此外，当它的使命结束后，高铁酸盐中的铁离子也会以氧化铁的形式沉淀，过滤后就是洁净的水了。
Moreover, once it has done its job, the iron in ferrates precipitates too, as iron oxide, leaving pure water behind.
用氢氧化铁共沉淀水中痕量砷，沉淀用离心机分离和富集。
The arsenic in water samples was first enriched by co-precipitation with iron hydroxide.
方法：应用共沉淀法制备外包葡聚糖的氧化铁磁性纳米颗粒（DCIONP）。
Methods:The dextran coated iron oxide nanoparticles (DCIONP) was synthesized with deposition.
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