Analysis of polycyclic aromatic hydrocarbons in sediment reference materials by microwave-assisted extraction |
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Authors: | Shu Y Y Lao R C Chiu C H Turle R |
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Affiliation: | Chemistry Department, National Kaohsiung Normal University, Taiwan, ROC. shuyy@nknucc.nknu.edu.tw |
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Abstract: | 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. |
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