Variables: concentration Substances: diclofenac (DCOPUUMXTXDBNB-UHFFFAOYSA-N) mecoprop (WNTGYJSOUMFZEP-UHFFFAOYSA-N) diazinon (FHIVAFMUCKRCQO-UHFFFAOYSA-N) terbutryn (IROINLKCQGIITA-UHFFFAOYSA-N) Systems: flow channel experimental hall Keywords: pharmaceutical sewer overflows monitoring pesticide