Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (1): add | show Print this page

one publication added to basket [128678]
Bioavailability models for predicting acute and chronic toxicity of zinc to algae, daphnids, and fish in natural surface waters
De Schamphelaere, K.A.C.; Lofts, S.; Janssen, C.R. (2005). Bioavailability models for predicting acute and chronic toxicity of zinc to algae, daphnids, and fish in natural surface waters. Environ. Toxicol. Chem. 24(5): 1190-1197. https://dx.doi.org/10.1897/04-229R.1
In: Environmental Toxicology and Chemistry. Setac Press: New York. ISSN 0730-7268; e-ISSN 1552-8618, more
Peer reviewed article  

Available in  Authors 

Keywords
    Bioavailability
    Chemical elements > Metals > Heavy metals
    Chemical elements > Metals > Heavy metals > Zinc
    Ligands
    Models
    Risk analysis
    Toxicity
    Toxicology > Ecotoxicology
    Water > Surface water
    Water quality
    Algae; Pisces [WoRMS]; Vertebrata [WoRMS]
    Fresh water

Authors  Top 
  • De Schamphelaere, K.A.C., more
  • Lofts, S.
  • Janssen, C.R., more

Abstract
    Bioavailability models predicting acute and/or chronic zinc toxicity to a green alga (Pseudokirchneriella subcapitata), a crustacean (Daphnia magna), and a fish (Oncorhynchus mykiss) were evaluated in a series of experiments with spiked natural surface waters. The eight selected freshwater samples had varying levels of bioavailability modifying parameters: pH (5.7-8.4), dissolved organic carbon (DOC, 2.48-22.9 mg/L), Ca (1.5-80 mg/L), Mg (0.79-18 mg/L), and Na (3.8-120 mg/L). In those waters, chronic zinc toxicity (expressed as 10% effective concentrations [EC10]) varied up to 20-fold for the alga (72-h EC10 from 27.3 to 563 μg Zn/L), and approximately sixfold for the crustacean (21-d EC10 from 59.2 to 387 μg Zn/L), and fivefold for the fish (30-d LC10, lethal concentration for 10% of the organisms, from 185 to 902 μg Zn/L). For P. subcapitata a refined bioavailability model was developed by linking an empirical equation, which predicts toxicity expressed as free Zn2+ activity as a function of pH, to the geochemical speciation model WHAM/Model V. This model and previously developed acute and/or chronic biotic ligand models for D. magna and O. mykiss generally predicted most effect concentrations by an error of less than a factor of two. In waters with pH > 8, however, chronic toxicity to D. magna was underestimated by a factor 3 to 4. Based on the results of this validation exercise and earlier research, we determined applicability ranges for pH (6-8) and Ca (5-160 mg/L) in which all three developed models are valid. Within these ranges, all three models may be considered useful tools for taking into account bioavailability in regulatory assessments of zinc.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors