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马脾铁蛋白释放铁的反应级数和速率相数的转换
Authors
张凤章
曾润颖
+4 more
林庆梅
许良树
邱雪慧
黄河清
Publication date
20 June 1999
Publisher
Abstract
采用差示法研究铁蛋白释放铁的动力学规律和反应级数的转换。结果表明:马脾铁蛋白释放铁的速率及相数与还原剂Na2S2O4。浓度及铁还原速率无关,与该蛋白蛋白壳的调节速率有关。在pH50~6.0范围内,马脾铁蛋白以三相不同速率方式释放占原铁核总铁量80%的铁。但在pH9.0介质中,OH-不仅能参与铁蛋白铁核组成,减缓释放铁的速率,而且使原混合级反应转换为一级反应,从而使铁蛋白释放铁的动力学过程由复杂转化为简单
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Last time updated on 16/06/2016