Preparation of novel polydimethylsiloxane solid-phase microextraction film and its application in liquid sample pretreatment

文献类型： 外文期刊

第一作者： Wei, Fang

作者： Wei, Fang;Dong, Xu-Yan;Li, Yan-Hua;Chen, Hong;Zhang, Fang-Fang;Liao, Hui

作者机构：

关键词： Film extraction;Gas chromatography-electron capture detection;Organochlorine pesticides;Polydimethylsiloxane;Water analysis

期刊名称：JOURNAL OF SEPARATION SCIENCE （ 影响因子：3.645； 五年影响因子：2.943 ）

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收录情况： SCI

摘要： In this paper, an extraction approach based on the use of a novel polydimethylsiloxane (PDMS) film as the extraction medium was described. Two kinds of PDMS films with smooth surface and frosted surface were prepared and were practically evaluated for extraction. A model analytical problem, the determination of organochlorine pesticides in water samples, was selected for practical evaluation of the film extraction procedure by direct extraction and solvent desorption, followed by gas chromatography (GC) analysis with electron capture detection (ECD). The main variables affecting the extraction process such as the extraction time, the extraction temperature, the elution conditions, etc. were studied. The method was characterized on the basis of its linearity, precision, and limits of detection. The novel approach was sensitive and precise enough for the detection of the target analytes in the low nanogram per liter range using 5mL of sample. In fact, limits of detection ranging from 0.77 to 10.25ng/L were obtained. Compared with the solid-phase microextraction (SPME) fiber, the robust extraction film has a large extraction capacity, low cost of preparation. Besides, owing to the simplicity of the extraction procedures, in-site sample preparation for environmental monitor may be realized.

分类号： O6

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