Abstract: The present application relates to processes for modifying the distribution of a compound in a solution comprising drawing the solution comprising the compound into an electroseparation syringe comprising a syringe barrel, a plunger and electrodes positioned to apply a voltage across solution contained in the syringe barrel, and applying a voltage across the solution in the syringe barrel to modify the distribution of the compound within the solution contained in the syringe barrel. The process may be performed as a part of an analytical process.

Abstract: A device for extracting and concentrating a target analyte including a sample channel that receives the sample, a separation channel, a waste channel, a first junction between the sample channel and the separation channel, and, a second junction between the separation channel and the waste channel. The first junction selectively transports a first group of analytes, including target analytes, from the sample channel to the separation channel in accordance with a size of a first free transport region of the first junction. The second junction selectively transports a second group of analytes from the separation channel to the waste channel in accordance with a size of a second free transport region of the second junction, the second group being a subset of the first group, so as to concentrate a number of the target analytes in the separation channel.