Correction factor for real-time determination of wood dust mass concentration by photometric method

Samples of wood dust were collected in the working environment of wood machining processes for the purpose of determining correction factors for measuring mass concentration of wood dust by photometric method. According to the NIOSH 0600 Norm and NIOSH Manual of Analytical Methods for photometric me...

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Autores principales:	Ankica Čavlović, Ružica Beljo Lučić, Ivan Bešlić, Matija Jug, Josip Ištvanić
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2009
Materias:	photometry gravimetric method exposure to wood dust inhalable particles Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/2dca2fb39fcc4f1286b56c154956d453
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spelling	oai:doaj.org-article:2dca2fb39fcc4f1286b56c154956d4532021-12-02T06:16:46ZCorrection factor for real-time determination of wood dust mass concentration by photometric method0012-6772https://doaj.org/article/2dca2fb39fcc4f1286b56c154956d4532009-03-01T00:00:00Zhttp://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=54714https://doaj.org/toc/0012-6772Samples of wood dust were collected in the working environment of wood machining processes for the purpose of determining correction factors for measuring mass concentration of wood dust by photometric method. According to the NIOSH 0600 Norm and NIOSH Manual of Analytical Methods for photometric measurement, correction factor must be determined before measuring mass concentration of different types of dust. The correction factor is defined as the ratio of mass concentration obtained by the gravimetric method and mass concentration obtained by the photometric method. The correction factor should be determined because of the influence of particle size distribution, density, particle shape and refractive index on values obtained by the photometric method. The aim of the research was to investigate the possibility of using photometric method for the determination of mass concentration of inhalable fraction of airborne wood dust. Sampling was conducted in several woodworking plants during the machining of wet and dry beech-wood, wet and dry oak-wood, wet fir-wood and particleboard. There is a significant correlation between the results obtained by the photometric method and values obtained by the gravimetric method (R2=0.88) and this is the base for using the photometric method in determining mass concentration of airborne wood dust. According to the results of this research, correction factors must be determined and used for measuring mass concentration of inhalable wood dust during the machining of different wood species and wood with different moisture content. The best corresponding results of photometric and gravimetric methods are obtained for the samples collected during machining of wet fir-wood (k=1). The largest correction factor should be used in determining workers exposure to wood dust during machining of dry oak-wood (k=4.4) and particleboard (k=4.5). Only the results of 8-hour measurements of mass concentration by gravimetric methods can be compared with limit values of aerosol mass concentration. However, the determination of mass concentration of wood dust by photometric method may be applied not only for short-term exposure measurements but also for additional measurements within the analysis of exposure time profile at workplaces during the working day. Additionally, photometric method is very useful for simultaneous collection of samples of the respirable, thoracic and inhalable fractions of airborne particulate matter.Ankica ČavlovićRužica Beljo LučićIvan BešlićMatija JugJosip IštvanićUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlephotometrygravimetric methodexposure to wood dustinhalable particlesForestrySD1-669.5ENDrvna Industrija, Vol 60, Iss 1, Pp 33-42 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	photometry gravimetric method exposure to wood dust inhalable particles Forestry SD1-669.5
spellingShingle	photometry gravimetric method exposure to wood dust inhalable particles Forestry SD1-669.5 Ankica Čavlović Ružica Beljo Lučić Ivan Bešlić Matija Jug Josip Ištvanić Correction factor for real-time determination of wood dust mass concentration by photometric method
description	Samples of wood dust were collected in the working environment of wood machining processes for the purpose of determining correction factors for measuring mass concentration of wood dust by photometric method. According to the NIOSH 0600 Norm and NIOSH Manual of Analytical Methods for photometric measurement, correction factor must be determined before measuring mass concentration of different types of dust. The correction factor is defined as the ratio of mass concentration obtained by the gravimetric method and mass concentration obtained by the photometric method. The correction factor should be determined because of the influence of particle size distribution, density, particle shape and refractive index on values obtained by the photometric method. The aim of the research was to investigate the possibility of using photometric method for the determination of mass concentration of inhalable fraction of airborne wood dust. Sampling was conducted in several woodworking plants during the machining of wet and dry beech-wood, wet and dry oak-wood, wet fir-wood and particleboard. There is a significant correlation between the results obtained by the photometric method and values obtained by the gravimetric method (R2=0.88) and this is the base for using the photometric method in determining mass concentration of airborne wood dust. According to the results of this research, correction factors must be determined and used for measuring mass concentration of inhalable wood dust during the machining of different wood species and wood with different moisture content. The best corresponding results of photometric and gravimetric methods are obtained for the samples collected during machining of wet fir-wood (k=1). The largest correction factor should be used in determining workers exposure to wood dust during machining of dry oak-wood (k=4.4) and particleboard (k=4.5). Only the results of 8-hour measurements of mass concentration by gravimetric methods can be compared with limit values of aerosol mass concentration. However, the determination of mass concentration of wood dust by photometric method may be applied not only for short-term exposure measurements but also for additional measurements within the analysis of exposure time profile at workplaces during the working day. Additionally, photometric method is very useful for simultaneous collection of samples of the respirable, thoracic and inhalable fractions of airborne particulate matter.
format	article
author	Ankica Čavlović Ružica Beljo Lučić Ivan Bešlić Matija Jug Josip Ištvanić
author_facet	Ankica Čavlović Ružica Beljo Lučić Ivan Bešlić Matija Jug Josip Ištvanić
author_sort	Ankica Čavlović
title	Correction factor for real-time determination of wood dust mass concentration by photometric method
title_short	Correction factor for real-time determination of wood dust mass concentration by photometric method
title_full	Correction factor for real-time determination of wood dust mass concentration by photometric method
title_fullStr	Correction factor for real-time determination of wood dust mass concentration by photometric method
title_full_unstemmed	Correction factor for real-time determination of wood dust mass concentration by photometric method
title_sort	correction factor for real-time determination of wood dust mass concentration by photometric method
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2009
url	https://doaj.org/article/2dca2fb39fcc4f1286b56c154956d453
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Correction factor for real-time determination of wood dust mass concentration by photometric method

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