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Titolo:
Atmospheric corrosion of zinc-based materials: runoff rates, chemical speciation and ecotoxicity effects
Autore:
Wallinder, IO; Leygraf, C; Karlen, C; Heijerick, D; Janssen, CR;
Indirizzi:
Royal Inst Technol, Dept Mat Sci & Engn, Div Corros Sci, SE-10044 Stockholm, Sweden Royal Inst Technol Stockholm Sweden SE-10044 SE-10044 Stockholm, Sweden State Univ Ghent, Lab Environm Toxicol & Aquat Ecol, BE-9000 Ghent, Belgium State Univ Ghent Ghent Belgium BE-9000 quat Ecol, BE-9000 Ghent, Belgium
Titolo Testata:
CORROSION SCIENCE
fascicolo: 5, volume: 43, anno: 2001,
pagine: 809 - 816
SICI:
0010-938X(200105)43:5<809:ACOZMR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Keywords:
zinc; atmospheric corrosion; runoff rate; chemical speciation; bioavailability; ecotoxicity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Wallinder, IO Royal Inst Technol, Dept Mat Sci & Engn, Div Corros Sci, Dr Kristinas V 51, SE-10044 Stockholm, Sweden Royal Inst Technol Dr Kristinas V 51 Stockholm Sweden SE-10044
Citazione:
I.O. Wallinder et al., "Atmospheric corrosion of zinc-based materials: runoff rates, chemical speciation and ecotoxicity effects", CORROS SCI, 43(5), 2001, pp. 809-816

Abstract

In order to fill some major gaps of knowledge for future risk assessments,an interdisciplinary research effort is going on in order to generate relevant zinc runoff rate data from various commercial zinc-based materials, and to explore the relation between the chemical speciation of zinc in runoffwater and its ecotocicity. This study presents runoff rates, based on 1-year exposures of 15 zinc-based materials, which range from 0.07 to 3.5 g/m(2) year. When collected immediately after release from the various zinc-based surfaces, chemical speciation modeling of the runoff water suggests that nearly all zinc (>95%) is present as hydrated Zn2+ ions, the most bioavailable speciation form. Evaluation of zinc runoff for possible environmental effects was performed through growth inhibition test with a green alga, Raphidocelis subcapitata. The results show a high correlation between the amount of zinc in the runoff and the environmental effect, suggesting, again, that all zinc is present as hydrated Zn2+. The insight gained aids in predicting actual ecotoxicity effects during environmental fate of zinc, based on chemical speciation of zinc in the runoff. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 12:05:26