SEQUENTIAL EXTRACTION SPECTROFLUOROMETRIC DETERMINATION OF LEAD AND MERCURY USING CRYPTAND ETHERS

被引：7

作者：

ANDRES, E

FUENTE, E

BLANCO, D

机构：

[1] Department of Analytical and Physical Chemistry, University of Oviedo, Oviedo

来源：

ANALYTICAL LETTERS | 1994年 / 27卷 / 04期

关键词：

LEAD; MERCURY; CRYPTAND ETHERS; SPECTROFLUOROMETRY ION-PAIR EXTRACTION;

D O I：

10.1080/00032719408000270

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A spectrofluorimetric method for the determination of ultratrace amounts of lead and mercury is described based on the sequential extraction of the ternary ion-association complexes formed between the cation, a cryptand as the ligand and eosin as counter ion. A linear working range from the detection limit (9 ng/ml) to 250 ng/ml of lead and 120 ng/ml of mercury was obtained. The relative standard deviation was 3.5 % - 2.1 %. We propose that this method could be used routinely to control lead and mercury simultaneous.

引用

页码：775 / 784

页数：10

共 14 条

[1] THE STABILITY OF DIVALENT 3D-METAL AND TRIVALENT 4F-METAL COMPLEXES WITH DIAZAPOLYOXA MACROCYCLIC LIGANDS [J].