Dagobert G. Heijerick

TL;DR: A species sensitivity distribution was constructed using no observed effect concentrations (NOECs) for reproductive effects from 39 papers in 26 species, resulting in a median hazardous concentration at which 5% of the species tested are affected (HC5,50) of 0.35 ng/L, which is recommended as the PNEC for EE2 in surface water.

TL;DR: From these data, conditional stability constants for Ca2+), Mg2+, Na+, and Zn2+ were derived and incorporated into a biotic ligand model (BLM) predicting acute zinc toxicity to D. magna in surface waters with different water quality characteristics.

TL;DR: With the refined BLM, 48-h EC(50) values could be accurately predicted within a factor of two not only in all 25 reconstituted media, but also in 19 natural waters and could support efforts to improve the ecological relevance of risk assessment procedures applied at present.

TL;DR: The combined effects of six metals on the European estuarine mysid Neomysis integer were examined and the additive effect of these metals in the marine/estuarine environment was confirmed.

TL;DR: A copper toxicity model was developed by linking these equations to the WHAM V geochemical speciation model and predicted 97% of the EbC50dissolving and EbC10dissolved values within a factor of two of the observed values.