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Arhiv Za Higijenu Rada I Toksikologiju | 2013

Side-by-side determination of workers' exposure to wood dust with IOM and open-faced samplers.

Anka Ozana Čavlović; Ružica Beljo Lučić; Matija Jug; Kristijan Radmanović; Ivan Bešlić

Abstract Woodworkers’ exposure to airborne particles is measured with different sampling techniques throughout the world. Due to a great number of exposure data obtained with different samplers, European countries have aimed over the last ten years to find a conversion factor for mass concentrations that would render these measurements comparable. Following the accepted EU standards and regulations, we replaced a 25 mm open-faced (OF) filter holder with an IOM head to determine woodworkers’ exposure to inhalable dust and establish an IOM/OF sampler ratio that might serve as a reliable factor for converting the existing OF data to IOM dust mass concentration in the industrial environment. For this side-by-side sampling we used personal 25 mm OF (N=29) and IOM (N=29) sampling heads over eight working hours. The obtained IOM/OF ratios ranged between 0.7 and 2.3. However, mass concentrations obtained by IOM and OF samplers did not significantly differ. Our findings suggest that there is no need for conversion of the existing OF data for workers exposed to wood dust, provided that dust mass concentrations in the working environment range between 1 mg m-3 and 7 mg m-3. Future side-by-side measurements should also involve environments with low wood dust mass concentrations. Sažetak USPOREDNO ODREĐIVANJE IZLOŽENOSTI RADNIKA DRVNOJ PRAŠINI UPORABOM “IOM” I “OPEN FACE” SAKUPLJAČA U svrhu određivanja izloženosti radnika drvnoj prašini na radnome mjestu, diljem svijeta korišteni su različiti mjerni uređaji koji se razlikuju izvedbom držača filtra i učinkovitošću prikupljanja inhalabilne frakcije lebdećih čestica. U proteklih deset godina cilj je istraživanja u europskim zemljama odrediti konverzijski faktor za masene koncentracije dobivene različitim sakupljačima. Prema prihvaćenim europskim standardima i propisima, 25 mm Open Face (OF) sakupljač zamijenjen je IOM sakupljačem u uređaju za određivanje izloženosti radnika inhalabilnoj prašini. Cilj ovog istraživanja bio je utvrditi IOM/ OF omjer za ta dva tipa sakupljača u industrijskim uvjetima za dobivanje faktora konverzije iz postojećih OF masenih koncentracija u IOM masene koncentracije. Usporedno uzorkovanje provedeno je tijekom osam radnih sati osobnom metodom sakupljanja koristeći se 25 mm Open Face (N=29) i IOM (N=29) držačima filtra. Dobiveni IOM/OF omjer raspona iznosio je 0,7 do 2,3. Masene koncentracije dobivene IOM i OF sakupljačima statistički se značajno ne razlikuju, iz čega proizlazi da nema potrebe pretvarati postojeće OF masene koncentracije u IOM koncentracije. Dobivena postavka vrijedi samo za radni okoliš s višom masenom koncentracijom, otprilike između 1 mg m-3 i 7 mg m-3. Usporedno određivanje izloženosti radnika inhalabilnoj frakciji lebdećih čestica treba provesti i u radnim uvjetima s niskom masenom koncentracijom drvne prašine.


Drvna Industrija | 2008

Biological Durability of Wood modified by Citric Acid

Radovan Despot; Marin Hasan; Matija Jug; Bogoslav Šefc


Croatian Journal of Forest Engineering | 2009

Analysis of Factors Affecting Log Band Saw Capacity

Josip Ištvanić; Ružica Beljo Lučić; Matija Jug; Rajka Karan


Drvna Industrija | 2016

Čimbenici koji utječu na rastresitost usitnjenog materijala nastalog blanjanjem drva

Matija Jug; Ružica Beljo Lučić; Anka Ozana Čavlović


International Science Conference : Woodworking techniques (4 ; 2011) | 2011

Definitions and relation of airborne wood dust fractions

Ružica Beljo Lučić; Anka Ozana Čavlović; Matija Jug


Sumarski List | 2018

Doprinos istraživanju svojstava peleta od drva turopoljskog kraja

Branimir Šafran; Matija Jug; Kristijan Radmanović; Marijan Hasan; Kristijan Augustinović; Krešimir Vučković; Stjepan Risović


Implementation of wood science in woodworking sector | 2018

Metoda provjere učinkovitosti rada sustava ekshaucije u drvnoj industriji

Anka Ozana Čavlović; Matija Jug; Andrija Novosel


Bioresources | 2018

Longitudinal and Tangential Coefficients of Chip Compression in Orthogonal Wood Cutting

Kristijan Radmanović; Igor Đukić; Miran Merhar; Branimir Šafran; Matija Jug; Ružica Beljo Lučić


International Wood Machining Seminar | 2017

Chip Plastic Deformation in Orthogonal Wood Cutting

Kristijan Radmanović; Igor Đukić; Miran Merhar; Branimir Šafran; Matija Jug; Ružica Beljo Lučić


International Wood Machining Seminar | 2017

Effect of Feed Speed on Bluntness and Warming of Circular Saw in Sawing Beech and Oak Wood

Matija Jug; Ružica Beljo Lučić; Anka Ozana Čavlović; Branimir Šafran

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