| chemical and biological characterization of estrogenicity in effluents from wwtps in ria de aveiro (nw portugal). | effluents from wastewater treatment plants (wwtps) are responsible for the input of estrogenic contaminants into aquatic ecosystems, leading to widespread effects in wildlife. in the present work, levels of estrone (e1), 17alpha- and 17beta-estradiol (e2), 17alpha-ethinylestradiol (ee2), bisphenol a (bpa), and nonylphenol (np) were quantified in effluents from wwtps located in ria de aveiro (nw portugal), as well as in the final effluent discharged into the atlantic ocean through the s. jacinto ... | 2010 | 19381711 |