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Welding fume nanoparticles from solid and flux-cored wires: Solubility, toxicity, and role of fluorides
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science. Univ Western Ontario, Dept Chem, London, ON N6A 3K7, Canada.;Univ Western Ontario, Surface Sci Western, London, ON N6G 0J3, Canada..ORCID iD: 0000-0003-2145-3650
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.ORCID iD: 0000-0002-6042-9752
Karolinska Inst, Inst Environm Med, S-17177 Stockholm, Sweden..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science. Natl Univ Sci & Technol MISIS, Ctr Funct Nanoceram, Moscow 119049, Russia.;Natl Acad Sci Belarus, Inst Gen & Inorgan Chem, Minsk 220072, BELARUS..ORCID iD: 0000-0003-1741-0316
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2021 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 413, article id 125273Article in journal (Refereed) Published
Abstract [en]

Welding fume particles are hazardous. Their toxicity likely depends on their composition and reactivity. This study aimed at exploring the role of sodium or other fluorides (NaF), which are intentionally added to flux-cored wire electrodes for stainless steel welding, on the solubility (in phosphate buffered saline) and toxicity of the generated welding fume particles. A multi-analytical particle characterization approach along with in-vitro cell assays was undertaken. The release of Cr(VI) and Mn from the particles was tested as a function of fluoride solution concentration. The welding fume particles containing NaF released significantly higher amounts of Cr (VI) compared with solid wire reference fumes, which was associated with increased cytotoxicity and genotoxicity in-vitro. No crystalline Na or potassium (K) containing chromates were observed. Cr(VI) was incorporated in an amorphous mixed oxide. Solution-added fluorides did not increase the solubility of Cr(VI), but contributed to a reduced Mn release from both solid and flux-cored wire fume particles and the reduction of Cr (VI) release from solid wire fume particles. Chemical speciation modeling suggested that metal fluoride complexes were not formed. The presence of NaF in the welding electrodes did not have any direct, but possibly an indirect, role in the Cr(VI) solubility of welding fumes.

Place, publisher, year, edition, pages
Elsevier BV , 2021. Vol. 413, article id 125273
Keywords [en]
Metal release, Solubility, XRD, XPS, Cyclic voltammetry, FTIR, TEM, Cytotoxicity, Genotoxicity, Welding
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:kth:diva-296367DOI: 10.1016/j.jhazmat.2021.125273ISI: 000647428400004PubMedID: 33581669Scopus ID: 2-s2.0-85100654325OAI: oai:DiVA.org:kth-296367DiVA, id: diva2:1574199
Note

QC 20210628

Available from: 2021-06-28 Created: 2021-06-28 Last updated: 2023-01-02Bibliographically approved

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Hedberg, YolandaWei, ZhengRomanovski, ValentinTheodore, JulietteOdnevall Wallinder, Inger

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