Speciation of Iron in River Water
Speciation of Iron in River Water
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DOI：
10.2116/analsci.4.605
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发表时间：
1988-12
影响因子：
1.6
通讯作者：
M. Hiraide;Masaru Ishii;A. Mizuike
中科院分区：
文献类型：
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作者：
M. Hiraide;Masaru Ishii;A. Mizuike
铁可以胶体和悬浮颗粒形式存在于河水中，通常与腐殖物质、粘土和二氧化硅有关。提出了一种新的形态分析方案，该方案利用DEAE-Sephadex A-25阴离子交换树脂和铟处理的Amberlite XAD-2树脂的吸附以及过滤。人工制备了几种复合颗粒来模拟天然颗粒，并研究了它们的吸附行为。在检查的河水中，大约一半的溶解铁物种（通过1 -（im过滤器的部分）是带负电荷的腐殖酸胶体，其中大部分含有粘土，而其余的基本上是无机胶体，其中包括带负电荷的水合氧化铁（III）和粘土（或二氧化硅）以及带正电荷的水合氧化铁（III）的聚集体。并对铜与铁的相关性进行了讨论。
Iron may exist in river water as colloidal and suspended particles, generally associated with humic substpnces, clay and silica. A new speciation scheme is proposed using sorption on the DEAE-Sephadex A-25 anion-exchanger and the indium-treated Amberlite XAD-2 resin as well as filtration. Several composite particles have been artificially prepared to simulate natural particles and their sorption behavior has been examined. In the river water examined, about half of the dissolved iron species (the fraction which passes a 1 -(im filter) was negatively charged humic colloids, most of which contained clay, while the remainder were essentially inorganic colloids, which included negatively charged aggregates of hydrated iron(III) oxide and clay (or silica) as well as positively charged hydrated iron(III) oxide. The correlation of copper with iron is also discussed.