MICROMIXTURE DETECTOR AND METHOD OF MICROADMIXTURE DETECTION Russian patent published in 2013 - IPC G01N1/40 G01N27/62 

FIELD: chemistry.

SUBSTANCE: microadmixture detector contains desorption chamber, which forms zone of desorption and has casing, channel of sample supply for introduction of sample into desorption chamber and channel for exhaust of sample-capturing gas from desorption chamber. Channels of sample supply and gas exhaust are connected with desorption chamber in realisation of process of preliminary concentration of sample-capturing gas in desorption chamber of microadmixture detector by changing desorption chamber volume, which results in providing continuous supply and accumulation of sample. Method of analysis for microadmixture detector includes continuous supply of sample into desorption chamber of microadmixture detector, which forms desorption zone. Method also includes continuous exhaust of sample-capturing gas from desorption chamber and preliminary concentration of gas, which contains captured sample, in desorption chamber by changing desorption chamber volume, with continuous supply of sample into desorption chamber and continuous exhaust of sample-capturing gas.

EFFECT: reduction of probability of non-detecting substances and increase of detector sensitivity.

10 cl, 2 dwg