1. Determination of Aromatic Amines Using Solid-Phase Microextraction Based on an Ionic Liquid-Mediated Sol-Gel Technique.
- Author
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Abbasi, Vajihe, Ali Sarafraz-Yazdi, Amiri, Amirhassan, and Vatani, Hossein
- Subjects
AROMATIC amines ,SOLID phase extraction ,IONIC liquids ,SOL-gel processes ,GAS chromatography - Abstract
A headspace solid-phasemicroextraction (HS-SPME)method was developed for isolation ofmonocyclic aromatic amines from water samples followed by gas chromatography-flame ionization detector (GC-FID). In this work, the effect of the presence of ionic liquid (namely, 1-hexyl-3-methyl-imidazolium hexafluorophosphate [C6MIM][PF6]) was investigated in the sol-gel coating solutions on the morphology and extraction behavior of the resulting hybrid organic-inorganic sol-gel sorbents utilized in SPME. Hydroxy-terminated poly(dimethylsiloxane) (PDMS) was used as the sol-gel active organic component for sol-gel hybrid coatings. Two different coated fibers that were prepared are PDMS and PDMS-IL ([C
6 MIM][PF6]) fibers. Under the optimal conditions, themethod detection limits (S/N= 3) with PDMS-IL were in the range of 0.001-0.1 ng/mL and the limits of quantification (S/N = 10) between 0.005 and 0.5 ng/mL. The relative standard deviations for one fiber (n = 5)were obtained from3.1 up to 8.5%and between fibers or batch to batch (n= 3) intherangeof5.3-10.1%. The developedmethodwas successfully applied to real water and juice fruits samples while the relative recovery percentages obtained for the spiked water samples at 0.1 ng/mL were from 83.3 to 95.0%. [ABSTRACT FROM AUTHOR]- Published
- 2016
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