Sereshti Hassan, Karimi Maryam, Samadi Soheila
School of Chemistry, University College of Science, University of Tehran, Tehran, Iran.
J Chromatogr A. 2009 Jan 9;1216(2):198-204. doi: 10.1016/j.chroma.2008.11.081. Epub 2008 Dec 3.
Dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) was applied for the determination of Rose water constituents. The effective parameters such as volume of extraction and disperser solvents, temperature, and salt effect were inspected by a full factorial design to identify important parameters and their interactions. It showed that salt addition had no effect on the efficiency. Next, a central composite design was applied to obtain optimum point of the important parameters. The optimal condition was obtained as 37.0 microL for extractor, 0.42 mL for disperser and temperature for 48 degrees C. The main components that were extracted at the optimum point were benzeneethanol (24.87%), geraniol (23.07%), beta-citronellol (22.38%), nerol (8.48%), eugenol (5.98%) and linalool (5.62%).
采用分散液液微萃取（DLLME）结合气相色谱 - 质谱联用（GC - MS）法测定玫瑰水成分。通过全因子设计考察了萃取剂和分散剂体积、温度及盐效应等有效参数，以确定重要参数及其相互作用。结果表明加盐对萃取效率无影响。接下来，应用中心复合设计获取重要参数的最佳点。最佳条件为萃取剂37.0微升、分散剂0.42毫升、温度48℃。在最佳点萃取的主要成分有苯乙醇（24.87%）、香叶醇（23.07%）、β - 香茅醇（22.38%）、橙花醇（8.48%）、丁香酚（5.98%）和芳樟醇（5.62%）。
