeva |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 2182:012009 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/2182/1/012009 |
| Popis: | The possibility of measuring air filter contamination by colourimetry methods is investigated. It is found that the optical density Drel, measured relative to a clean filter surface can be used to assess filter contamination with coloured contaminant. This indicator is convenient for the specific weight of the contaminant in the range of 5-50 g/m2 for substances with a density ρ < 1 g/cm3, and for the specific weight of the contaminant 10-250 g/m2 for ρ > 1. It is shown that in case of a colour dust contaminated filter, the most reliable indicator is the colour difference ΔE of the contaminated surface relative to the clean one. The analysis of colour charts a*b*, a*L* and b*L* constructed in the CIE L*a*b*-1976 system shows that the lightness value ΔL* is appropriate to measure dark contaminants, and the value ΔE is acceptable for light contaminants. |
| Databáze: | OpenAIRE |
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