Variables: concentration Substances: diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) mecoprop (WNTGYJSOUMFZEP-UHFFFAOYSA-N) 1.3-benzothiazole-2-sulfonate (ZCXGMSGCBDSEOY-UHFFFAOYSA-N) Keywords: monitoring pesticide