Pre concentration system

The pre concentration system is a crucial pre-treatment equipment in modern trace gas analysis, specifically designed to capture, enrich, and purify extremely trace amounts of volatile organic compounds in air or samples, making subsequent precision analysis possible.

Pre concentration system is a sample pretreatment device used for trace gas analysis. Its core function is to capture, enrich, and purify extremely low concentrations of test components in gas samples through physical processes of adsorption and desorption, thereby greatly improving the detection sensitivity and accuracy of subsequent analytical instruments such as gas chromatography-mass spectrometry.

The main purpose of Nutech pre concentration system is:

The 6600 online pre concentration analyzer developed by Nutech, combined with quadrupole mass spectrometry, enters the detector for analysis through front-end low-temperature composite iterative enrichment and concentration pretreatment, achieving online continuous monitoring of more than 100 VOCs. Widely used for air quality monitoring (environmental monitoring stations, meteorological stations, etc.), air quality monitoring around pollution source factories or chemical industrial parks.

Performance characteristics of Nutech pre concentration system:

(1) The low-temperature composite iterative enrichment pre concentration technology effectively enriches and concentrates the target compound to be tested, and quickly performs thermal analysis, greatly improving the detection limit and meeting the detection needs of low or ultra-low concentration air VOC components.

(2) Deep cold low-temperature water treatment technology efficiently removes interference such as water and CO2 in the sample air, greatly improving peak shape and extending the lifespan of chromatographic columns and ion sources.

(3) The integrated design of water-cooled trap and enriched cold trap, shorter sample pipeline and constant temperature are beneficial for improving component recovery.

(4) It has independent internal and external standard interfaces, can automatically collect internal and external standard gases, has reference analysis methods (editable), supports two quality control modes: online standard addition quality control and Suma tank sampling offline analysis quality control, and meets the requirements of national standard online environmental air monitoring quality control.