Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.chemosphere.2016.03.006
Titel (primär) Mixture toxicity of water contaminants-effect analysis using the zebrafish embryo assay (Danio rerio)
Autor Schmidt, S.; Busch, W. ORCID logo ; Altenburger, R.; Küster, E. ORCID logo
Quelle Chemosphere
Erscheinungsjahr 2016
Department BIOTOX
Band/Volume 152
Seite von 503
Seite bis 512
Sprache englisch
Keywords Baseline toxicity; DNA damage; FET; Micro pollutant
UFZ Querschnittsthemen RU3;
Abstract Three water contaminants were selected to be tested in the zebrafish embryo toxicity test (DarT) in order to investigate the sensitivity of the zebrafish embryo toxicity test with respect to mixture effect detection. The concentration-response curves for the observed effects lethality and hypo-pigmentation were calculated after an exposure of the embryos for 96 h with a fungicide (carbendazim), a plasticizer or propellent precursor (2,4-DNT: 2,4- dinitrotoluene) and an aromatic compound (AαC: 2-amino-9H-pyrido[2,3-b]indol), respectively. Follow-up mixture tests were based on the calculated LC50 or EC50 of the single compounds and combined effects were predicted according to the mixture concepts of concentration addition (CA) and independent action (IA). The order of toxicity for the single substances was carbendazim (LC50 = 1.25 μM) < AαC (LC50 = 8.16 μM) < 2,4-DNT (LC50 = 177.05 μM). For AαC and 2,4 DNT hypo-pigmentation was observed in addition (AαC EC50 = 1.81 μM; 2,4-DNT EC50 = 8.81 μM). Two binary and one ternary mixture were studied on lethality and one on hypo-pigmentation: 2,4-DNT/AαC (LC50 = 119.21 μM, EC50 = 5.37 μM), carbendazim/AαC (LC50 = 4.49 μM) and AαC/Carbendazim/2,4 DNT (LC50 = 108.62 μM). Results showed that the effects were in agreement with the CA model when substances were tested in mixtures. Therefore, in a reasonable worst case scenario substance combination effects in fish embryos were at maximum only prone to overestimation when using CA as the mixture concept.
dauerhafte UFZ-Verlinkung
Schmidt, S., Busch, W., Altenburger, R., Küster, E. (2016):
Mixture toxicity of water contaminants-effect analysis using the zebrafish embryo assay (Danio rerio)
Chemosphere 152 , 503 - 512 10.1016/j.chemosphere.2016.03.006