Analysis of Organic and Inorganic Arsenic in Waste Water of Agricultural Environment by High Performance Liquid Chromatography and Inductively Coupled Plasma Mass Spectrometry

A high performance liquid chromatography and inductively coupled plasma mass spectrometric method was established for analyz-ing 4 arsenic speciations in water of agricultural environment, including As(Ⅲ)，MMA, DMA and As( V).The results showed that the method had a wide linear range(1~300 μg·L-1)and the linear coefficients were more than 0.999 0. The detection limits were very low ( 0.7-0.9μg·L-1).All of the relative standard deviations(RSD) were less than 5%. The recoveries were between 94% and 112%. The analysis results showed that As( V)and As(Ⅲ)were the main arsenic speciations existed in the waste water of agricultural environment