Variables: concentration Keywords: monitoring pesticide Substances: clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) carbendazim (TWFZGCMQGLPBSX-UHFFFAOYSA-N) 2.4-D (OVSKIKFHRZPJSS-UHFFFAOYSA-N) mecoprop (WNTGYJSOUMFZEP-UHFFFAOYSA-N) diclofenac (DCOPUUMXTXDBNB-UHFFFAOYSA-N)