METHOD AND DEVICE TO VERIFY SUBSTANCE AVAILABILITY AND CHEMICAL COMPOSITION Russian patent published in 2009 - IPC G01N27/12 

FIELD: instrument making.

SUBSTANCE: invention relates to analytic instrument making, namely, to appliance designed to determine location of various substances. Proposed method comprises recording the selective variation in physical-chemical parametres of sensitive element built around the film made up of a mix of current-conducting polymers of polysilanoaniline, polyaniline and polystanumaniline. Aforesaid variation results from irradiating aforesaid sensitive element, the radiation flow being directed and fixed on analysed substance. Aforesaid flow is formed by, at least, two parallel electrostatic high-density flows, each representing a flow of charged particles that form current-conducting channels between steel anodes and graphite cathodes. The latter represent spearheads with sensitive element applied thereon. Voltage between anode and cathode makes 9 to 200 V, DC current strength makes 0.5 to 70 A. Concentrators are used to pull out aforesaid current-conducting channel. The invention covers the device to implement above described method.

EFFECT: higher selectivity, lower costs.

3 cl, 3 dwg