6533b829fe1ef96bd128a63c

RESEARCH PRODUCT

Supported liquid membrane extraction ofglyphosate metabolites

subject

description

Use of the supported liquid membrane (SLM) technique for (aminomethyl)phosphonic acid (AMPA) extraction is presented. For the extraction of this analyte a suitable SLM system involves a liquid membrane containing Aliquat 336 – a cationic carrier that facilitates AMPA transport. The extraction of this compound, as in the case of glyphosate, is dependent on the donor phase pH and the concentration and type of counter‐ion in the acceptor phase, although some differences are also observed. In both cases the transport mechanism is counter‐coupled transport in which the driving force of mass transport over the membrane is created by the gradient of chloride anions from the acceptor to donor phase.