Investigation of acute toxicity of cadmium-arsenic mixtures to Daphnia magna with toxic units approach

Authors : Şeyda FİKİRDEŞİCİ, Ahmet ALTINDAĞ, Ebru ÖZDEMİR

Pages : 543-550

View : 20 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The acute toxicities of cadmium chloride insert ignore into journalissuearticles values(CdCl2.H2O);, arsenic trioxide insert ignore into journalissuearticles values(AS2O3);, and their mixtures to Daphnia magna were investigated by employing the statistical method of aquatic toxicity. The data obtained were statistically evaluated with probit analysis method insert ignore into journalissuearticles values(SPSS 17.0);. The 24 h LC50 of Cd and As to Daphnia magna was estimated to be 44 µg L-1 for Cd, and 509 µg L-1 for As, respectively. With Behrens-Karber method the 24 h LC50 of these metals was found to be 46 µg L-1 and 509 µg L-1, respectively. The 2 methods were in good agreement. The results suggested that D. magna is more sensitive to the 90% Cd + 10% As mixture than either metal alone. Toxic units insert ignore into journalissuearticles values(TUs); and additional index insert ignore into journalissuearticles values(AI); showed that all mixtures were synergistic.
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