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687 results about "Water trap" patented technology

Enrichment analysis instrument of carbon and nitrogen of greenhouse gases of CO2 and N2O

InactiveCN103424462AEnrichment is complete and fastIncreased Gas Test SensitivityPreparing sample for investigationMaterial analysis by electric/magnetic meansAssayWater trap
The invention discloses an enrichment analysis instrument of carbon and nitrogen of the greenhouse gases of CO2 and N2O. A greenhouse gas sample collected by a sampling tube is led through a sample guiding valve under the He gas, is dehydrated by an electron cold trap, undergoes enrichment and transferring in a liquid nitrogen cold trap, undergoes separation by a chromatographic column and dehydrating by a water trap and is led into a gas isotope mass spectrometer through an opened shunting port for being detected. The enrichment analysis instrument has the port which is directly connected with an isotope mass spectrometer mainframe, is an independent accessory device of the isotope mass spectrometer and carries out assay determination on isotope abundance of the carbon and the nitrogen of the greenhouse gases of CO2 and the N2O which are greenhouse gases at the same time. The gas is transferred from a cold trap T1 to a cold trap T2 through conversion of gas-carrying flow and by changing a freezing state of the target gas in the traps. Meanwhile, other impurity gases which are captured by a freezing gas are released and thus, good chromatographic peak shapes and higher purity of the sample are achieved and the testing precision is improved.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE

Enrichment analyzer for carbon and hydrogen elements in greenhouse gas CH4

ActiveCN103743846AGuaranteed purityEliminate the effects of humidityComponent separationMass spectrometryIsotope
The invention discloses an enrichment analyzer for carbon and hydrogen elements in greenhouse gas CH4. Guiding in a greenhouse gas sample collected by a sample pipe at the presence of gas He by a sample guide valve; removing CO in air by a chemical trap; removing other miscellaneous gases by a pre-refrigerating cold trap, entering an oxidizing furnace, oxidizing into CO2 and H2O; enriching and transferring the generated CO2 in a liquid nitrogen cold trap; separating by a chromatographic column, adsorbing and dewatering by a water trap; guiding into a gas isotope ratio mass spectrometer by a shunt interface to detect; releasing the generated H2O by a water collecting cold trap to enter a Cr reaction furnace; guiding the generated H2 after reaction into the gas isotope ratio mass spectrometer by the open shunt interface to detect. The enrichment analyzer provided by the invention is provided with an interface directly connected with a host machine of the isotope ratio mass spectrometer, is an independent isotope mass spectrometer accessory device, meanwhile analyzes and determines the enrichment of carbon and hydrogen elements of the greenhouse gas CH4 and the isotope abundance; a target gas is purified and converted by utilizing a cold trap combination; the purity of a sample entering the mass spectrum is ensured; oxygen is timely and automatically supplied to the oxidizing furnace, and the oxidation capability of CuO is kept.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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