請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/35058
標題: Determination of chlorophenols in soil samples by microwave-assisted extraction coupled to headspace solid-phase microextraction and gas chromatography-electron-capture detection
作者: Wei, M.C.
鄭政峰
Jen, J.F.
關鍵字: soil
extraction methods
environmental analysis
chlorophenols
phenols
organochlorine compounds
performance liquid-chromatography
mass-spectrometry
water samples
volatile
hydrocarbons
pollutants
chemistry
phenols
air
期刊/報告no:: Journal of Chromatography A, Volume 1012, Issue 2, Page(s) 111-118.
摘要: Microwave-assisted extraction coupled to headspace solid-phase microextraction was studied and applied for one-step in-situ sample preparation prior to analysis of chlorophenols (CPs) in soil samples. The CPs in soil sample were extracted into the aqueous solution and then directly onto the solid-phase microextraction (SPME) fiber in headspace under the aid of microwave irradiation. After being desorbed from SPME fiber in the GC injection port, CPs were analyzed with a GC-electron-capture detection system. Parameters affecting the extraction efficiency such as the extraction solutions, the pH in the slurry, the humic acid content in the soil, the power and the irradiation time of microwave as well as the desorption parameters were investigated. Experimental results indicated that the extraction of a 1.0 g soil sample with a 6-ml aqueous solution (pH 2) and a polyacrylate fiber under the medium-power irradiation (132 W) for 9 min achieved the best extraction efficiency of about 90% recovery and less than 10% RSD. Desorption was optimal at 300 degreesC for 3 min. Detection limits were obtained at around 0.1-2.0 mug/kg levels, The proposed method provided a simple, fast, and organic solvent-free procedure to analyze CPs from soil sample matrix. (C) 2003 Published by Elsevier B.V.
URI: http://hdl.handle.net/11455/35058
ISSN: 0021-9673
文章連結: http://dx.doi.org/10.1016/s0021-9673(03)01098-7
顯示於類別:化學系所

文件中的檔案:
沒有與此文件相關的檔案。


在 DSpace 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。