INTERFACE INJECTOR FOR DIRECT INTERFACING LIQUID CHROMATOGRAPH WITH GAS CHROMATOGRAPH Russian patent published in 2010 - IPC G01N30/46 

FIELD: physics.

SUBSTANCE: device has an outer case (1) with a first end part (1a) and a second end part (1b), as well as an intermediate section (1c) and an inner cavity in which there is a first inner chamber (2a) and a second inner chamber (2b). The device also has one first (3) passage from the first chamber (2a) to a waste removal pipe (8) and one second passage (4) from the second chamber (2b) to the outside of the injector. The device also has an inner pipe (5) lying in the inner cavity, a separation element (9, 11a) which grips the inner pipe (5) and separates the first inner chamber (2a) from the second inner chamber (2b). The inner chamber (5) has a first section (5a) lying in the first inner chamber (2a) and a second section (5b) lying in the second inner chamber (2b). The first section (5a) ends in at the first end (5c) with a first hole (5d) and the second section (5b) ends at the second end (5e) with a second hole (5g). The device also has an inner channel (5f) which passes between the first and second holes (5d, 5g). In the channel (5f) there is one absorbing material (6) and one inorganic wool material (7) lying in the first section (5a) of the inner pipe. The first end (5c) of the inner pipe (5) has holding apparatus (10a, 10b) for holding inorganic wool material (7), and the first hole (5d) of the inner pipe (5) is connected to the first passage (3) in the waste removal pipe (8) exclusively through the first inner chamber (2a).

EFFECT: possibility of designing interfaces having a simple structure which meet requirements for reliability, universality and automation possibility, more sensitive analysis using the interface injector for direct interfacing a liquid chromatograph with a gas chromatograph.

12 cl, 7 dwg