Integrated gas-liquid separator

Abstract

The invention discloses an integrated gas-liquid separator. The integrated gas-liquid separator comprises a primary gas-liquid separator and a secondary gas-liquid separator, wherein the primary gas-liquid separator comprises a separating bottle A, a U-shaped sinking tube and a separating bottle B; the lower ends of the separating bottle A and the separating bottle B are communicated through the U-shaped sinking tube; a gas-liquid mixture inlet is formed in the upper part of the separating bottle A; a liquid outlet is formed in the lower part of the separating bottle B; the liquid outlet is positioned under the gas-liquid mixture inlet; the upper end of the separating bottle A is communicated with one end of the secondary gas-liquid separator; the other end of the secondary gas-liquid separator is sealed; a gas-phase outlet is formed in the secondary gas-liquid separator. According to the integrated gas-liquid separator disclosed by the invention, separation of a gas-liquid mixture is enabled to be more stable, short-term noise of a detection signal is reduced, the detection limit of an instrument is reduced, and a fluorescence quenching phenomenon is effectively avoided.

Description

technical field [0001] The invention relates to a gas-liquid separator, in particular to a gas-liquid separator which can be used in an atomic fluorescence spectrometer. Background technique [0002] Atomic fluorescence photometer is an analytical instrument designed based on the principle that atoms can emit fluorescence under the excitation of resonance light radiation. Due to the high sensitivity of atomic fluorescence photometer (it can be directly applied to ppb or sub-ppb level elemental analysis), repeatability With good performance and simple structure, it has become a very effective and practical analysis method in our country, and it is very popular in laboratory element detection. [0003] At present, atomic fluorescence photometers mostly use the hydride generation method to atomize elements. The solution of the element to be measured reacts with a reducing agent under acidic conditions to form a gaseous hydride of the element. The gas-liquid mixture of the gaseo...

AI Technical Summary

Problems solved by technology

[0004] At present, the vast majority of atomic fluorescence photometers use a single-arm one-stage gas-liquid separator, that is, the inlet of the gas-liquid mixture and the liquid outlet are located on a separation bottle. Although this design method is simple in structure, due to the The gas-liquid mixture will form pellets that are not easy to disperse, and a part of the gas will be brought into the bottom of the separation bottle and discharged through the liquid outlet, so it will cause the loss of gaseous hydride and finally significantly reduce the sensitivity of the instrument

In addition, the first-stage gas-liquid separator and the second-stage gas-liquid separator of the common atomic fluorescence photometer adopt the design method of separation elements, and the middle of the two is connected by a flexible conduit with good chemical inertness. This method makes the structure scattered and It is not easy to fix, especially for online instruments that require on-site use.

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