Abstract:
The present invention relates to a device and an arrangement for selective solvent evaporation from a liquid feed, the feed comprising one or more components diluted in at least a first solvent or a solvent blend, comprising: a) a first tubular vessel having a distal end or a channel suitable for the formation of a droplet of a first volume, at an inflow rate n, at the tip or in the lumen of the tubular vessel, and b) means for subjecting the droplet to a solvent removal step at an evaporation rate r2 to evaporate at least part of the first solvent or solvent blend, to accumulate the components in the feed in the droplet during the evaporation process at an accumulation rate r3, to obtain a concentrated feed volume in a concentrated droplet, wherein the evaporation and/or inflow rates are continuously adjusted to achieve a desired accumulation rate. The invention further relates to a method for selective solvent removal from an analyte mixture obtained in a chromatographic separation process.
Abstract:
The present invention relates to a process for the electro extraction of molecules from a moving fluid donor phase into an acceptor phase, comprising the steps of: providing an electrically conductive donor phase moving at a first flow velocity and in electrically conductive contact with a first electrode, providing an electrically conductive acceptor phase in direct contact and immiscible with the donor phase, in electrically conductive contact with a second electrode; and providing a supporting or confining phase guide pattern to keep a defined interface between donor phase and acceptor phase, and (d) applying an electrical field between the first and the second electrode.
Abstract:
The present invention relates to a droplet receiver, comprising a receptacle for receiving a droplet, a fluid conduit connected at a first end thereof to the droplet receptacle thereby providing a course within which the droplet received in the droplet receptacle moves, the conduit at its distal end in communication with a reservoir, and a fluid layer wetting the internal walls of the receptacle and conduit in such a way as permit reception of the droplet without loss of the received droplet due to wetting of the internal receptacle and conduit walls.
Abstract:
The present invention relates to a device and an arrangement for selective solvent evaporation from a liquid feed, the feed comprising one or more components diluted in at least a first solvent or a solvent blend, comprising: a) a first tubular vessel having a distal end or a channel suitable for the formation of a droplet of a first volume, at an inflow rate n, at the tip or in the lumen of the tubular vessel, and b) means for subjecting the droplet to a solvent removal step at an evaporation rate r2 to evaporate at least part of the first solvent or solvent blend, to accumulate the components in the feed in the droplet during the evaporation process at an accumulation rate r3, to obtain a concentrated feed volume in a concentrated droplet, wherein the evaporation and/or inflow rates are continuously adjusted to achieve a desired accumulation rate. The invention further relates to a method for selective solvent removal from an analyte mixture obtained in a chromatographic separation process.