Different Approaches to Solid-Phase Extraction of Lanthanum with Low-Polar Sorbents: Comparison of Dynamic Coating, Impregnation and On-Line Mixing

被引：5

作者：

Arkhipova, A. A. ^{[1
]}

Statkus, M. A. ^{[1
]}

Tsysin, G. I. ^{[1
]}

Zolotov, Yu. A. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Div Analyt Chem, Dept Chem, Moscow 119991, Russia

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 05期

关键词：

solid-phase extraction; impregnation; lanthanum; phenyl-3-methyl -4-benzoylpyrazol -5-one (PMBP); low-polar sorbents; preconcentration; dynamic coating; RARE-EARTH-ELEMENTS; METAL IONS; PRECONCENTRATION; WATER; SPECTROMETRY; SAMPLES; SYSTEM;

D O I：

10.1080/01496395.2014.964368

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three different approaches to preconcentration of metal ions using low-polar sorbents were compared: dynamic coating of the sorbent surface with hydrophobic chelating reagent; impregnation of the sorbent with a solution of the reagent in a suitable volatile organic solvent; and on-line merging of sample and reagent streams prior to solid-phase extraction of metal-reagent complexes. Lanthanum was used as a model analyte; 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP) as a reagent for preconcentration. It was found out that the most effective approach for the analyte recovery from a large sample volume is the use of a dynamically coated sorbent with high specific surface.

引用

页码：729 / 734

页数：6

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