| 摘要 |
FIELD: analytical chemistry. SUBSTANCE: invention is related to analytical chemistry of gas phases with use of piezoquartz method of micro weighing and can be employed for vapor-phase analysis and control over state of gas effluents of factories of food, chemical, pharmaceutical and perfume industries. Cell for detection of gas phases for analysis comprises body of cylindrical shape made of stainless steel, cover with holder of modified piezoquartz resonator, excitation circuit and branch pipes. Excitation circuit is directly joined to holder and is made fast on cover that has male thread for screwing into body. Base of body carries branch pipe with plug. Branch pipe for injection of sample has extension piece fitted with polyurethane gasket, it is so arranged in side of body that symmetry axis of branch pipe for injection of sample is perpendicular to symmetry axis of detection cell and passes through center coinciding with plane of modified piezoquartz resonator. EFFECT: change of functioning conditions of detection cell, simplified design of cell, use of branch pipe for injection of samples, possibility of fast blow-through of cell, reduced time of detection and analysis of gas phases, increased measurement accuracy. 2 dwg, 1 tbl |
