Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.chemosphere.2016.03.006
Title (Primary) Mixture toxicity of water contaminants-effect analysis using the zebrafish embryo assay (Danio rerio)
Author Schmidt, S.; Busch, W. ORCID logo ; Altenburger, R.; Küster, E. ORCID logo
Source Titel Chemosphere
Year 2016
Department BIOTOX
Volume 152
Page From 503
Page To 512
Language englisch
Keywords Baseline toxicity; DNA damage; FET; Micro pollutant
UFZ wide themes 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.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=17231
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