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2010 | 8 | 1 | 34-40
Tytuł artykułu

Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Brilliant green was used as a complexing agent in cloud point extraction (CPE) and applied for selective preconcentration of trace amounts of gold in geological matrices. The analyte in the initial aqueous solution was acidified with hydrochloric acid (0.1 M) and octylphenoxypolyethoxyethanol (Triton X-114) was added as a surfactant. After phase separation, based on the cloud point separation of the mixture, the surfactant rich phase was diluted with methanol and the analyte determined in the surfactant rich phase by flame atomic absorption spectrometry (FAAS). After optimization of the complexation and extraction conditions, a preconcentration factor of 31 was obtained for only 10 mL of sample. The analytical curve was linear in the range of 3–1000 ng mL−1 and the limit of detection was 1.5 ng mL−1. The proposed method was applied to the determination of gold in geological samples. [...]
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
1
Strony
34-40
Opis fizyczny
Daty
wydano
2010-02-01
online
2010-02-16
Twórcy
  • Department of Isotopes Geology, Nuclear Materials Authority, El Maadi, P.O. Box 530, Cairo, Egypt
  • Department of Isotopes Geology, Nuclear Materials Authority, El Maadi, P.O. Box 530, Cairo, Egypt
autor
  • Department of Isotopes Geology, Nuclear Materials Authority, El Maadi, P.O. Box 530, Cairo, Egypt, saidnouh81@yahoo.com
  • Department of Chemistry, Faculty of Science, University of Zagazig, P.O. Box 44519, Zagazig, Egypt
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0093-0
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