微波辅助萃取法分析沉积物标准物质中的多环芳烃
Analysis of polycyclic aromatic hydrocarbons in sediment reference materials by microwave-assisted extraction.
作者信息
Shu Y Y, Lao R C, Chiu C H, Turle R
机构信息
Chemistry Department, National Kaohsiung Normal University, Taiwan, ROC.
出版信息
Chemosphere. 2000 Dec;41(11):1709-16. doi: 10.1016/s0045-6535(00)00065-5.
The microwave-assisted extraction (MAE) of polycyclic aromatic hydrocarbons (PAHs) from harbor sediment reference material EC-1, marine sediment reference material HS-2 and PAH-spiked river bed soil was conducted. The extraction conditions for EC-1 were carried out at 70 degrees C and 100 degrees C under pressure in closed vessels with cyclohexane acetone (1:1), cyclohexane-water (3:1), hexane acetone (1:1), and hexane-water (3:1) for 10 min. A comparison between MAE and a 16-h Soxhlet extraction (SX) method showed that both techniques gave comparable results with certified values. MAE has advantages over the currently used Soxhlet technique due to a faster extraction time and lower quantity of solvent used. The consumption of organic solvent of the microwave method was less than one-tenth compared to Soxhlet.
开展了从港口沉积物标准物质EC - 1、海洋沉积物标准物质HS - 2和添加多环芳烃的河床土壤中微波辅助萃取（MAE）多环芳烃（PAHs）的研究。EC - 1的萃取条件是在70摄氏度和100摄氏度下，于密闭容器中，分别使用环己烷 - 丙酮（1:1）、环己烷 - 水（3:1）、己烷 - 丙酮（1:1）和己烷 - 水（3:1）作为萃取剂，萃取10分钟。微波辅助萃取法与16小时索氏萃取（SX）法的比较表明，两种技术得到的结果与标准值相当。由于萃取时间更短且使用的溶剂量更少，微波辅助萃取法相对于目前使用的索氏技术具有优势。与索氏萃取法相比，微波法的有机溶剂消耗量不到其十分之一。
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