Use of 2-Hydrazinobenzothiazole-Modified Copolymer(s) as Potential Chelating Agent for Sensitive and Selective Determination of Low Levels of Mercury in Seafood by Ultrasound-Assisted Cloud-Point Extraction Combined with Spectrophotometry.
2-Hydrazinobenzothiazole
CH3Hg+
Copolymer
Hg2+
Seafood
Spectrophotometry
Ultrasound-assisted cloud-point extraction
Journal
Biological trace element research
ISSN: 1559-0720
Titre abrégé: Biol Trace Elem Res
Pays: United States
ID NLM: 7911509
Informations de publication
Date de publication:
Sep 2019
Sep 2019
Historique:
received:
12
11
2018
accepted:
09
12
2018
pubmed:
5
1
2019
medline:
25
12
2019
entrez:
5
1
2019
Statut:
ppublish
Résumé
In this study, a new method was developed for the pre-concentration of trace mercury from seafood samples prior to analysis by spectrophotometry. The method is based on the complexation between 2-hydrazinobenzothiazole (2-HBT)-modified copolymer(s) and Hg(II) in the presence of an ionic surfactant, cetyltrimethylammonium bromide (CTAB), as sensitivity enhancer at pH 4.5 and the extraction of the complex into the surfactant-rich phase of polyethylene glycol tert-octylphenyl ether (Triton X-114) as the extractant. The variables affecting extraction efficiency were evaluated and optimized. Due to the observation that the modified copolymers are 2.5-fold more sensitive and selective to the Hg
Identifiants
pubmed: 30607700
doi: 10.1007/s12011-018-1614-5
pii: 10.1007/s12011-018-1614-5
doi:
Substances chimiques
Chelating Agents
0
Thiazoles
0
2-hydrazinobenzothiazole
615-21-4
Mercury
FXS1BY2PGL
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM