Method for quantitative determination of anions
Abstract
Abstract A METHOD FOR THE DETERMINATION OF ANIONS IN SOLUTION BY MEANS OF ION EXCHANGE COMPRISING ADDING TO A SOLUTION, PREFERABLY AN AQUEOUS SOLUTION CONTAINING AN ANION IN UNKNOWN QUANTITY TO BE ANALYZED, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF QUATERNARY ALIPHATIC AMMONIUM PICRATES HAVING A TOTAL OF AT LEAST 30 CARBON ATOMS, PREFERABLY DISSOLVED IN AN IMMICIBLE ORGANIC SOLVENT, THEREBY TO FORM BY ION EXCHANGE THE CORRESPONDING QUATERNARY AMMONIUM COMPOUND OF SAID ANION TO BE ANALYZED AND TO RELEASE A CORRESPONDING AMOUNT OF PICRATE ANION. SUITABLY TWO LAYERS ARE FORMED UPON MIXING AND THE QUATERNARY AMMONIUM COMPOUND OF SAID UNKNOWN ANION BECOMES DISSOLVED IN THE ORGANIC SOLVENT, WHILE SAID RELEASED PICRATE ION BECOMES DISSOLVED IN THE AQUEOUS PHASE. KNOWN TECHNIQUES SUCH AS OPTICAL METHODS ARE EMPLOYED TO DETERMINE THE AMOUNT OF RELEASED PICRATE ION, WHICH IS A MEASURE OF THE AMOUNT OF ORIGINALLL UNKNOWN ANION TO BE ANALYZED.
Inventors
- 👤 A Brandstrom
- 👤 K Molndal
- 👤 U Junggren
- 👤 K Kylberg
Bibliographic Details
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