Specific N2O absorption tube

The utility model discloses a specific N2O absorption tube comprising a cylindrical absorption tube body and absorbing filler which is arranged in the tube body. Both ends of the absorption tube body are provided with tubular connecting nut so as to be connected with a gas circuit of an analyzing instrument. The absorbing filler comprises porous ceramic particles and glass wool, the porous ceramic particles of the absorption filler are fired from porcelain clay with diatomite as the filler, the average diameter of the porous ceramic particles is 2.5 mu m, and the porosity is 39.4%. The specific N2O absorption tube is applicable to blowing-capturing devices which pre-treat and enrich N2O which is solved and stored in water, has quite good gas permeation rate and compressive strength, and has the compressive strength of up to 11.62MPa. The specific N2O absorption tube solves the main constraints in the enrichment analysis of the N2O dissolved and stored in the water, and is a sample pre-treating part which has