| 摘要 |
FIELD: chemistry.SUBSTANCE: claimed is method of measuring HNOconcentration in air, in which, in accordance with the invention, air, containing nitric acid vapours, is passed through cold reactor; current (background) concentration of NOin air is measured and its value is stored in microprocessor unit as C, then reactor is heated to temperature 250-350°C, concentration of NO, separated in the process of thermal HNOdecomposition, is measured, its value is stored in microprocessor unit as Cand concentration of nitric acid vapours in air in determined by specific formula. Also claimed is device for realisation of method, described above, which contains air-intake pipe (1), flow booster (5) for air pumping, sensor (4) for measuring NOconcentration in air and microprocessor unit (8) for control of device operation and memorising values of NOconcentration, in which, in accordance with the invention, reactor (2) with periodically heated catalyst is installed at inlet into air intake pipe (1).EFFECT: method improvement.4 cl, 2 dwg |
