Journal ArticleDOI
Preconcentration and determination of calcium and magnesium in brine with flow-injection systems
TLDR
In this article, a method based on the exchange between calcium ions and Mg(EDTA) is proposed to enchance the sensitivity for calcium, which is measured by difference.About:
This article is published in Analytica Chimica Acta.The article was published on 1988-01-01. It has received 8 citations till now. The article focuses on the topics: Calcium & Magnesium.read more
Citations
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Journal ArticleDOI
Recent Advances in Ultraviolet-Visible Spectrophotometry
TL;DR: The application of spectrophotometric detection in hydrodynamic systems is surveyed in this paper, where new types of color systems employing macrocyclic compounds, porphyrines, surfactants, and basic dyes are evaluated.
Journal ArticleDOI
Iminodiacetic acid functionalised monolithic silica chelating ion exchanger for rapid determination of alkaline earth metal ions in high ionic strength samples.
TL;DR: Using the first reported high-performance monolithic chelating ion exchange column, separation and determination of traces of alkaline earth metal ions in high ionic strength samples could be achieved in under 40 s.
Journal ArticleDOI
Determination of trace metals in concentrated brines using inductively coupled plasma mass spectrometry on-line preconcentration and matrix elimination with flow injection
TL;DR: In this paper, an online preconcentration matrix elimination procedure was developed for the analysis of concentrated brines by inductively coupled plasma mass spectrometry, where elements of interest (alkaline earths and first row transition metals) were concentrated quantitatively and isolated from the sodium chloride matrix using a chelating ion-exchange column.
Journal ArticleDOI
Monolithic chromatography for elemental and speciation analysis
Janez Ščančar,Radmila Milačič +1 more
TL;DR: In this article, a review of applications of monolithic supports for chromatographic separation of metal cations and the potential for using monolithic chromatography in elemental speciation analysis is presented.
Journal ArticleDOI
Flow-injection fluorimetric determination of traces of calcium in brine
TL;DR: In this paper, the detection limit of calcium was 3.5% for twelve injections of 20 μg 1 −1 Ca in chlor-alkali brine with a relative standard deviation of 3.4% for samples not containing and containing sodium chloride.
References
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Journal ArticleDOI
Recent developments in flow injection analysis: gradient techniques and hydrodynamic injection
J. Růžička,Elo Harald Hansen +1 more
TL;DR: A comprehensive review of flow injection analysis techniques can be found in this article, where a hydrodynamic injector with no moving parts and zero dead volumes is presented, as well as a detailed description of the most recent development within flow injection.
Journal ArticleDOI
Synthesis of o,o′-dihydroxyazo compounds and their application to the determination of magnesium and calcium by flow injection analysis
TL;DR: In this paper, seven o,o′-dihydroxyazo dyes were synthesized and examined as spectrophotometric reagents for magnesium and calcium, including 2-(2-hydroxy-3,6-disulfo-1-naphthylazo)-5-(N,N-diethylamino)phenol.
Related Papers (5)
Synthesis of o,o′-dihydroxyazo compounds and their application to the determination of magnesium and calcium by flow injection analysis
Sequential spectrophotometric determination of calcium and magnesium in fresh waters with beryllon-II
Qui Xing-Chu,Zhu Ying-Quan +1 more