FIELD: analysis of biological and chemical mixtures. SUBSTANCE: invention deals with analysis of mixtures of predominantly biological origin for content of biological and/or chemical components as well as mixtures whose parameters determine vital activity of biological objects. In correspondence with invention spatial position of selected component coupled by magnetic particles is set, magnetic particles are subjected to action of magnetic field and signal of magnetic induction used to evaluate content of determined component in mixture is recorded. Selected component is grouped in test volume. Variable magnetic field is employed and is spectrum is set at least on two frequencies. Signal is recorded on frequency that presents linear combination of these frequencies during time of action of magnetic field on magnetic particles. Technical result of process consists in rise of signal-to-noise ratio and correspondingly in increased measurement accuracy, in raised sensitivity and authenticity of obtained data with simultaneous reduction of expanses on analysis thanks to decreased number of necessary operations, time, number and dimensions of required equipment, in design of mobile, inexpensive high-productivity laboratories of mass survey, in enhanced functional flexibility of process and device. EFFECT: widened application range of process and device. 43 cl, 13 dwg
