Quantitative analysis by solid-phase microextraction in nonequilibrium situations - Rapid determination of pollutant compounds (PAHs) in water
- 化学化工－已发表论文 
Solid-phase microextraction technique has the advantages of a high efficiency, sensitivity, simple operation and solvent free. An optical fiber coated with 100 mu m polydimethylsiloxane is used to extract 10 PAHs. Since the absorption rate is stable within 60 min before equilibrium, the quantitative analysis may be realized in nonequilibrium situations. The linear concentrations range from 0.1 mu g/L to 100 mu g/L, the detection limits are in the range of 0. 01-0. 03 mu g/L, the recoveries are within 80% and 100%, and relative standard deviatants are below 20% for these PAHs.