基于与4-（2-吡啶偶氮）间苯二酚柱前螯合的离子对高效液相色谱法测定钼、铬和钒
Determination of molybdenum, chromium and vanadium by ion-pair high-pressure liquid chromatography based on precolumn chelation with 4-(2-pyridylazo)resorcinol.
作者信息
Xiao-Song Z, Xiang-Ping Z, Chang-Shan L
机构信息
Department of Applied Chemistry, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.
出版信息
Talanta. 1986 Oct;33(10):838-40. doi: 10.1016/0039-9140(86)80203-x.
A reversed-phase ion-pair liquid chromatography-spectrophotometric detection system for the separation and simultaneous determination of molybdenum, chromium and vanadium is described. The chelates of the metal ions with 4-(2-pyridylazo)resorcinol are separated on a Zorbax CN column with 1 x 10(-3)M tetrabutylammonium iodide and 0.01M KH(2)PO(4)-Na(2)HPO(4) buffer (pH 7.50) in 30:70 v v methanol-water mixture as the mobile phase, at a flow-rate of 1.0 ml min . The chelates are detected spectrophotometrically at 540 nm.
本文描述了一种用于分离和同时测定钼、铬和钒的反相离子对液相色谱 - 分光光度检测系统。金属离子与4 - （2 - 吡啶偶氮）间苯二酚形成的螯合物，在Zorbax CN柱上进行分离，流动相为含1×10⁻³M碘化四丁基铵和0.01M磷酸二氢钾 - 磷酸氢二钠缓冲液（pH 7.50）的30:70（v/v）甲醇 - 水混合物，流速为1.0 ml/min。螯合物在540 nm处进行分光光度检测。
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