Variables: concentration Keywords: monitoring Systems: flow channel experimental hall Substances: clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N) diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) benzotriazole (QRUDEWIWKLJBPS-UHFFFAOYSA-N)