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Size-separated particle fractions of stainless steel welding fume particles – A multi-analytical characterization focusing on surface oxide speciation and release of hexavalent chromium
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
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2018 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 342, p. 527-535Article in journal (Refereed) Published
Abstract [en]

Welding fume of stainless steels is potentially health hazardous. The aim of this study was to investigate the manganese (Mn) and chromium (Cr) speciation of welding fume particles and their extent of metal release relevant for an inhalation scenario, as a function of particle size, welding method (manual metal arc welding, metal arc welding using an active shielding gas), different electrodes (solid wires and flux-cored wires) and shielding gases, and base alloy (austenitic AISI 304L and duplex stainless steel LDX2101). Metal release investigations were performed in phosphate buffered saline (PBS), pH 7.3, 37°, 24 h. The particles were characterized by means of microscopic, spectroscopic, and electroanalytical methods. Cr was predominantly released from particles of the welding fume when exposed in PBS [3–96% of the total amount of Cr, of which up to 70% as Cr(VI)], followed by Mn, nickel, and iron. Duplex stainless steel welded with a flux-cored wire generated a welding fume that released most Cr(VI). Nano-sized particles released a significantly higher amount of nickel compared with micron-sized particle fractions. The welding fume did not contain any solitary known chromate compounds, but multi-elemental highly oxidized oxide(s) (iron, Cr, and Mn, possibly bismuth and silicon). 

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 342, p. 527-535
Keywords [en]
Chromium(VI), Flux-cored wire, Manganese, Nickel, Welding
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-216800DOI: 10.1016/j.jhazmat.2017.08.070ISI: 000414880800057PubMedID: 28886565Scopus ID: 2-s2.0-85028707249OAI: oai:DiVA.org:kth-216800DiVA, id: diva2:1156881
Funder
VINNOVA, 2017-02519
Note

QC 20171205

Available from: 2017-11-14 Created: 2017-11-14 Last updated: 2017-12-05Bibliographically approved

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Mei, NanxuanOdnevall Wallinder, IngerHedberg, Yolanda

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Mei, NanxuanBelleville, L.Cha, YingyingOlofsson, UlfOdnevall Wallinder, IngerHedberg, Yolanda
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Surface and Corrosion ScienceMachine Design (Dept.)
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Journal of Hazardous Materials
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