title: Analysis of polycyclic aromatic hydrocarbons in sediment reference materials by microwave-assisted extraction.
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.
authors.affiliation: Chemistry Department, National Kaohsiung Normal University, Taiwan, ROC. shuyy@nknucc.nknu.edu.tw
authors.forename: Y Y
authors.initials: YY
authors.lastname: Shu
authors.forename: R C
authors.initials: RC
authors.lastname: Lao
authors.forename: C H
authors.initials: CH
authors.lastname: Chiu
authors.forename: R
authors.initials: R
authors.lastname: Turle
mesh_terms: 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
chemical_list: D003510:Cyclohexanes; D006586:Hexanes; D006841:Hydrocarbons, Aromatic; D012997:Solvents; D014867:Water; D000096:Acetone