Keywords: Chemcatcher monitoring Systems: flow channel experimental hall Substances: diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) 1.3-benzothiazole-2-sulfonate (ZCXGMSGCBDSEOY-UHFFFAOYSA-N) clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N) 2.4-D (OVSKIKFHRZPJSS-UHFFFAOYSA-N) fipronil (ZOCSXAVNDGMNBV-UHFFFAOYSA-N) benzotriazole (QRUDEWIWKLJBPS-UHFFFAOYSA-N) carbendazim (TWFZGCMQGLPBSX-UHFFFAOYSA-N)