Planary microdoser for gas chromatography

FIELD: physics.

SUBSTANCE: planar microdoser for gas chromatography is performed on a flat aluminium plate, on the surface of which the channels for gas flow and the fixed volume dose are manufactured by microfilling. The plate is also fitted with three electrically operated pneumatic distributor 3/2, channel sealing flat glass provided with an adhesive. Furthermore, planar microdoser comprises a pneumatic pressure repeater in the carrier gas and sample gas lines.

EFFECT: increase precision is introduced for analysis of small sample volumes, providing direct input test sample splitless in the capillary, and in micro-settling exclusion column and gas pressure surge at the time of sample introduction.

2 cl, 1 dwg, 1 tbl

 



 

Same patents:

FIELD: physics.

SUBSTANCE: proposed device comprises unit of carrier gas preparation, sample feed assembly, two chromatographic columns, DC source, detector and results processing system, all said units being connected in series. Note here that one of the columns is connected with sample feed assembly, while the other one is connected with detector. Note also that second column is mounted between two flat parallel electrodes connected to DC source.

EFFECT: higher efficiency and selectivity.

1 tbl, 1 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: method comprises supplying of batched volumes of oil sample, standard material for comparison, and n-heptane by displacing them by the gas flow to the capillary column for chromatography. The pressure in the gas flow is higher than that at the inlet of the column. The device comprises batching cock, check valve in the gas line, and resistance in the line for discharging the gas. The valving members are made of pipes with plugs at the center and are interconnected through a gas cross-piece and vessel for batching the gas.

EFFECT: enhanced accuracy of determining hydrocarbons.

2 cl, 1 dwg, 1 tbl

The invention relates to analytical instrumentation and can be used for chromatographic analysis of gaseous and liquid substances at elevated pressures in various industries: chemical, oil, gas, petrochemical, metallurgy, medicine, biology, ecology, etc

The invention relates to gas chromatography

The invention relates to analytical instrumentation
Gas chromatograph // 2156457
The invention relates to gas chromatography and can be used to control the natural environment and monitoring for solution of ecological problems

Naturally crane // 2098810
The invention relates to the field of gas analysis, in particular, to devices volumetric dosing gas appliances gas analysis, including gas chromatograph, and can be used in various fields of science and technology related to gas analysis, mainly gas chromatography

FIELD: investigating or analyzing materials.

SUBSTANCE: method comprises supplying of batched volumes of oil sample, standard material for comparison, and n-heptane by displacing them by the gas flow to the capillary column for chromatography. The pressure in the gas flow is higher than that at the inlet of the column. The device comprises batching cock, check valve in the gas line, and resistance in the line for discharging the gas. The valving members are made of pipes with plugs at the center and are interconnected through a gas cross-piece and vessel for batching the gas.

EFFECT: enhanced accuracy of determining hydrocarbons.

2 cl, 1 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: proposed device comprises unit of carrier gas preparation, sample feed assembly, two chromatographic columns, DC source, detector and results processing system, all said units being connected in series. Note here that one of the columns is connected with sample feed assembly, while the other one is connected with detector. Note also that second column is mounted between two flat parallel electrodes connected to DC source.

EFFECT: higher efficiency and selectivity.

1 tbl, 1 dwg

FIELD: physics.

SUBSTANCE: planar microdoser for gas chromatography is performed on a flat aluminium plate, on the surface of which the channels for gas flow and the fixed volume dose are manufactured by microfilling. The plate is also fitted with three electrically operated pneumatic distributor 3/2, channel sealing flat glass provided with an adhesive. Furthermore, planar microdoser comprises a pneumatic pressure repeater in the carrier gas and sample gas lines.

EFFECT: increase precision is introduced for analysis of small sample volumes, providing direct input test sample splitless in the capillary, and in micro-settling exclusion column and gas pressure surge at the time of sample introduction.

2 cl, 1 dwg, 1 tbl

Up!