METHOD AND APPARATUS FOR THE SEPARATION OF PARTICLES

摘要

A method and apparatus for collecting and separating abiotic and/or biotic particles and/or chemicals in a liquid or gaseous sample. The apparatus includes a substrate (10) supporting at least one pair of electrodes (4, 6) and defining a fluid channel (8) over said electrodes. The electrodes (4, 6) are energised with at least two voltages having different predetermined frequencies which attract the particles, by dielectrophoresis, to the electrodes. By switching off one or more of the voltages, it is possible to selectively release one type of particle for subsequent collection and/or enumeration.