Studies have been carried out on the nature of the proteins of mouse skin to which hydrocarbons are bound after topical application. No relation was found between the carcinogenic activities of various hydrocarbons and their inhibition of the incorporation of DL-lysine-2-C 1~ into mouse skin proteins. Salt fractionation of the proteins to which 1,~,5,6-dibenzanthracene-9,10-C TM is bound reveal...

background: this study aimed to investigate the biosorption of pentachlorophenol on aspergillus niger biomass as a method for removal of pentachlorophenol from aqueous solutions. methods: modified a. niger biomass with naoh was used to absorb the pentachlorophenol. the impacts of various experimental parameters like primary pentachlorophenol concentration, ph of the solution, contact time, and ...

during the past two centuries, production and consumption of nitrate, especially in agricultural field, have been increased considerably. currently many countries in the world including iran encounter to a high nitrate level in drinking water. the main reason is the seepage of agricultural runoff and municipal and industrial wastewater to water resources, particularly groundwater. from the old ...