Keywords: Chemcatcher Substances: 2.4-D (OVSKIKFHRZPJSS-UHFFFAOYSA-N) benzotriazole (QRUDEWIWKLJBPS-UHFFFAOYSA-N) clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N)