Variables: concentration Substances: clarithromycin (AGOYDEPGAOXOCK-KCBOHYOISA-N) carbamazepine (FFGPTBGBLSHEPO-UHFFFAOYSA-N) diazinon (FHIVAFMUCKRCQO-UHFFFAOYSA-N) terbutryn (IROINLKCQGIITA-UHFFFAOYSA-N) Keywords: passive sampler Chemcatcher monitoring polar organic pollutant pesticide