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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 Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 342, s. 527-535Artikkel i tidsskrift (Fagfellevurdert) 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).

sted, utgiver, år, opplag, sider
2018. Vol. 342, s. 527-535
Emneord [en]
Chromium(VI), Flux-cored wire, Manganese, Nickel, Welding, Alloy steel, Bismuth compounds, Chromium, Chromium compounds, Electric arc welding, Electric welding, Iron compounds, Laser beam welding, Metals, Particle size, Shielding, Silicon compounds, Welding electrodes, Wire, Analytical characterization, Duplex stainless steel, Electroanalytical method, Micron-sized particles, Nano-sized particles, Phosphate-buffered salines, Welding fume particles, Stainless steel, alloy, oxide, phosphate buffered saline, electrode, oxide group, separation, speciation (chemistry), steel, Article, energy dispersive X ray spectroscopy, gas, inhalation, pH, scanning electron microscopy, temperature, welding fume, X ray diffraction, X ray photoelectron spectroscopy
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Identifikatorer
URN: urn:nbn:se:ri:diva-33254DOI: 10.1016/j.jhazmat.2017.08.070Scopus ID: 2-s2.0-85028707249OAI: oai:DiVA.org:ri-33254DiVA, id: diva2:1182183
Merknad

Funding details: 2017-02519, VINNOVA; Funding details: Työ- ja Elinkeinoministeriö; Funding details: 472, Karolinska Institutet; Funding details: Swedish Brain Power; Funding details: Fredrik och Ingrid Thurings Stiftelse; Funding text: David Franklin, Oskar Karlsson, and Fredrik Gustavsson, all at Swerea Kimab, are highly acknowledged for welding, the SEM and TEM analyses. The Swedish Welding Commission and Dr. Bengt Sjögren, Karolinska Institutet, are gratefully acknowledged for valuable discussions. ÅForsk (grant numbers 15–472 and 17–387) and Swedish Governmental Agency for Innovation Systems (Metallic materials, grant number 2017-02519) are highly acknowledged for partially funding this study.

Tilgjengelig fra: 2018-02-12 Laget: 2018-02-12 Sist oppdatert: 2020-05-05bibliografisk kontrollert

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