Substances: benzotriazole (QRUDEWIWKLJBPS-UHFFFAOYSA-N) clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) diclofenac (DCOPUUMXTXDBNB-UHFFFAOYSA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N) Systems: flow channel experimental hall Keywords: monitoring