Determination of Phenols in Water by Modified Polymer Extraction-Fluorine Derivative Gas Chromatography-Negative Chemical Ionization Mass Spectrometry

作者：Zhang, Li; Zhang, Chen-Ling; Zhang, Yong-Tao^*; Gui, Jian-Ye; Li, Xiao-Ya

来源：Asian Journal of Chemistry, 2014, 26(2): 423-425.

DOI：10.14233/ajchem.2014.15430

• Phenols
• Modified polymer
• Fluorine
• Negative chemical ionization mass spectrometry

A method of phenol extraction by modified styrene-divinylbenzene polymer was established. We introduced fluorine element into phenols to enhance the electronegativity and the analystes were determined by gas chromatography-negative chemical ionization mass spectrometry (Gc-NCI-MS), with detection limits lower than 0.10 mu g/L. The phenols were extracted among pH 2-4 and eluted by 3 mL, acetone and 5 mL, dichloromethane, they under the conditions of 20 mu L K2CO3 (30 %) and 2,4,5,6-pentafluoro-benzyl bromide (5 %); derivative products were purified by 6 mL toluene/hexane (6:1 v/v); analytes were analyzed qualitatively and quantitatively; by GC NCI-MS The coefficient correlations were all higher than 0.99 and detection limits were in the range of 0.03-009 mu g/L. The recovery of phenols was between 65 and 94% with relative standard deviations varied from 5 and 17 %.

• 出版日期2014-1
• 单位中国地质科学院; 中国地质科学院水文地质环境地质研究所