FIELD: spectral analyses. SUBSTANCE: method involves ashing of microelements in heated quartz vessel with weighing bottles. During ashing, gaseous entrainment products are fed to spectrum exciting source from mineralizer mounted in immediate contact with this source; introduced into it simultaneously from atomizer is synthesizing smoke containing metered amount of steams of analyzed impurities fed to spectrum excitation source through axial part of mineralizer; calibration curve showing analytical signal as function of trace impurity content in smoke is constructed and then controlled biological object is mineralized at the same time atomizing idle sample; after that, microelement content of exit smoke is found from calibration curves constructed earlier. Device implementing this method has heated quartz vessel with changeable quartz weighing bottles holding objects being analyzed. Quartz vessel is cylindrical in shape comparable with weighing bottles, its top part being dome with axial inlet hole and bottom part functions as inlet bore. Heater is placed on outer surface of vessel; weighing bottle is made in the form of capsule holding cylindrical external and internal gauzes with flat gauze between them; all gauzes are joined together by means of bottom cup provided with channel whose diameter follows diameter of internal gauze; this channel communicates with atomizer which has discharge chamber accommodating graphite electrodes; diameters of mineralizer and atomizer vessels are relatively comparable; atomized specimen is placed in bottom electrode crater; axes of capsule gauzes coincide with atomizer electrode axis and with axis of circle mounting pointed ends of spectrum excitation source electrodes; atomizer and mineralizer are in immediate contract to each other through split joint. EFFECT: improved efficiency of process due to determining microelement content in entrainment products when ashing biological objects. 2 cl, 1 dwg
