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首页> 外文会议>Italian Conference on Chemical and Process Engineering >Pressurized Hot Water Extraction of Phenolic Compounds and Their Analysis by GC-MS and CZE
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Pressurized Hot Water Extraction of Phenolic Compounds and Their Analysis by GC-MS and CZE

机译：GC-MS和CZE的加压热水提取酚类化合物及其分析

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摘要

Water is an environmentally friendly solvent, which can be used in various extraction processes. Self-constructed pressurized hot water extraction (PHWE) equipment was employed to extract spiked phenolics (phenol, 3-methylphenol, 4chloro-3-methylphenol and 3,4-dichlorophenol) from sea sand and soil at various temperatures. For comparison, analysis of the phenols was carried out by both gas chromatography-mass spectrometry (GC-MS) and capillary zone electrophoresis (CZE). Good recoveries for phenols spiked in sea sand were achieved at all PHWE temperatures. The recoveries of the phenols spiked in the soil were generally slightly lower than those of phenols spiked in sea sand. GC-MS studies showed that phenols were selectively extracted from soil at 50°C, but many other compounds (e.g. polyaromatic hydrocarbons) were found at 300°C. Good resolution was achieved in CZE for the separation of phenols at pH 9.7, and the analysis was not interfered by the co-extracted compounds from the soil at 300°C. To conclude, PHWE efficiency was good and a reliable analysis of phenols was carried out generally by both GC-MS and CZE.
机译：水是一种环保型溶剂，可用于各种提取过程。使用自建造的加压热水萃取（PHWE）设备在各种温度下从海砂和土壤中提取尖刺酚醛（苯酚，3-甲基苯酚，4-氯-3-甲基苯酚和3,4-二氯苯酚）。为了比较，通过气相色谱 - 质谱（GC-MS）和毛细管区电泳（CZE）进行酚类的分析。在所有PHWE温度下，实现了在海砂中掺入的酚的良好回收率。在土壤中掺入的酚的回收率通常略低于海沙上掺入的酚。 GC-MS研究表明，在50℃下选择性地从土壤中选择性地萃取酚，但是在300℃下发现许多其他化合物（例如多芳芳烃）。在CIZE中实现了良好的分辨率，用于在pH9.7处分离酚，并且通过在300℃下的土壤中的共萃取化合物不会干扰分析。为了得出结论，PHWE效率良好，并且通过GC-MS和CZE通常对苯酚进行可靠的分析。

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