Organizations: Environmental Analytical Chemistry Variables: concentration Keywords: toxicity stream pyrethroids Insecticides Substances: Bifenthrin (OXCDWLBJSLVWHB-LKRLXIKPSA-N) Allethrin (ZCVAOQKBXKSDMS-UHFFFAOYSA-N) Empenthrin (YUGWDVYLFSETPE-JLHYYAGUSA-N)