HEADSPACE SOLID-PHASE MICROEXTRACTION WITH A NOVEL FLUORINATED POLYANILINE-BASED COATING FOR RAPID DETERMINATION OF TRACE POLYBROMINATED DIPHENYL ETHERS (PBDES) IN WATER AND MILK SAMPLES
Novel polyaniline (PANI) electrodeposited in the presence of fluorinated organic acid was applied as a new conductive polymer based solid-phase microextraction (SPME) fiber candidate. A method of headspace solid-space microextraction followed by gas chromatography (HS-SPME-GC) in the assistance of the novel fluorinated polyaniline-based coating was set up for the rapid determination of trace Polybrominated Diphenyl Ethers (PBDEs) in water and milk. The parameters including extraction mode, extraction temperature and time, headspace volume and ionic strength were investigated for optimization of HS-SPME performance. The experimental results under optimized conditions show that the linear ranges were 1-4000 ng/L (BDE-154 and BDE-153 were 1-3000 ng/L and 1-2500 ng/L) with satisfactory correlation coefficiency (R >0.99). The detection limit (S/N=3) was between 0.10 and 0.30 ng/L. The relative standard deviations for the determination of studied compounds were below 8.5％ (n=7). Compared to commercial 100 μm-PDMS fiber, the extraction efficiency of self-prepared polyaniline fiber was better. The proposed method has been successfully applied to the determination of PBDEs in river water and milk, and the recoveries ranges were above 90％ and 80％, respectively.
Sun C Zhang J Wang YH Yang SG
State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210093,China
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）