An enzyme-linked Immunosorbent assay (ELISA) was developed for the determlnath d paraquat h human exposure samples. uskrg an afillbaly dlWon d 1/5000, concentratkns of paraquat catlon In the range 0.1-27 ng/mL could be measured. Llmit of detectlon ranged from 0.1 to 1.0 ng/mL dependlng on the matrix analyzed. The method had good preclslon, wlth less than 5% betweerrrun and less than 4% withln-run varlatlon, and was selectlve for ...