Sequential extraction-spectrofluorimetric determination of strontium and calcium using cryptand ethers

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Analytical Letters; (United States)

DOI:https://doi.org/10.1080/00032719208018531· OSTI ID:5570730

Andres, E; Fuente, E; Blanco, D ^[1]

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1. Univ. de Oviedo (Spain)

A spectrofluorimetric method for the determination of ultratrace amounts of strontium and calcium 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 a counter ion. A linear working range from the detection limit to 450 ng ml{sup {minus}1} of strontium and to 100 ng ml{sup {minus}1} of calcium was obtained. The relative standard deviation was 3.5% - 2.9%. The proposed method has been applied successfully to the determination of trace amounts of strontium and calcium in sugar and chemicals.

• OSTI ID: 5570730
• Journal Information: Analytical Letters; (United States), Journal Name: Analytical Letters; (United States) Vol. 25:2; ISSN ANALB; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ALCOHOLS
ALKALINE EARTH METALS
CALCIUM
COMPLEXES
ELEMENTS
EXTRACTION
GLYCOLS
HYDROXY COMPOUNDS
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
SEPARATION PROCESSES
SPECTROSCOPY
STRONTIUM
TRACE AMOUNTS