Despite being considered friendlier to the environment, biodiesel fuel can be harmful to aquatic organisms, especially when combined with petroleum diesel fuel. In this work we evaluated the effects of mineral diesel fuel containing increasing concentrations of biodiesel (5% and 20%, namely B5 and B20) and pure biodiesel (B100), at concentrations of 0.001 and 0.01mLL(-1), after 15 days of expos...

Background: The presence of pesticides is very prevalent in surface waters of Iran. These toxic substances may accumulate in the food chain and cause serious ecological and health problems. The aim of this study was to determine the acute toxicity of glyphosate, deltamethrin and pretilachlor as potential dangerous organic pesticides to assess lethal effects of these chemicals agents to the Gu...

background: the presence of pesticides is very prevalent in surface waters of iran due to their huge consumption for agricultural purpose. these toxic substances may accumulate in the food chain and cause serious ecological and health problems. chemical pesticides with persistent molecules (long half-life periods) pose a threat to aquatic life forms and the human population consuming the affect...

in order to understand the importance of particle size and agglomeration for nano-eco-toxicological studies in aquatic environments, the acute toxicity of two different types (suspended powder and colloidal) of silver nanoparticles (agnps) were studied in alevin and juvenilerainbow trout. fish were exposed to each type of agnps at nominal concentrations of 0.032, 0.1, 0.32, 1, 3.2, 10, 32, and ...

OBJECTIVE To measure the 96h-LC50 values of 32 substituted benzenes to the carp and to study the relationship between quantitative structure-activity and structural parameters of chemicals. METHODS The acute toxicity values of 32 substituted benzenes to the carp were determined in a semistatic test. The energy of the lowest unoccupied molecular orbital, and the highest occupied molecular orbi...

Agrichemicals have been extensively used on crop field to control unwanted invasive weed species. The impact of agrichemicals on aquatic vertebrate species has been a matter of increasing concern to researchers and environmentalist. The present study aimed to evaluate the acute effects of sublethal concentrations (10% of the LC50-96h) of an atrazine based herbicide on several immune system para...

PURPOSE: We studied the effects of exposure to mitomycin C and 5-Fluorcuracil to human RPE cultures, in growth inhibition and citoxicity. METHODS: 1) Growth inhibition: RPE cultures (3.000 cells/well) were exposed to different concentrations of mitomycin C and 5-Fluorouracil, and cell viability (MTT test) was evaluated 48h, 72h and 96h after. 2) Citotoxicity: RPE cultures (10.000 cells/well) we...