Substances: 2.4-D (OVSKIKFHRZPJSS-UHFFFAOYSA-N) clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) diuron (XMTQQYYKAHVGBJ-UHFFFAOYSA-N) benzotriazole (QRUDEWIWKLJBPS-UHFFFAOYSA-N) Keywords: Chemcatcher monitoring polar organic pollutant accumulation