Characterization of fume particles generated during arc welding with various covered electrodes.

Autor: Kirichenko KY; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Agoshkov AI; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Drozd VA; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Gridasov AV; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Kholodov AS; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Kobylyakov SP; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Kosyanov DY; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Zakharenko AM; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation., Karabtsov AA; Far Eastern Geological Institute, FEB RAS, pr-t 100-let Vladivostoku, 159, Vladivostok, 690022, Russian Federation., Shimanskii SR; Saint-Petersburg State University of Architecture and Civil Engineering, 2-ya Krasnoarmeiskaya Street, 4, Saint-Petersburg, 190005, Russian Federation., Stratidakis AK; Laboratory of Toxicology, School of Medicine, University of Crete, Heraklion, 71003, Greece., Mezhuev YO; Dmitry Mendeleev University of Chemical Technology of Russia, Miusskayasquare, 9, Moscow, 125047, Russian Federation., Tsatsakis AM; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation. aris@med.uoc.gr.; Laboratory of Toxicology, School of Medicine, University of Crete, Heraklion, 71003, Greece. aris@med.uoc.gr., Golokhvast KS; Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, 690950, Russian Federation.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2018 Nov 21; Vol. 8 (1), pp. 17169. Date of Electronic Publication: 2018 Nov 21.
DOI: 10.1038/s41598-018-35494-1
Abstrakt: Arc welding operations are considered to be risky procedures by generating hazardous welding fume for human health. This study focuses on the key characteristics, as well as dispersion models, of welding fumes within a work zone. Commercial and widely used types of electrodes with various types of covering (rutile, basic, acidic and rutile-cellulose) were used in a series of experiments on arc welding operations, under 100 and 150 amps of electric current. According to the results of this study, maximum levels of pollution with particles of PM 10 fraction occur in the workspace during arc welding operations. Disregarding the types of electrodes used, the 3D models of dispersion of the РМ 10 particles at the floor plane exhibit corrugated morphologies while also demonstrate high concentrations of the РМ 10 particles at distances 0-3 m and 4-5 m from the emission source. The morphology of these particles is represented by solid and hollow spheres, 'nucleus-shell' structures, perforated spheres, sharp-edged plates, agglomerates of the tree-like (coral) shape. At last the bifractional mechanism of fume particle formation for this type of electrodes is also shown and described. In this article results are reported, which demonstrate the hazards of the arc welding process for human health. The results of the characterization of WFs reported improve our understanding of risks that these operations pose to human health and may strengthen the need for their control and mitigation.
Databáze: MEDLINE
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