Membrane Desolvation

Elemental Scientific supplies two membrane desolvation modules constructed from 2 fluoropolymer membranes. Membrane desolvation is required to remove the residual solvent exiting the Apex which has not been removed by Peltier desolvation.

Polyatomic ion interferences, such as oxides, hydrides and others may form when oxygen or hydrogen derived from water or other solvents combine with species present in the sample. In many cases these interferences limit the accuracy or precision of ICP-MS determinations.

Two models of membrane desolvator are available for the Apex:

ACM - Temperature stabilized Nafion® membrane

Spiro TMD - Heated PTFE membrane

Each module is easily mounted to the exit port of the Apex Q or Apex HF. This feature allows the Apex to be used either with or without membrane desolvation to best suit specific analytical applications.

All membrane desolvation units attach directly and easily to the Apex Inlet System
All membrane desolvation units attach directly and easily to the Apex Inlet System

CeO:Ce ratio, standard inlet vs. ApexHF/ACM/Spiro

Schematic of processes involved in membrane desolvation



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