Chromatographic apparatus for online enrichment of trace and ultra-trace components and method for analyzing trace and ultra-trace components using same
AssigneeAsicotech Company Limited
InventorsZhirong Gao, Yanjun Zhang
Life of this patent
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Abstract
A chromatographic apparatus for online enrichment of trace and ultra-trace components and an analytical method using the same. The apparatus includes an injection system, a vaporizing chamber, an enrichment system, a thermal box, a sample collection system, a focusing trap, a chromatographic analytical column system, a detector and an electronic control system. The method includes steps of sample enrichment, thermal desorption and back flushing, which are performed through a combination of a four-way valve and an electronic switch valve box.
Claims14
A chromatographic apparatus for online enrichment of trace and ultra-trace components, comprising:
- an injection system;
- a column compartment;
- a vaporizing chamber;
- a chromatographic analytical column system;
- a detector;
- an electronic pressure controller;
- an enrichment system;
- a focusing trap;
- a thermal box;
- a sample collection system;
- a four-way valve;
- and
- an electronic control system;
- wherein the injection system is connected to the column compartment;
- the vaporizing chamber, the chromatographic analytical column system and the detector are connected to the column compartment;
- and the chromatographic analytical column system is connected to the detector;
- the injection system is connected to the vaporizing chamber through the column compartment;
- the injection system is configured to inject a sample into the vaporizing chamber for vaporization;
- the enrichment system is connected to the vaporizing chamber through the column compartment and is also connected to the focusing trap;
- the enrichment system is configured to trap target components in a vaporized sample, and desorb and transfer the target components to the focusing trap;
- the four-way valve is provided in the thermal box;
- the four-way valve is connected to the enrichment system, the focusing trap, the electronic pressure controller and the sample collection system through the thermal box, respectively;
- the focusing trap is connected to the chromatographic analytical column system through the column compartment;
- the focusing trap is configured to focus the target components desorbed from the enrichment system and transport the focused target components to the chromatographic analytical column system for separation;
- and the target components separated by the chromatographic analytical column system are transferred to the detector for detection;
- the electronic control system is connected to the injection system, the column compartment, the vaporizing chamber, the chromatographic analytical column system, the detector, the electronic pressure controller, the enrichment system, the thermal box, the sample collection system, the focusing trap and an electronic switch valve box;
- and
- the chromatographic apparatus comprises an enrichment mode, a thermal desorption mode and a back flushing mode.
Dependencies are inferred from the claim text.