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8405229 
Journal Article 
Measurement of chlorobenzenes and chlorophenols in fly ashes from MSWI using GC-ECD and LC-MS/MS 
Huang, J; Chen, J; Lu, S; Yan, J; Ni, M 
2017 
Huanjing Gongcheng Xuebao / Chinese Journal of Environmental Engineering
ISSN: 1673-9108 
Science Press 
11 
2 
1293-1299 
Chinese 
Chlorobenzenes and chlorophenols are very important pollutants generated in municipal solid waste incinerators, but little attention has been paid to the absorption of chlorobenzenes and chlorophenols by fly ash. A quantitative detection method for chlorobenzenes and chlorophenols in fly ash and other solids is proposed using ultrasound extraction combined with GC-ECD and LC-MS/MS. The experimentally optimized pretreatment process is as follows: a few drops of concentrated sulfuric acid are added to the fly ash, and, using n-hexane/acetone (1 : 1) as the extraction solvent, the solution is concentrated to 2 mL by rotary evaporation. This method leads to high recovery rates of tri-, tetra-, penta-, and hexachlorobenzenes and all chlorophenols. Real fly ash samples from municipal solid waste incinerators were investigated using this method. The concentrations of mono-, di-, tri-, and tetrachlorophenols in the fly ashes were below the quantitative detection limits, while the pentachlorophenol concentration and the tri-, tetra-, penta-, and hexachlorobenzene concentrations varied from 5~11 ng·g-1 and 3~70 ng·g-1, respectively. © 2017, Science Press. All right reserved. 
Chlorobenzenes; Chlorophenols; Flyash; Quantative detection; Ultrasonic extraction