SOLID PHASE EXTRACTION FOR DETERMINING ORGANIC COMPOUNDS IN HIGH IONIC STRENGTH SOLUTIONS
作者:
J. Ward Hills,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1997)
卷期:
Volume 15,
issue 2
页码: 347-359
ISSN:0736-6299
年代: 1997
DOI:10.1080/07366299708934482
出版商: Taylor & Francis Group
关键词: Liquid-liquid extraction;solid phase extraction;high ionic strength
数据来源: Taylor
摘要:
Extraction techniques for semi-volatile organic compounds from caustic and high ionic strength solutions are presented. It is demonstrated that simple liquid-liquid extraction from a high ionic strength aqueous solution can allow inorganic ions to partition from the aqueous phase into the organic extraction phase. The ability of solid-phase extraction (SPE) adsorbents to separate organic target compounds from a sample, without significant carry-over of inorganic material, is compared to that of Liquid-liquid extraction. The most useful SPE media was a commercially available alumina substrate coated with a robust non-polar phase. Extractions of three compound classes, are presented: aromatic, alkyl hydrocarbons and alkyl phosphates. Extraction yields ranged from 42 to 97.6% (6-12% RSD). The range of yields for each chemical class was 7.5-79.9%, 14.3-68.3% and 91.1-97.6% for the aromatic, alkyl hydrocarbons and alkyl phosphate compounds respectively.
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