Document of bibliographic reference 128832

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Bioavailability of zinc in runoff water from roofing materials

Abstract

Corrosion and runoff from zinc-coated materials and outdoor structures is an important source for the dispersion of zinc in the environment. Being part of a large inter-disciplinary research project, this study presents the bioavailability of zinc in runoff water immediately after release from the surface of 15 different commercially available zinc-based materials exposed to the urban environment of Stockholm, Sweden. Runoff water was analysed chemically and evaluated for its possible environmental impact, using both a biosensor test with the bacteria Alcaligenes eutrophus (Biomet) and the conventional 72 h growth inhibition test with the green alga Raphidocelis subcapitata. Chemical speciation modelling revealed that most zinc (94.3-99.9%) was present as the free Zn ion, the most bioavailable speciation form. These findings were confirmed by the results of the biosensor test (Biomet) which indicated that all zinc was indeed bioavailable. Analysis of the ecotoxicity data also suggested that the observed toxic effects were due to the presence of Zn²⁺ ions. Finally, regression analysis showed that, for this type of runoff samples, the rapid screening biosensor was capable of predicting (a) the total amount of zinc present in the runoff samples (R² of 0.93-0.98; p < 0.05) and (b) the observed 72 h-EbC50s (R² of 0.69-0.97; p < 0.05).

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000176368400006

Bibliographic citation

Heijerick, D.G.; Janssen, C.R.; Karlen, C.; Wallinder, IO.; Leygraf, C. (2002). Bioavailability of zinc in runoff water from roofing materials. Chemosphere 47(10): 1073-1080

Topic

Fresh water

Is peer reviewed

true