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Number of results

Journal

2011 | 9 | 1 | 119-125

Article title

Selenium determination in tissue samples of Nile tilapia using ultrasound-assisted extraction

Content

Title variants

Languages of publication

EN

Abstracts

EN
This paper proposes a method to determine selenium in samples of fish muscle and liver tissue using ultrasound assisted extraction process, and analysed by graphite furnace atomic absorption spectrometry (GFAAS). The selenium content was extracted by 0.10 M HCl at the optimal extraction conditions which were established as follows: sample mass of 100 mg; granulometry of the sample <60 µm; sonication time of five 40 s cycles; and sonication power of 136 W. The selenium determinations were performed by GFAAS, at a drying temperature of 120°C/250°C, pyrolysis temperature of 1300°C, atomization temperature of 2300°C, and cleaning temperature of 2800°C. Palladium nitrate was used as a chemical modifier coinjected with the samples, and tungsten as a permanent modifier. The concentration of selenium determined in the pool of fish muscle and liver tissue were 280.4±4.2 e 592.3±6.7 μg kg−1, respectively. The accuracy and precision of the proposed extraction method were evaluated using certified standard Bovine Muscle - NIST 8414. The results obtained by the ultrasonic extraction method were equivalent to those obtained by the method of acid mineralization of samples in a microwave oven

Publisher

Journal

Year

Volume

9

Issue

1

Pages

119-125

Physical description

Dates

published
1 - 2 - 2011
online
16 - 12 - 2010

Contributors

author
  • FMVZ/UNESP — Postgraduate Program in Zootechny, C. Postal 31, 15385-000, Botucatu, SP, Brazil
  • IB/UNESP — Department of Physical and Biophysical, C. Postal 510, 18618-970, Botucatu, SP, Brazil
  • FEIS/UNESP — Department of Physical and Chemistry, C. Postal 31, 15385-000, Ilha Solteira, SP, Brazil
author
  • UFAL — Institute of Chemistry and Technology, 57072-970, Maceió, Al, Brazil
  • GAIA-EMBRAPA PECUÁRIA SUDESTE, C. Postal 339, 13560-970, São Carlos, SP, Brazil
author
  • IB/UNESP — Department of Chemistry and Biochemistry, C. Postal 510, 18618-970, Botucatu, SP, Brazil
author

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-010-0121-0
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