期刊
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
卷 370, 期 8, 页码 1096-1099出版社
SPRINGER-VERLAG
DOI: 10.1007/s002160100918
关键词
-
Benzene. toluene, ethylbenzene, three isomers of xylene. and cumene have been isolated and enriched from soil samples by a combination of water extraction at room and elevated temperature and heads pace-solid-phase microextraction before their gas chromatographic-inass spectrometric (GC-MS) determination. The conditions used for all stages of sample preparation and chromatographic analysis were optimized. Analytes sampled on a polydimethylsiloxane-coated solid-phase microextraction fiber were thermally desorbed in the split/splitless injector of a gas chromatograph (GC) coupled with a mass spectrometer (MS). The desorption temperature was optimized. The GC separation was performed in a capillary column. Detection limits were found to be of the order of ca. 1 ng g(-1). Relative recoveries of the analytes from soils were found to be highly dependent on soil organic-matter content and on compound identity: they ranged from ca 92 to 96% for sandy soil (extraction at room temperature) and from ca 27 to 55% for peaty soil (extraction at elevated temperature). A few real-world soil samples were analyzed; the individual monoaromatic hydrocarbon content ranged from below detection limits to 6.4 ng g(-1) for benzene and 8.1 for the total of p- + m-xylene.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据