Automated determination of vanadium(IV) and (V) in natural waters based on chelating resin separation and catalytic detection with Bindschedler’s green leuco base
Automated determination of vanadium(IV) and (V) in natural waters based on chelating resin separation and catalytic detection with Bindschedler’s green leuco base
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基于螯合树脂分离和 Bindschedler 绿色无色碱催化检测自动测定天然水中的钒 (IV) 和 (V)
DOI：
10.1016/s0003-2670(01)01190-4
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发表时间：
2001
影响因子：
6.2
通讯作者：
H. Karatani
中科院分区：
文献类型：
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作者：
K. Okamura;M. Sugiyama;H. Obata;M. Maruo;E. Nakayama;H. Karatani
建立了一种测定天然水体中V(V)和V（IV）的自动方法。该方法结合了使用两种螯合树脂的选择性柱萃取和使用Bindschedler绿色白碱(BGL) - kbro3体系催化检测的空气分段连续流分析（ASCFA）。该方法将ph值为2.2 ~ 3.8的样品溶液中的V(V)选择性地收集在乙酰丙酮固定化树脂上，然后将洗脱液中的V（IV）收集在8-喹啉醇固定化树脂上，使其与干扰ASCFA检测的铁类分离。V(V)和V（IV）依次用稀释的盐酸洗脱，得到的洗脱液被带入ASCFA。钒种类的浓度由BGL的吸光度测定。钒的检测范围为0.05 ~ 15.0 nm， V（IV）和V(V)在5.0nM处的标准偏差分别为1.1%和0.9%。该方法已成功应用于天然水体中钒的行为研究。
An automated method for determining V(V) and V(IV) in natural waters has been developed. The method is based on the combination of a selective column extraction using two kinds of chelating resins and an air-segmented continuous flow analysis (ASCFA) using catalytic detection with Bindschedler’s green leuco base (BGL)–KBrO3system. Based on this method, V(V) in a sample solution at pHs from 2.2 to 3.8 is selectively collected on an acetylacetone-immobilized resin and then V(IV) in the eluent is collected on an 8-quinolinole-immobilized resin separating it from iron species, which interfere with the ASCFA detection. V(V) and V(IV) are successively eluted with diluted hydrochloric acid and the resulting eluent is carried into the ASCFA. The concentrations of vanadium species are determined from the absorbance of BGL. The detection range for vanadium species was 0.05–15.0nM and the standard deviations at 5.0nM were 1.1% for V(IV) and 0.9% for V(V), respectively. The method was successfully applied to study the behavior of vanadium species in natural waters.
Hirata, J：“通过密度梯度离心分离的海鞘钒细胞中钒的价态。”
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