Liquid-Liquid Extraction of Palladium(II) from Hydrobromic Acid Media by Hexadecylpyridinium Bromide

A simple and rapid liquid-liquid extraction of palladium has been studied involving ion-pairing of bromocomplexes of palladium(II) with hexadecylpyridinium bromide (HDPB) dissolved in chloroform. The stoichiometry and distribution of (HDP)2PdBr4 between the aqueous and organic phase was investigated...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Analytical Sciences Jg. 18; H. 3; S. 307 - 311
Hauptverfasser: SALIMI, Shabnam, JABBARI, Ali, ALIZADEH, Naader
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Tokyo The Japan Society for Analytical Chemistry 2002
Japan Society for Analytical Chemistry
Nature Publishing Group
Schlagworte:
Analytical chemistry
Chemistry
Chloroform
Exact sciences and technology
Palladium
Spectrometric and optical methods
Equilibrium constant
Chemical analysis
Ion pair production
Interelement effect
Liquid liquid extraction
Cationic surfactant
Association constant
Chemical enrichment
Transition metal Ions
Palladium ion
Chemical properties
Aqueous solution
Hydrobromic acid
Platinoid Ions
Quantitative analysis
Ultraviolet visible spectrometry
Atomic absorption spectrometry
ISSN:0910-6340, 1348-2246
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A simple and rapid liquid-liquid extraction of palladium has been studied involving ion-pairing of bromocomplexes of palladium(II) with hexadecylpyridinium bromide (HDPB) dissolved in chloroform. The stoichiometry and distribution of (HDP)2PdBr4 between the aqueous and organic phase was investigated by spectrophotometric mole ratio method. The extraction efficiency of palladium(II) by HDPB was studied as a function of several variables: acid, salt, surfactant concentration and equilibrium time. The results showed that PdBr42- extraction could be explained by assuming the formation of (HDP)2PdBr4 complexes in the aqueous solution and transfer to organic phase. The extraction was fast and the shaking time was only a few min. The average recovery of palladium(II) from an aqueous solution containing 10 µg/ml of analyte was 99% with an RSD% of 0.95. The percentage recovery of 0.2 µg/ml palladium(II) was 96%.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.18.307