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Chang, T., Leygraf, C., Herting, G., Fan, Y., Babu, P., Malkoch, M., . . . Odnevall, I. (2024). Effect of blue light illumination on atmospheric corrosion and bacterial adhesion on copper. Corrosion Science, 230, Article ID 111909.
Open this publication in new window or tab >>Effect of blue light illumination on atmospheric corrosion and bacterial adhesion on copper
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2024 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 230, article id 111909Article in journal (Refereed) Published
Abstract [en]

The effect of blue light on atmospheric corrosion of Cu and on the antimicrobial properties was explored upon exposure mimicking the condition of hygienic surface disinfection. The results show that blue light illumination enhanced the formation of Cu2O, resulting in a slightly increased corrosion resistance of Cu without pre-deposited NaCl, whereas the enhanced formation of Cu2O, CuCl and/or Cu(OH)3Cl on copper with pre-deposited NaCl caused concomitant corrosion product flaking and a reduced corrosion resistance. The blue light induced enhancement of Cu corrosion led to increased surface roughness and more pronounced integration of bacteria within the corrosion products.

Place, publisher, year, edition, pages
Elsevier BV, 2024
Keywords
Atmospheric corrosion, Bacteria (E. coli), Blue light, Chloride, Copper
National Category
Corrosion Engineering
Identifiers
urn:nbn:se:kth:diva-343995 (URN)10.1016/j.corsci.2024.111909 (DOI)2-s2.0-85185492077 (Scopus ID)
Note

QC 20240229

Available from: 2024-02-28 Created: 2024-02-28 Last updated: 2024-02-29Bibliographically approved
Odnevall, I., Brookman-Amissah, M., Stabile, F., Ekvall, M. T., Herting, G., Vargas, M. B., . . . Rissler, J. (2023). Characterization and Toxic Potency of Airborne Particles Formed upon Waste from Electrical and Electronic Equipment Waste Recycling: A Case Study. ACS ENVIRONMENTAL AU, 3(6), 370-382
Open this publication in new window or tab >>Characterization and Toxic Potency of Airborne Particles Formed upon Waste from Electrical and Electronic Equipment Waste Recycling: A Case Study
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2023 (English)In: ACS ENVIRONMENTAL AU, ISSN 2694-2518, Vol. 3, no 6, p. 370-382Article in journal (Refereed) Published
Abstract [en]

Manual dismantling, shredding, and mechanical grinding of waste from electrical and electronic equipment (WEEE) at recycling facilities inevitably lead to the accidental formation and release of both coarse and fine particle aerosols, primarily into the ambient air. Since diffuse emissions to air of such WEEE particles are not regulated, their dispersion from the recycling plants into the adjacent environment is possible. The aim of this interdisciplinary project was to collect and characterize airborne WEEE particles smaller than 1 mu m generated at a Nordic open waste recycling facility from a particle concentration, shape, and bulk and surface composition perspective. Since dispersed airborne particles eventually may reach rivers, lakes, and possibly oceans, the aim was also to assess whether such particles may pose any adverse effects on aquatic organisms. The results show that WEEE particles only exerted a weak tendency toward cytotoxic effects on fish gill cell lines, although the exposure resulted in ROS formation that may induce adverse effects. On the contrary, the WEEE particles were toxic toward the crustacean zooplankter Daphnia magna, showing strong effects on survival of the animals in a concentration-dependent way.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023
Keywords
electronic waste, WEEE, aerosols, environmental dispersion, characterization, ecotoxicity
National Category
Other Chemistry Topics
Identifiers
urn:nbn:se:kth:diva-340670 (URN)10.1021/acsenvironau.3c00034 (DOI)001105820700001 ()38028743 (PubMedID)2-s2.0-85178365949 (Scopus ID)
Note

QC 20231211

Available from: 2023-12-11 Created: 2023-12-11 Last updated: 2023-12-11Bibliographically approved
Ragnvaldsson, D., Herting, G., Jönsson, A. & Odnevall, I. (2022). Applying Generic Water Quality Criteria to Cu and Zn in a Dynamic Aquatic Environment-The Case of the Brackish Water Formation Strommen-Saltsjon. Water, 14(6), Article ID 847.
Open this publication in new window or tab >>Applying Generic Water Quality Criteria to Cu and Zn in a Dynamic Aquatic Environment-The Case of the Brackish Water Formation Strommen-Saltsjon
2022 (English)In: Water, E-ISSN 2073-4441, Vol. 14, no 6, article id 847Article in journal (Refereed) Published
Abstract [en]

The EU Water Framework Directive stipulates that all EU waterways shall have good chemical and ecological status by 2027. Methodologies are described for how to assess and classify waterbodies and make 7-year management plans. Aquatic risk assessment methodologies and environmental quality standards are defined and a biotic ligand model methodology is available to assess the influence of water chemistry on the ability of aquatic organisms to take up metals. Aquatic status classification practices of naturally occurring river basin-specific metals are discussed, specifically how Cu and Zn water quality criteria guideline values have been adopted and defined for Swedish coastal and estuarine waters and how well they represent possible ecological risks. Calculations of bioavailability and ecotoxicity are conducted using recognised models for the Strommen-Saltsjon water body in Stockholm, in which naturally occurring metals, especially Cu, have among the highest background concentrations of Sweden. Proposals are made to improve risk assessment methodologies to better reflect the vitality of living organisms, and to what extent current levels of these metals in Swedish waterways may influence their welfare. The study concludes that a more local assessment including, e.g., studies of the benthic fauna would be relevant for ecological status classification.

Place, publisher, year, edition, pages
MDPI AG, 2022
Keywords
water quality criteria guideline values, status classification, brackish water, copper, zinc
National Category
Environmental Sciences
Identifiers
urn:nbn:se:kth:diva-310778 (URN)10.3390/w14060847 (DOI)000774510000001 ()2-s2.0-85126345141 (Scopus ID)
Note

QC 20220530

Available from: 2022-04-07 Created: 2022-04-07 Last updated: 2023-08-28Bibliographically approved
Zhang, S.-T. -., Maltseva, A., Herting, G., Guillemoles, J.-F. -., Schneider, N., Odnevall, I. & Volovitch, P. (2022). Importance of atmospheric aerosol pollutants on the degradation of Al2O3 encapsulated Al-doped zinc oxide window layers in solar cells. Progress in Photovoltaics, 30(5), 552-566
Open this publication in new window or tab >>Importance of atmospheric aerosol pollutants on the degradation of Al2O3 encapsulated Al-doped zinc oxide window layers in solar cells
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2022 (English)In: Progress in Photovoltaics, ISSN 1062-7995, E-ISSN 1099-159X, Vol. 30, no 5, p. 552-566Article in journal (Refereed) Published
Abstract [en]

Atmospheric aerosol pollutants are considered for the first time for the durability evaluation of non-metallic photovoltaic materials on the example of pristine and Al2O3-encapsulated Al-doped zinc oxide (AZO) window layers. The AZO samples were exposed to a varied temperature and humidity cycle, completed or not by a daily deposition of (NH4)2SO4 or NaCl aerosols, typical pollutants in rural and marine environments, respectively. The samples exposed with and without the pollutants were compared after 1 and 2 weeks of the test. Optical transmittance and conductivity significantly degraded only for the samples exposed with the pollutants. Raman spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy evidenced localized dissolution of the AZO film and chemical modification of the Al2O3 encapsulation. The most severe degradation was caused by (NH4)2SO4, which was attributed to the high stability of soluble [Zn (NH3)42+] complexes. The Al2O3 encapsulation improved chemical and physical stability of AZO in the presence of (NH4)2SO4 but not in the presence of NaCl. The latter can be explained by pitting corrosion of Al2O3. Optical transmission curves are coherent with the AZO layer thinning in the presence of NaCl and very localized AZO dissolution (most likely grain boundary etching) in the presence of (NH4)2SO4. The enhanced degradation of encapsulated AZO in the presence of atmospheric aerosol pollutants suggests that they cannot be neglected in the evaluation of barrier protection capacities of novel encapsulates and, more generally, in the outdoor durability assessment of novel photovoltaic materials and devices. 

Place, publisher, year, edition, pages
Wiley, 2022
Keywords
Al:ZnO transparent conductive oxide, Al2O3-encapsulation, atmospheric pollutants, flexible photovoltaics, outdoor durability, Alumina, Aluminum oxide, Atmospheric chemistry, Atmospheric corrosion, Atmospheric humidity, Atmospheric thermodynamics, Chemical modification, Chemical stability, Dissolution, Etching, Grain boundaries, II-VI semiconductors, Light transmission, Seawater corrosion, Sodium chloride, X ray photoelectron spectroscopy, Zinc oxide, Aerosol pollutants, Al-doped zinc oxide, Durability evaluation, Localised, Non-metallic, Oxide samples, Photovoltaic materials, Photovoltaics, Research and application, Window layer, Atmospheric aerosols
National Category
Human Geography Radiology, Nuclear Medicine and Medical Imaging Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-317505 (URN)10.1002/pip.3527 (DOI)000734618500001 ()2-s2.0-85121716308 (Scopus ID)
Note

QC 20220919

Available from: 2022-09-19 Created: 2022-09-19 Last updated: 2022-09-19Bibliographically approved
Herting, G., Saarimaa, V., Heydari, G., Kaleva, A., Sundell, P. & Odnevall Wallinder, I. (2022). Simulated rain exposures can mimic long‐term metal runoff at atmospheric conditions—A case study on naturally and prepatinated zinc sheet. Materials and corrosion - Werkstoffe und Korrosion
Open this publication in new window or tab >>Simulated rain exposures can mimic long‐term metal runoff at atmospheric conditions—A case study on naturally and prepatinated zinc sheet
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2022 (English)In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Wiley, 2022
National Category
Corrosion Engineering Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-313021 (URN)10.1002/maco.202213052 (DOI)000767634900001 ()2-s2.0-85126054084 (Scopus ID)
Note

QC 20220530

Available from: 2022-05-30 Created: 2022-05-30 Last updated: 2022-09-23Bibliographically approved
Blomberg, E., Herting, G., Kuttuva Rajarao, G., Mehtiö, T., Uusinoka, M., Ahonen, M., . . . Odnevall, I. (2022). Weathering and Antimicrobial Properties of Laminate and Powder Coatings Containing Silver Phosphate Glass Used as High-Touch Surfaces. Sustainability, 14(12), 7102
Open this publication in new window or tab >>Weathering and Antimicrobial Properties of Laminate and Powder Coatings Containing Silver Phosphate Glass Used as High-Touch Surfaces
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2022 (English)In: Sustainability, E-ISSN 2071-1050, Vol. 14, no 12, p. 7102-Article in journal (Refereed) Published
Abstract [en]

Increasing the use of hygienic high-touch surfaces with antimicrobial properties in health care and public spaces is one way to hinder the spread of bacteria and infections. This study investigates the antimicrobial efficacy and surface reactivity of commercial laminate and powder coated surfaces treated with silver-doped phosphate glass as antimicrobial additive towards two model bacterial strains, Escherichia coli and Bacillus subtilis, in relation to surface weathering and repeated cleaning. High-touch conditions in indoor environments were simulated by different extents of pre-weathering (repeated daily cycles in relative humidity at constant temperature) and simplified fingerprint contact by depositing small droplets of artificial sweat. The results elucidate that the antimicrobial efficacy was highly bacteria dependent (Gram-positive or Gram-negative), not hampered by differences in surface weathering but influenced by the amount of silver-doped additive. No detectable amounts of silver were observed at the top surfaces, though silver was released into artificial sweat in concentrations a thousand times lower than regulatory threshold values stipulated for materials and polymers in food contact. Surface cleaning with an oxidizing chemical agent was more efficient in killing bacteria compared with an agent composed of biologically degradable constituents. Cleaning with the oxidizing agent resulted further in increased wettability and presence of residues on the surfaces, effects that were beneficial from an antimicrobial efficacy perspective.

Place, publisher, year, edition, pages
MDPI AG, 2022
National Category
Materials Engineering Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
urn:nbn:se:kth:diva-313868 (URN)10.3390/su14127102 (DOI)000816778900001 ()2-s2.0-85132766292 (Scopus ID)
Note

QC 20230328

Available from: 2022-06-13 Created: 2022-06-13 Last updated: 2023-03-28Bibliographically approved
Chang, T., Sepati, M., Herting, G., Leygraf, C., Rajarao, G. K., Butina, K., . . . Odnevall Wallinder, I. (2021). A novel methodology to study antimicrobial properties of high-touch surfaces used for indoor hygiene applications-A study on Cu metal. PLOS ONE, 16(2), Article ID e0247081.
Open this publication in new window or tab >>A novel methodology to study antimicrobial properties of high-touch surfaces used for indoor hygiene applications-A study on Cu metal
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2021 (English)In: PLOS ONE, E-ISSN 1932-6203, Vol. 16, no 2, article id e0247081Article in journal (Refereed) Published
Abstract [en]

Metal-based high-touch surfaces used for indoor applications such as doorknobs, light switches, handles and desks need to remain their antimicrobial properties even when tarnished or degraded. A novel laboratory methodology of relevance for indoor atmospheric conditions and fingerprint contact has therefore been elaborated for combined studies of both tarnishing/corrosion and antimicrobial properties of such high-touch surfaces. Cu metal was used as a benchmark material. The protocol includes pre-tarnishing/corrosion of the high touch surface for different time periods in a climatic chamber at repeated dry/wet conditions and artificial sweat deposition followed by the introduction of bacteria onto the surfaces via artificial sweat droplets. This methodology provides a more realistic and reproducible approach compared with other reported procedures to determine the antimicrobial efficiency of high-touch surfaces. It provides further a possibility to link the antimicrobial characteristics to physical and chemical properties such as surface composition, chemical reactivity, tarnishing/corrosion, surface roughness and surface wettability. The results elucidate that bacteria interactions as well as differences in extent of tarnishing can alter the physical properties (e.g. surface wettability, surface roughness) as well as the extent of metal release. The results clearly elucidate the importance to consider changes in chemical and physical properties of indoor hygiene surfaces when assessing their antimicrobial properties.

Place, publisher, year, edition, pages
Public Library of Science (PLoS), 2021
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-293006 (URN)10.1371/journal.pone.0247081 (DOI)000624536800106 ()33630868 (PubMedID)2-s2.0-85102097367 (Scopus ID)
Note

QC 20210420

Available from: 2021-04-20 Created: 2021-04-20 Last updated: 2022-06-25Bibliographically approved
Chang, T., Butina, K., Herting, G., Rajarao, G. K., Richter-Dahlfors, A., Blomberg, E., . . . Leygraf, C. (2021). The interplay between atmospheric corrosion and antimicrobial efficiency of Cu and Cu5Zn5Al1Sn during simulated high-touch conditions. Corrosion Science, 185, Article ID 109433.
Open this publication in new window or tab >>The interplay between atmospheric corrosion and antimicrobial efficiency of Cu and Cu5Zn5Al1Sn during simulated high-touch conditions
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2021 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 185, article id 109433Article in journal (Refereed) Published
Abstract [en]

The interplay between atmospheric corrosion and antimicrobial efficiency of bare Cu and Cu5Zn5Al1Sn was studied upon exposures simulating high-touch surface conditions. The survival of the bacteria Bacillus subtilis during surface contact with Cu and Cu5Zn5Al1Sn was examined under different degrees of surface oxidation, tarnishing, wettability and copper ion release. Depending on surface conditions complete bacteria inhibition was obtained within 4 min on Cu and within 6-10 min on Cu5Zn5Al1Sn. The antibacterial efficiency increases slightly with copper release rate and is governed by complex interactions between the corroded metal surface, bacteria and extracellular polymeric substances produced by the bacteria.

Place, publisher, year, edition, pages
Elsevier BV, 2021
Keywords
Copper, Cyclic voltammetry, EIS, IR microscopy, Bacteria, Atmospheric corrosion
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-295832 (URN)10.1016/j.corsci.2021.109433 (DOI)000647580800004 ()2-s2.0-85103591533 (Scopus ID)
Note

QC 20210603

Available from: 2021-06-03 Created: 2021-06-03 Last updated: 2024-03-18Bibliographically approved
Hedberg, Y., Gamna, F., Padoan, G., Ferraris, S., Cazzola, M., Herting, G., . . . Odnevall Wallinder, I. (2020). Surface modified Ti6Al4V for enhanced bone bonding ability - Effects of silver and corrosivity at simulated physiological conditions from a corrosion and metal release perspective. Corrosion Science, 168, Article ID 108566.
Open this publication in new window or tab >>Surface modified Ti6Al4V for enhanced bone bonding ability - Effects of silver and corrosivity at simulated physiological conditions from a corrosion and metal release perspective
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2020 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 168, article id 108566Article in journal (Refereed) Published
Abstract [en]

Different surface treatments, with and without silver (Ag), of a Ti6Al4V alloy for increased bone bonding ability were investigated and compared with non-treated surfaces. Studies were conducted at 37 degrees C in phosphate buffered saline (PBS, pH 7.4) of varying hydrogen peroxide (H2O2) and bovine serum albumin (BSA) concentrations. Increased levels of metal release and corrosion were observed in the presence of both H2O2 and BSA due to complexation with Ti and Al in the surface oxide, respectively. Ag release was enhanced by the presence of BSA. Galvanic effects by Ag were minor, but possibly observed in the most corrosive environment.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
Alloy, Titanium, Silver, XPS, Polarization
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-272920 (URN)10.1016/j.corsci.2020.108566 (DOI)000525871400017 ()2-s2.0-85081286750 (Scopus ID)
Note

QC 20200527

Available from: 2020-05-27 Created: 2020-05-27 Last updated: 2022-06-26Bibliographically approved
Wang, X., Herting, G., Wei, Z., Odnevall Wallinder, I. & Hedberg, Y. (2019). Bioaccessibility of nickel and cobalt in powders and massive forms of stainless steel, nickel- or cobalt-based alloys, and nickel and cobalt metals in artificial sweat. Regulatory toxicology and pharmacology, 106, 15-26
Open this publication in new window or tab >>Bioaccessibility of nickel and cobalt in powders and massive forms of stainless steel, nickel- or cobalt-based alloys, and nickel and cobalt metals in artificial sweat
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2019 (English)In: Regulatory toxicology and pharmacology, ISSN 0273-2300, E-ISSN 1096-0295, Vol. 106, p. 15-26Article in journal (Refereed) Published
Abstract [en]

Nickel (Ni)and cobalt (Co)are the most common metal allergens upon skin contact at occupational settings and during consumer handling of metals and alloys. A standardized test (EN, 1811)exists to assess Ni release from articles of metals and alloys in massive forms intended for direct and prolonged skin contact, but no corresponding test exists for other materials such as powders or massive forms of alloys placed on the market or to determine the release of Co, for which only limited data is available. Differences in Ni and Co release from massive forms of a range of common stainless steels and some high-alloyed grades compared to Ni and Co metals were therefore assessed in artificial sweat for 1 week at 30 °C according to EN 1811. A comparable modified test procedure was elaborated and used for powders and some selected massive alloys. All alloys investigated released significantly less amount of Ni (100–5000-fold)and Co (200–400,000-fold)compared with Ni and Co metal, respectively. Almost all alloys showed a lower bioaccessible concentration (0.007–6.8 wt% Ni and 0.00003–0.6 wt% Co)when compared to corresponding bulk alloy contents (0.1–53 wt% Ni, 0.02–65 wt% Co). Observed differences are, among other factors, related to differences in bulk composition and to surface oxide characteristics. For the powders, less Ni and Co were released per surface area, but more per mass, compared to the corresponding massive forms. 

Place, publisher, year, edition, pages
Academic Press Inc., 2019
Keywords
Artificial sweat, Classification, Corrosion, EN 1811, Metal release, Particles, Regulation, Skin sensitizer, alloy, cobalt, dermatological agent, nickel, oxide, stainless steel, unclassified drug, Article, calibration, chemical composition, concentration (parameter), particle size, pH, powder, priority journal, surface area, surface property
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-252512 (URN)10.1016/j.yrtph.2019.04.017 (DOI)000513219700003 ()31028796 (PubMedID)2-s2.0-85064756776 (Scopus ID)
Note

QC 20190710

Available from: 2019-07-10 Created: 2019-07-10 Last updated: 2024-01-10Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2123-2201

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