硒循环过程中使水体受到硒污染。将壳聚糖作为水体富硒介质。适宜的酸性条件下,Se(Ⅵ)可以很好地与壳聚糖表面的-NH3+结合,饱和吸附容量达到18.839 mg/g。所得壳聚糖硒则用于贫硒区土壤的改良,能够促进作物的生长,食用富硒作物有益于人体健康。可实现水质净化与资源的综合利用。 Selenium in the process of circulating water pollution by selenium. Chitosan as a selenium-rich water medium. Under suitable acidic conditions, Se (Ⅵ) could bind well with -NH 3 + on the surface of chitosan, and the saturated adsorption capacity reached 18.839 mg / g. The resulting chitosan selenium is used for the improvement of lean selenium soil, can promote crop growth, eating selenium-enriched crops is beneficial to human health. Water purification can be achieved and the comprehensive utilization of resources.