A simple,inexpensive,and sensitive method was developed for the determination of inorganic arsenic species As (Ⅲ),As(Ⅴ) and total As in environmental water samples using multiwalled carbon nanotubes (MWCNTs) as solid phase extraction(SPE) adsorbents coupled with hydride generation atomic flourescence spectrometry ( HG - AFS).The procedure is based on selectively absorbance of the chelates of As(Ⅲ) - ammonium pyrrolidine dithiocarbamate (APDC) on the MWCNTs with a pH range of 0.5 ～ 4.0,while As (Ⅴ) was passed through the microcolumn without...
