Pay special attention to the transformation products of PPCPs in environment

Pharmaceuticals and personal care products (PPCPs) have received increasing attention. However, their transformation products (TPs) and metabolites, sometimes even with environmental concentration and/or toxicity higher than their parent compounds, received attention far from enough. This study gives useful insight on the occurrence, fate and toxicity of PPCP TPs or metabolites in WWTPs, surface water and even drinking water, highlighting the necessity of studying the PPCP TPs formation, occurrence, toxicity and environment risk, and further evaluating the environmental risk caused by PPCPs comprehensively.