Quantitative analysis of trace levels of β-ionone in water by liquid-liquid-phase extraction-gas chromatography-mass spectrometry (LLE-GC-MS)

Meng hong Gao, Nai yun Gao, Hui hui Xie, Na An, Yang Deng, Wen lei Rong

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2 Scopus citations

Abstract

A simple and rapid technique based on liquid-liquid extraction coupled to gas chromatography-mass spectrometric detection (LLE-GC-MS) was developed for analysis of taste and odour compound β-ionone in water. Instrument parameters including programmed oven temperature, injection temperature and ion source temperature were evaluated and optimized. Effects of extraction time, ionic strength and pH on the detection efficiency were investigated and optimum conditions were 8 min of extraction time, without NaCl addition at pH=9. Good linearity (R2=0.9997) was obtained when the linear range was 10–500 μg/L. The recoveries of β-ionone in ultrapure water and tap water samples were 88%–95% and 110%–114%, respectively. The relative standard deviations (RSD) were less than 10%. The method detection limit (MDL) and rejection quality level (RQL) were achieved at 1.98 μg/L and 6.53 μg/L, respectively. LLE-GC-MS was demonstrated to be a rapid and convenient method for the determination of β-ionone in water samples.

Original languageEnglish
Pages (from-to)472-477
Number of pages6
JournalJournal of Central South University
Volume22
Issue number2
DOIs
StatePublished - 1 Jan 2015

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Keywords

  • gas chromatography-mass spectrometry
  • liquid-liquid extraction
  • water
  • β-ionone

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