Initial ecological risk assessment of eight selected human pharmaceuticals in Japan.

Department of Physical, Chemical, Geological and Environmental Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjima-cho, Tokushima 770-8502, Japan 1Faculty of Environmental Studies, Nagasaki University, 1-14 Bunkyo-cho, Nagasaki 852-8521, Japan 2Research Center for Environmental Quality Management, Kyoto University, 1-1 Yumihama, Otsu, Shiga 530-0811, Japan 3National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan