Structural substitution for SO4 group in tooeleite crystal by As(V) and As(III) oxoanions and the environmental implications

As(III)-tooeleite and As(V)-tooeleite crystals were prepared through structural substitution for SO4 group by As(V) and As(III) and are of great potential in As removal and immobilization. The coordination structure of As(III)-tooeleite is much closer to the ideal crystal structure but easily affected by As(V) and SO4 group due to the stronger affinity of Fe(III) to As(V) and SO4 than As(III).470