Spectroscopy and Spectral Analysis, Volume. 30, Issue 2, 391(2010)

Studies on TCs-Fe(Ⅲ) System Separation/Enrichment of Trace Tetracyclines Antibiotic by Combination Ionic Liquid [Hmim]PF6 Solvent Sublation with Fluorescence Spectroscopy Determination

WANG Liang1,2, YAN Yong-sheng2、*, LI Hua-ming2, and SUN Han-wen3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    It is the first time ionic liquid was applied to gas solvent sublation, which established a new method for separation/enrichment of tetracyclines(TCs) antibiotic based on ionic liquid gas solvent sublation. The optimizing experimental conditions were as follows: the mixture of ionic liquid 1-hexyl-3-methylimidazo lium hexafluorophosphats and ethy1 acetate ([Hmim]PF6-EA, φ=1/0.9) can be used as flotation solvent, Fe(Ⅲ) ion was as trapping agent, pH of test solution was 7.6, the gas flow rate was 40 mL?min-1, and the flotation time was 50 min. The complexes of TCs- Fe(Ⅲ) were pre-concentrated in the [Hmim]PF6-EA layer and this was used to determine analytes by fluorescence method directly. The linear regression equation was F=246.5c+4.32 (c: μg?10 mL-1), and correlation coefficient was 0.999 1. Recoveries between 94.2% and 100.4% were achieved from surface water and sediment samples in ponder by using this method and the relative standard deviation of 5 μg?mL-1 TCs for 5 parallel determinations was less than 3.2%. FTIR spectroscopy demonstrated that no chemical (bonding) interactions occurred between the ionic liquid and the complexes functional groups, and the ionic liquid was only solvent. The experimental result indicated that utilizing ionic liquid to float TCs in environmental sample is feasible.

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    WANG Liang, YAN Yong-sheng, LI Hua-ming, SUN Han-wen. Studies on TCs-Fe(Ⅲ) System Separation/Enrichment of Trace Tetracyclines Antibiotic by Combination Ionic Liquid [Hmim]PF6 Solvent Sublation with Fluorescence Spectroscopy Determination[J]. Spectroscopy and Spectral Analysis, 2010, 30(2): 391

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    Paper Information

    Received: Mar. 12, 2009

    Accepted: --

    Published Online: Jul. 23, 2010

    The Author Email: Yong-sheng YAN (yys@ujs.edu.cn)

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