title: In vitro studies of copper release from powder particles in synthetic biological media.
abstract: The aim of this paper is to provide quantitative data on copper release from powder particles of different copper materials, including artificial copper patina, Cu(2)O and metallic Cu, when exposed to different synthetic biological media to simulate an inhalation scenario and/or skin contact. Generated data may contribute in risk assessment of potential health effects following exposure to and handling of various copper materials. All tests were performed in vitro to determine total copper concentrations, release rates of total copper, and to elucidate its time-dependence. The copper release process was interpreted in terms of specific surface area, surface morphology-, and composition. All powder materials show a time-dependent release process with total copper release rates less than 3 microg/cm(2) per hour at steady state conditions, for all media investigated. The importance of using relevant test media when simulating different interstitial lung conditions and difficulties encountered when comparing powder particles of essentially different properties are thoroughly discussed.
authors.affiliation: Division of Corrosion Science, Department of Materials Science and Engineering, School of Industrial Engineering and Management, Royal Institute of Technology, 100 44 Stockholm, Sweden. klarami@kth.se
authors.forename: Klara
authors.initials: K
authors.lastname: Midander
authors.forename: Inger Odnevall
authors.initials: IO
authors.lastname: Wallinder
authors.forename: Christofer
authors.initials: C
authors.lastname: Leygraf
mesh_terms: D000393:Air Pollutants / Q000378:metabolism*; D001826:Body Fluids / Q000378:metabolism*; D003300:Copper / Q000493:pharmacokinetics*; D004781:Environmental Exposure / Q000009:adverse effects; D006801:Humans; D008168:Lung / Q000378:metabolism*; D017563:Lung Diseases, Interstitial / Q000378:metabolism; D008855:Microscopy, Electron, Scanning / Q000379:methods; D008954:Models, Biological; D010316:Particle Size; D011208:Powders; D012867:Skin / Q000378:metabolism*; D012965:Sodium Chloride / Q000378:metabolism; D013499:Surface Properties
chemical_list: D000393:Air Pollutants; D011208:Powders; D012965:Sodium Chloride; D003300:Copper