Extraction rate in liquid-liquid segmented flow injection analysis

Autor:	Folke Ingman, Lage Nord, B. Karlberg, Lars-Göran Danielsson, Kenneth Bäckström
Rok vydání:	1987
Předmět:	Flow injection analysis Chemistry Extraction (chemistry) Biochemistry Analytical Chemistry Physics::Fluid Dynamics Flow system Flow velocity Phase (matter) Miniaturization Environmental Chemistry Liquid liquid Inner diameter Composite material Spectroscopy
Zdroj:	Analytica Chimica Acta. 194:221-233
ISSN:	0003-2670
DOI:	10.1016/s0003-2670(00)84775-3
Popis:	The extraction mechanism in liquid-liquid segmented flow-injection systems is investigated. A film is formed on the tubing wall by the phase with the highest affinity to the tubing material. This film surrounds the segments of the other phase. To a great extent the extraction takes place at the interface of this film. The extraction rate is influenced by the segment length, the inner diameter of the tubing and the flow velocity. Short segments, small inner diameter and high linear flow velocity lead to a high extraction rate. These findings indicate that miniaturization of the flow system will lead to faster extraction and to decreased sample-zone broadening.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e5740509ad0cf021fb84d64a2bd23fa7 https://doi.org/10.1016/s0003-2670(00)84775-3 Zobrazit plný text záznamu