Determination of Iron in Abandoned Mine Drainage by UV‐Vis Spectrophotometry and Flame Atomic Absorption Spectrophotometry
Determination of Iron in Abandoned Mine Drainage by UV‐Vis Spectrophotometry and Flame Atomic Absorption Spectrophotometry
复制标题
DOI：
10.1080/00387010701293583
复制
发表时间：
2007-05
影响因子：
1.7
通讯作者：
Mark T. Stauffer;Leland J. Hunter;Steven K. Troncone
中科院分区：
文献类型：
--
作者：
Mark T. Stauffer;Leland J. Hunter;Steven K. Troncone
摘要 本文描述并比较了采用紫外可见分光光度法 (UV-Vis) 和火焰原子吸收分光光度法 (FAAS) 测定宾夕法尼亚州西部选定地点废弃矿井排水 (AMD) 中总铁的结果。由于我们的实验室拥有这两种方法，因此在任何一种方法出现仪器问题时，使用铁 (II) 螯合剂 2,4,6-三吡啶基-1,3,5-三嗪 (TPTZ) 和 FAAS 的 UV-Vis 铁结果的准确度和精密度都很重要。校准曲线显示出优异的线性度（R 2≥0.990）。结果显示出良好的准确性（加标铁的完全回收）和精密度（UV-Vis 为 0.5–3.4% RSD，FAAS 为 1.5–7.7% RSD），表明两种方法都适合测定 AMD 中的铁。这项比较研究是向学生教授紫外可见分光光度法和原子吸收光谱法及其优缺点的潜在方法。
Abstract This paper describes and compares the results obtained from determination of total iron in abandoned mine drainage (AMD) from selected sites in western Pennsylvania by UV‐visible spectrophotometry (UV‐Vis) and flame atomic absorption spectrophotometry (FAAS). As our laboratory possesses both methods, the accuracy and precision of iron results by UV‐Vis, using iron (II) chelator 2,4,6‐tripyridyl‐1,3,5‐triazine (TPTZ), and FAAS are of interest in the event of instrument problems with either method. Calibration curves show excellent linearity (R 2≥0.990). The results show good accuracy (complete recovery of spiked iron) and precision (0.5–3.4% RSD by UV‐Vis, 1.5–7.7% RSD by FAAS), indicating both methods are suitable for determination of iron in AMD. This comparison study is presented as a potential approach to teaching students about UV‐Vis and FAAS and their advantages and disadvantages.