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SPECIATION OF IRON (Fe2+, Fe3+) IN VARIOUS DRINKING WATERS USING FAAS AND UV-VISIBLE SPECTROSCOPY

机译:使用FAAS和紫外-可见光谱法测定各种饮用水中铁(Fe2+、Fe3+)的形态

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摘要

In recent years, inorganic iron species has become essentially pertinent in water, liquid beverages and food samples. There are many different methods for speciation studies. But most of them have an expensive and complicated structure. In this study, a simple, sensitive and inexpensive method of speciation was carried out. The FAAS device was used for all of the iron deposition in the samples. The iron in the sample was reduced tofe (II) by hydroxylam ine hydrochloride toform Fe (II) -1,10 phenanthroline orange-red complex. The amount of Fe (II) in the resulting colored complex was determined by U V -visible instrument.Once the total of the iron was determined by FAAS, the amount of Fe (III) in the sample was calculated by subtracting the content of Fe(II) from content of total Fe. Under the optim ized conditions, detection lim it (3sblank/m) of 0.015 gm L"1 was obtained from the calibration curve constructed in the range of 0.5-5.0 gm L"1 w ith a correlation coefficient of 0.997 for Fe(II).
机译:近年来,无机铁种类在水、液体饮料和食品样品中已基本相关。物种形成研究有许多不同的方法。但它们中的大多数都具有昂贵且复杂的结构。在这项研究中,进行了一种简单,灵敏和廉价的物种形成方法。FAAS装置用于样品中的所有铁沉积。样品中的铁被盐酸羟胺还原为Fe(II)-1,10菲咯啉橙红色络合物。所得有色络合物中Fe(II)的含量由U V-可见光仪器测定。通过FAAS确定铁的总量后,通过从总铁的含量中减去Fe(II)的含量来计算样品中Fe(III)的含量。在优化条件下,在0.5-5.0 gm L“1范围内构建的校准曲线(3sblank/m)得到0.015 gm L”1的检测结果,Fe(II)的相关系数为0.997。

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