FIELD: chemistry.
SUBSTANCE: sorbent for clearing of water environments from an arsenic is offered. The sorbent contains 98-99 wt % of iron nanoparticles and starch. To produce the sorbent, ferric sulphate and starch are dissolved in water to form a complex of iron ions with starch, nitrogen is passed through the solution, the iron-containing complex is reduced by borohydride to obtain iron nanoparticles. Further, centrifugation, washing of the precipitate with ethanol and drying are carried out.
EFFECT: sorbent possesses high adsorption activity in relation to arsenic ions.
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