METHOD OF LIQUID SAMPLING FOR ANALYSIS OF ADMIXTURES IN LIQUID AND DEVICE INTENDED FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: analytical chemistry. SUBSTANCE: method includes immersion of vessel in liquid, filling of vessel with liquid by means of vacuum, removal of liquid sample and performance of analysis. Simultaneously with filling the vessel with liquid, sorption of admixtures from definite volume of liquid is performed on absorbing substance with subsequent carrying out of analysis. Device intended for method realization has closed vessel fitted with hold- down member and intake end-piece which has sealing element and is provided with changeable tube filled with absorbing substance, float with membrane valve and pipe union. One end of pipe union serves for connection of vacuum pump hose and other end is used as membrane valve seat. Pipe union is made for axial motion. EFFECT: provision for proximate analysis without conservation of liquid samples. 3 cl, 2 dwg