An automatic, vigorous-injection assisted dispersive liquid-liquid microextraction technique for stopped-flow spectrophotometric detection of boron

Michal Alexovič, Marcin Wieczorek, Joanna Kozak, Paweł Kos̈cielniak, I. Balogh, Vasil Andruch

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A novel automatic vigorous-injection assisted dispersive liquid-liquid microextraction procedure based on the use of a modified single-valve sequential injection manifold (SV-SIA) was developed and applied for determination of boron in water samples. The major novelties in the procedure are the achieving of efficient dispersive liquid-liquid microextraction by means of single vigorous-injection (250 μL, 900 μL s-1) of the extraction solvent (n-amylacetate) into aqueous phase resulting in the effective dispersive mixing without using dispersive solvent and after self-separation of the phases, as well as forwarding of the extraction phase directly to a Z-flow cell (10 mm) without the use of a holding coil for stopped-flow spectrophotometric detection. The calibration working range was linear up to 2.43 mg L-1 of boron at 426 nm wavelength. The limit of detection, calculated as 3s of a blank test (n=10), was found to be 0.003 mg L-1, and the relative standard deviation, measured as ten replicable concentrations at 0.41 mg L-1 of boron was determined to be 5.6%. The validation of the method was tested using certified reference material.

Original languageEnglish
Pages (from-to)127-133
Number of pages7
JournalTalanta
Volume133
DOIs
Publication statusPublished - 2015

Fingerprint

Liquid Phase Microextraction
Boron
Injections
Liquids
Calibration
Limit of Detection
Solvent extraction
Water
Wavelength

Keywords

  • Automation
  • Boron
  • Dispersiveliquid-liquidmicroextraction
  • Flow batch
  • Stopped-flow principle
  • Water

ASJC Scopus subject areas

  • Chemistry(all)
  • Medicine(all)

Cite this

An automatic, vigorous-injection assisted dispersive liquid-liquid microextraction technique for stopped-flow spectrophotometric detection of boron. / Alexovič, Michal; Wieczorek, Marcin; Kozak, Joanna; Kos̈cielniak, Paweł; Balogh, I.; Andruch, Vasil.

In: Talanta, Vol. 133, 2015, p. 127-133.

Research output: Contribution to journalArticle

Alexovič, Michal ; Wieczorek, Marcin ; Kozak, Joanna ; Kos̈cielniak, Paweł ; Balogh, I. ; Andruch, Vasil. / An automatic, vigorous-injection assisted dispersive liquid-liquid microextraction technique for stopped-flow spectrophotometric detection of boron. In: Talanta. 2015 ; Vol. 133. pp. 127-133.
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