Two-step solvent extraction flow injection system for the determination of anionic surfactants by spectrophotometry

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	Two-step solvent extraction flow injection system for the determination of anionic surfactants by spectrophotometry
	Fan, SH; Fang, ZL
刊名	FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
	1997
卷号	357 期号:4 页码:416-419
ISSN号	0937-0633
英文摘要	An automated how injection procedure for the determination of anionic surfactants with two-step extraction was developed, based on the official methylene blue method. A washing step was used for on-line treatment of the extracted products with methylene blue to eliminate interferences. An improved gravitational phase separator was used to overcome the limitations of the membrane separator, and an effective separation of the two phases was performed by gravity separation in a conical cavity constructed of PTFE and stainless steel. Use of PTFE pump tubing allowed reliable and reproducible withdrawal and propulsion of organic extractant at low how-rates. The calibration graphs were linear up to 6.0 mg/l of sodium dodecyl sulfonate in aqueous solution when 100 mu l of sample was injected, a relative standard deviation of 4.6% (n = 7) was achieved. The recoveries of the procedure were in the range of 89-107%. The results obtained for anionic surfactants in waste water samples agreed well with those obtained by the standard methylene blue batch method.
学科主题	Chemistry, Analytical
语种	英语
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55675]
专题	沈阳应用生态研究所_沈阳应用生态研究所
推荐引用方式 GB/T 7714	Fan, SH,Fang, ZL. Two-step solvent extraction flow injection system for the determination of anionic surfactants by spectrophotometry[J]. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,1997,357(4):416-419.
APA	Fan, SH,&Fang, ZL.(1997).Two-step solvent extraction flow injection system for the determination of anionic surfactants by spectrophotometry.FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,357(4),416-419.
MLA	Fan, SH,et al."Two-step solvent extraction flow injection system for the determination of anionic surfactants by spectrophotometry".FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 357.4(1997):416-419.