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中文摘要：
以葡聚糖和壳聚糖为有机基质，进行铁的生物（有机质）矿化模拟实验，研究多糖对氢氧化铁凝胶矿化结晶行为的调控作用。实验结果表明，氢氧化铁凝胶在多糖分子中成核、生长，通过有机大分子的自组装作用，形成纳米级的正方纤铁矿（β-FeOOH）。产物的形状、大小及其结构类型由多糖分子的结构和浓度决定。
英文摘要：
To investigate the modulating effect of polysaccharide upon the mineralization of iron hydroxide, a series of simulative biomineralization experiments using dextran and ehitosan as organic substrates were conducted in this paper. The results showed that iron hydroxide gel nucleated and grew in polysaccharide molecule, and the nanometric size akaganeite formed with the self-assembly effect of dextran or chitosan. The shape, size and crystal structure of the iron oxyhydroxide mineral formed from iron hydroxide gel depend on the type of polysaccharide and its concentration.
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