A simplified analysis of dimethylarsinic acid by wavelength dispersive X-ray fluorescence spectrometry combined with a strong cation exchange disk

- A simplified approach for the analysis of DMAV has been developed.
- A strong cation exchange (SCX) disk was used to pre-concentrate DMAV from water samples.
- The SCX disk adsorbing DMAV was directly analyzed by WDXRF.
- A correction factor was derived to compensate for the Pb interference effect.
- The accuracy and precision of the SCX-WDXRF method were assessed by spike tests.