Headspace liquid-phase microextraction of trihalomethanes in drinking water and their gas chromatographic determination
文献类型：期刊论文
| 作者 | Zhao, RS; Lao, WJ; Xu, XB |
| 刊名 | TALANTA
 |
| 出版日期 | 2004 |
| 卷号 | 62期号:4页码:751-756 |
| 关键词 | trihalomethanes GC-ECD drinking water headspace liquid-phase microextraction |
| 英文摘要 | In the present work, a novel method for the determination of trihalomethanes (THMs) such as chloroform, dichlorobromomethane, chlorodibromomethane and bromoform in drinking water has been described. It is based on coupling headspace liquid-phase microextraction (HS-LPME) with gas chromatography-electron capture detector (GC-ECD). A microdrop of organic solvent at the tip of a commercial microsyringe was used to extract analytes from aqueous samples. Three organic solvents-xylene, ethylene glycol and 1-octanol-were compared and 1-octanol was the most sensitive solvent for the analytes. Extraction conditions such as headspace volume, extraction time, stirring rate, content of NaCl and extraction temperature were found to have significant influence on extraction efficiency. The optimized conditions were 15 ml headspace volume in a 40 ml vial, 10 min extraction time and 800 rpm stirring rate at 20degreesC with 0.3 g ml(-1) NaCl. The linear range was 1-100 mug l(-1) for THMs. The limits of detection (LODs) ranged from 0.15 mug l(-1) (for dichlorobromomethane and chlorodibromomethane) to 0.4 mug l(-1) (for chloroform); and relative standard deviations (RSD) for most of THMs at the 10 mug l(-1) level were below 10%. Real samples collected from tap water and well water were successfully analyzed using the proposed method. The recovery of spiked water samples was from 101 to 112%. (C) 2003 Elsevier B.V. All rights reserved. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000220132100015 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23450]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, RS,Lao, WJ,Xu, XB. Headspace liquid-phase microextraction of trihalomethanes in drinking water and their gas chromatographic determination[J]. TALANTA,2004,62(4):751-756. |
| APA | Zhao, RS,Lao, WJ,&Xu, XB.(2004).Headspace liquid-phase microextraction of trihalomethanes in drinking water and their gas chromatographic determination.TALANTA,62(4),751-756. |
| MLA | Zhao, RS,et al."Headspace liquid-phase microextraction of trihalomethanes in drinking water and their gas chromatographic determination".TALANTA 62.4(2004):751-756. |
入库方式： OAI收割
来源：生态环境研究中心
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