An analytical method was developed for the simultaneous determination of four arsenic species including arsenite(As(Ⅲ)), monomethylarsonic acid(MMA), dimethylarsinic acid(DMA), and arsenate(As(Ⅴ)) in chickens by liquid chromatography-hydride generation-atomic fluorescence spectrometry(HPLC-HG-AFS). The extraction of arsenic species from chicken samples was accomplished in 0.15 mol·L~(-1) nitric acid with ultrasonic wave. The different arsenic species were separated on a PRP-X100 anion exchange column and an...