The application of ultrasound for the improvement of analytical procedures

Determination of boron

Jana Škrlíková, Vasil Andruch, I. Balogh, Hana Sklenářová, Petr Solich

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The aim of the presented study was to investigate the use of ultrasonic irradiation for the improvement of analytical methods. A procedure for boron determining based on the conversion of boric acid to tetrafluoroborate and subsequent spectrophotometric detection, previously reported from our laboratory, was used as a model. The optimum conditions for the conversion of boron to tetrafluoroborate anion (0.9 mol L-1 H2SO 4, 0.1 mol L-1 F-, 7 min ultrasonication) as well as for complex formation and extraction of BF4- with DIC (1 × 10-4 mol L-1 DIC) were found. The absorbance of the coloured extracts obeys Beer's law in the range 0.1-1.0 mg L-1 of B. The limit of detection calculated from a blank test (n = 10; P = 0.95) based on 3 s is 0.02 mg L-1 of B. The procedure was applied to the analysis of mineral waters and a pharmaceutical preparative. The main advantage of ultasonification is that the conversion process occurs much faster; reaction time therefore decreases from 30 min to 7 min. Moreover, it does not lead to the heating of the sample, meaning, as a consequence, the value of the blank test decreases, and the reaction does not have to be performed in a closed system.

Original languageEnglish
Pages (from-to)1275-1279
Number of pages5
JournalAnalytical Methods
Volume2
Issue number9
DOIs
Publication statusPublished - Sep 2010

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Dacarbazine
Boron
Ultrasonics
Mineral Waters
Boric acid
Drug products
Anions
Negative ions
Minerals
Irradiation
Heating
Pharmaceutical Preparations
Water
boric acid

ASJC Scopus subject areas

  • Analytical Chemistry
  • Engineering(all)
  • Chemical Engineering(all)

Cite this

The application of ultrasound for the improvement of analytical procedures : Determination of boron. / Škrlíková, Jana; Andruch, Vasil; Balogh, I.; Sklenářová, Hana; Solich, Petr.

In: Analytical Methods, Vol. 2, No. 9, 09.2010, p. 1275-1279.

Research output: Contribution to journalArticle

Škrlíková, Jana ; Andruch, Vasil ; Balogh, I. ; Sklenářová, Hana ; Solich, Petr. / The application of ultrasound for the improvement of analytical procedures : Determination of boron. In: Analytical Methods. 2010 ; Vol. 2, No. 9. pp. 1275-1279.
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