Pollution characteristics, sources and ecological risks of steroid hormones in Fangchenggang Bay, South China Sea: Significant impacts of rivers and domestic sewage entering the sea.

The characteristics, sources and ecological risk of steroid hormone pollution were investigated at 14 stations in Fangchenggang Bay. The results revealed that the detection rate of the steroid hormones in both seawater and sediment was 100 %. Twenty-four types of steroid hormones were detected in seawater, and the concentrations ranged from 0.