Variables: concentration Substances: Acrinathrin (YLFSVIMMRPNPFK-WEQBUNFVSA-N) Bifenthrin (OXCDWLBJSLVWHB-LKRLXIKPSA-N) Cypermethrin (KAATUXNTWXVJKI-UHFFFAOYSA-N) Systems: stream Keywords: pyrethroids toxicity stream Insecticides