Variables: concentration Keywords: monitoring polar organic pollutant pesticide Substances: fipronil (ZOCSXAVNDGMNBV-UHFFFAOYSA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N) diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) diclofenac (DCOPUUMXTXDBNB-UHFFFAOYSA-N) terbutryn (IROINLKCQGIITA-UHFFFAOYSA-N)