Analysis of polycyclic aromatic hydrocarbons in sediment reference materials by microwave-assisted extraction.
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.
Shu
Y Y
YY
Chemistry Department, National Kaohsiung Normal University, Taiwan, ROC. shuyy@nknucc.nknu.edu.tw
Lao
R C
RC
Chiu
C H
CH
Turle
R
R
D000096:Acetone; D003510:Cyclohexanes; D019015:Geologic Sediments / Q000737:chemistry*; D006586:Hexanes; D006841:Hydrocarbons, Aromatic / Q000032:analysis*; D008872:Microwaves; D011786:Quality Control; D012015:Reference Standards; D012997:Solvents; D014867:Water
D003510:Cyclohexanes; D006586:Hexanes; D006841:Hydrocarbons, Aromatic; D012997:Solvents; D014867:Water; D000096:Acetone