V.I. Kapustin, S.A. Solntsev

The research of the ions organic compounds drift mobility under the atmospheric pressure air conditions represents the big scientific and practical interest for areas of plasma electronics and plasma chemistry, physical and analytical chemistry, analytical instrument designing, and developing of new types of drift-spectrometers. The research of surface ionization of nitrogen, sulfur, phosphorus and arsenic organic compounds and developing of the methods for definition of linear and nonlinear drift mobility parameters of it-s ions, and also creation of a database of the specified parameters for a modeling set of organic connections was the purpose in the given work. We made system of an ionic collector registration of a drift-spectrometer which included accumulation of a signal and its digital filtration from noise. It has allowed to lower effective level of noise with usual - an order 10 фА - to level 0,1 фА. As test substances at experimental researches the modeling set of organic connections in which nitrogen, sulfur, phosphorus and arsenic form chemical bonds of various types has been chosen. As a result of the spent researches the breadboard model of superficially- ionization drift-spectrometer, a technique of carrying out of measurements and processing of the experimental results is developed, allowing to define parameters of linear and nonlinear drift mobility of ions and parameters of a thermal desorption of organic connections from a material of the carrier of tests with use of one device. For a modeling set of organic connections on the basis of nitrogen, sulfurs, phosphorus and the arsenic reflecting the basic types of valency communications in organic connections, are experimentally defined values of linear and nonlinear drift mobility of ions of organic connections, and also parameters of a thermodesorption of organic connections. The developed technique allows to define in the uniform device to eight identification parameters of organic connections - three parameters and three signs on nonlinear drift mobility of ions of the organic connections, one parameter of linear drift mobility of ions of the organic connections, one parameter of a thermal desorption of organic connections