Published December 1977 | Version v1
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Analytical and preparative separation of organic acids from water by extraction with trioctylamine

Creators

  • 1. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Radiochemie

Description

The extraction of pure organic acids and of humic and ligninsulfonic acid from water by a solution of trioctylamine in chloroform was investigated (technical grade amine = ALAMINE). Quantitative separation is achieved by double extraction with 5% ALAMINE at pH 3,5 - 4. The acids may be back-extracted with dilute sodium hydroxide solution. Procedures are described for the analytical extraction of water samples of 200 to 2.000 ml and for the flow-through processing of large water volumes. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Die Extraktion verschiedener reiner organischer Saeuren sowie von Huminsaeure und Ligninsulfonsaeure aus Wasser mit Trioktylamin (Techn. Produkt ALAMIN) in Chloroform wurde untersucht. Mit 5%-igem ALAMIN erreicht man bei pH 3,5 - 4 durch zweimaliges Extrahieren eine quantitative Abtrennung der Saeuren. Diese lassen sich durch verduennte Natronlauge rueckextrahieren. Arbeitsvorschriften zur analytischen Extraktion von Wasserproben mit 200 - 2.000 ml Volumen und zur praeparativen Extraktion grosser Wassermengen im Durchfluss werden angegeben. (orig.)

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Additional details

Additional titles

Original title (German)
Analytische und praeparative Abtrennung organischer Saeuren aus Wasser durch Extraktion mit Trioktylamin

Publishing Information

Imprint Pagination
27 p.
Report number
KFK--2529-UF

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
9416684
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CHEMICAL ANALYSIS; CHEMICAL PREPARATION; CHLOROFORM; EXTRACTION APPARATUSES; HUMIC ACIDS; ORGANIC ACIDS; PH VALUE; POLYSACCHARIDES; REVIEWS; SODIUM HYDROXIDES; SOLUTIONS; SOLVENT EXTRACTION; SULFONIC ACIDS; TOA; WATER
Descriptors DEC
ALKALI METAL COMPOUNDS; AMINES; CARBOHYDRATES; CHELATING AGENTS; DISPERSIONS; DOCUMENT TYPES; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXIDES; MIXTURES; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXYGEN COMPOUNDS; SACCHARIDES; SEPARATION PROCESSES; SODIUM COMPOUNDS; SYNTHESIS