Substances: 1.3-benzothiazole-2-sulfonate (ZCXGMSGCBDSEOY-UHFFFAOYSA-N) mecoprop (WNTGYJSOUMFZEP-UHFFFAOYSA-N) metolachlor (WVQBLGZPHOPPFO-UHFFFAOYSA-N) Keywords: Chemcatcher monitoring pesticide