Published May 2000 | Version v1
Journal article Metadata-only

Use of graph theory for evaluating the selectivity of flow-injection analysis based on displacement reactions: determination of alkaline earth metals in water-ammonia media

Creators

  • 1. Rossijskij Khimiko-Tekhnologicheskij Univ. im. D.I. Mendeleeva, Moscow (Russian Federation)

Description

A theory was developed for quantitatively evaluating the selectivity in the determination of metals by the flow-injection technique with spectrophotometric detection. The theory was applied to flow-injection analysis based on the ability of alkaline-earth metals to displace copper(2) ions in the Cu2+-EDTA-4-(2'-pyridylazo)resorcinol system in water-ammonia solutions. The feasibility of the theory was demonstrated. It was shown how the theory could be used for the selection of justified conditions in the determination of Ca, Sr, and Ba and for the evaluation of the selectivity of the determination. Practical examples of the determination of Ca confirm the usefulness of the approach developed

Abstract (Russian)

Разработана теория количественной оценки избирательности при определении металлов методом проточно-инжекционного анализа (ПИА) со спектрофотометрической регистрацией сигнала. Практическое приложение теории продемонстрировано на примере использования ПИА способности щелочноземельных металлов вытеснять ионы меди(2) в системе Сu2+-ЭДТА-4-(2'-пиридилазо)резорцин в водно-аммиачных растворах. Показано, каким образом теория позволяет обосновывать условия определения Ca, Sr и Ba и оценивать его избирательность. Практические примеры определения кальция подтверждают полезность разработанного подхода

Additional details

Additional titles

Original title (Russian)
Применение метода графов для оценки избирательност проточно-инжекционного анализа на основе реакции вытеснения. Определение щелочноземельных металлов в водно-амиачных средах

Publishing Information

Journal Title
Zhurnal Analiticheskoj Khimii
Journal Volume
55
Journal Issue
5
Journal Page Range
p. 526-531
ISSN
0044-4502
CODEN
ZAKHA8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32007768
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMMONIUM HYDROXIDES; AQUEOUS SOLUTIONS; CHEMICAL REACTIONS; COPPER COMPLEXES; EDTA; INTERFERING ELEMENTS; PYRIDYLAZORESORCINOL; QUANTITATIVE CHEMICAL ANALYSIS; SPECTROPHOTOMETRY; STRONTIUM COMPLEXES; STRONTIUM COMPOUNDS
Descriptors DEC
ALKALINE EARTH METAL COMPLEXES; ALKALINE EARTH METAL COMPOUNDS; AMINO ACIDS; AMMONIUM COMPOUNDS; AROMATICS; AZINES; CARBOXYLIC ACIDS; CHELATING AGENTS; CHEMICAL ANALYSIS; COMPLEXES; DIAZO COMPOUNDS; DISPERSIONS; HETEROCYCLIC COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXIDES; HYDROXY COMPOUNDS; MIXTURES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHENOLS; POLYPHENOLS; PYRIDINES; REAGENTS; SOLUTIONS; TRANSITION ELEMENT COMPLEXES

Optional Information

Notes
16 refs., 5 figs., 2 tabs.