Method-performance studies of notified analytical method for chinomethionat

Method-performance studies were conducted for the notified revised analytic al method of chinomethionat in agricultural products by interlaboratory stu dy. Six laboratories analyzed unpolished rice, cabbage, squash, lettuce and orange spiked with 0.1 mug/g of chinomethionat in replicate, Mean values o f recovery from the 5 crops ranged from 90.2 to 100.5%. Repeatability relat ive standard deviations ranged from 4.4 to 7.7% and reproducibility relativ e standard deviations ranged from 10.9 to 17.1%. The detection limits were 0.003-0.012 mug/g.