Determination of iron(II) and total iron in environmental water samples by flow injection analysis with column preconcentration of chelating resin functionalized with N-hydroxyethylethylenediamine ligands and chemiluminescence detection
Determination of iron(II) and total iron in environmental water samples by flow injection analysis with column preconcentration of chelating resin functionalized with N-hydroxyethylethylenediamine ligands and chemiluminescence detection
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DOI：
10.1016/s0039-9140(99)00061-2
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发表时间：
1999-08-09
期刊：
影响因子：
6.1
通讯作者：
Aihara, M
中科院分区：
文献类型：
--
作者：
Hirata, S;Yoshihara, H;Aihara, M
已经开发出一种高灵敏度的流动注射分析 (FIA) 技术，用于测定环境水样中的 Fe(II) 和总铁。用于铁预浓缩的树脂是由 N-羟乙基乙二胺 (HEED) 基团功能化的大孔树脂 Amberlite XAD-4。所采用的技术是 FIA，结合在线螯合树脂预浓缩和化学发光检测 (CL)，使用明亮的磺黄素和过氧化氢试剂溶液。添加1 x 10(-6) mol的去铁胺B溶液可消除共存Fe(III)的干扰。对于浓度为2 nmol l(-1) 的5.6 ml 海水样品，Fe(II) 和总Fe 的检测限分别为0.80 和0.36 nmol l(-1)。两个样品的相对标准偏差均小于 +/- 4%。 Fe(II) 的典型分析可在 7.5 分钟内完成。该技术是通过将总铁的分析值与参考标准海水CASS-3中铁的标准值进行比较来确定的。 (C) 1999 Elsevier Science B.V. 保留所有权利。
A flow injection analysis (FIA) technique for the determination of Fe(II) and total-Fe in environmental water samples has been developed with a high sensitivity. The resin used for preconcentration of iron was the macroporous resin, Amberlite XAD-4 functionalized by N-hydroxyethylethylenediamine (HEED) groups. The technique employed was FIA by combination of on-line chelate resin preconcentration and chemiluminescence detection (CL), using brilliant sulfoflavine and hydrogen peroxide reagent solutions. The interference by coexisting Fe(III) could be eliminated by addition of 1 x 10(-6) mol of deferrioxamine B solution. The detection limits of Fe(II) and total-Fe were 0.80 and 0.36 nmol l(-1) for 5.6-ml seawater samples with a concentration of 2 nmol l(-1). The relative standard deviations for both samples were less than +/- 4%. A typical analysis for Fe(II) can be performed in 7.5 min. The technique was ascertained by comparing the analytical value of total-Fe with the certified value of Fe in the reference standard seawater CASS-3. (C) 1999 Elsevier Science B.V. All rights reserved.