liquid nitrogen refrigeration pre-concentration GCC600L
★VOCs, trace sulfide laboratory pre-concentration system ★Three-stage cold trap for liquid nitrogen refrigeration ★Liquid nitrogen is precisely controlled and the dosage is sma ★Special adsorption analysis material ★Patent focus technology ★Product performance indicators meet method requirements
Product Presentation
Use stainless steel tanks, vacuum glass bottles, air bags, etc. treated with inner wall inertization to collect ambient air and pollution source waste gas samples, which are dehydrated by liquid nitrogen cold trap, enriched and concentrated, focused, and instantaneous thermal analysis. After that, they are separated by gas chromatography and mass spectrometry or other detectors perform detection. Qualitatively compare the mass spectra of standard materials and retention time, and quantitatively analyze the concentration of each component by internal standard method or external standard method. It meets the following standards:
Product Features
Three-stage dehydration, trapping and focusing cold trap using liquid nitrogen refrigeration, after dehydrated, enriched and concentrated, purifyed, and further focused and concentrated large-volume samples, instant thermal analysis and injection into GC-MS or GC-FID, FPD, SCD Separation analysis. The use of full-flow silanization inertness and full-process non-cold-spot heat preservation technology makes the system better linear, lower detection limit, and high precision. Advanced segmented liquid nitrogen control, less liquid nitrogen consumption. Product performance indicators meet the requirements of various standards. Can be equipped with silanization dynamic dilution, automatic control and quality assurance.
Application Fields
(1)(1) "Determination of 8 sulfur-containing organic compounds such as fixed pollution source exhaust gas, methyl mercaptan, etc. Air bag sampling-preconcentration/gas chromatography-mass spectrometry" (HJ 1078-2019) Typical standard spectrum
（3）C2~C12 hydrocarbons, volatile halogenated hydrocarbons, oxygen-containing volatile organic compounds, a total of 116+1 components. Typical standard spectrum
