分析测试学报2026，Vol.45Issue(2)：420-427,8.DOI:10.12452/j.fxcsxb.25070501
基于空气动力学透镜的在线热解吸进样系统的研制与初步测试
Development and Preliminary Testing of an Online Thermodesorption Sampling System Based on Aerodynamic Lens
摘要
Abstract
This study developed an online aerosol thermodesorption sampling system based on an aerodynamic lens.The system primarily consists of a gas-phase denuder,a high-throughput wide-range lens,and a thermodesorption module.The lens sampling system,optimized through fluid sim-ulation,achieves high-flow sampling at 575 mL/min and a wide particle transmission range of 0.1-13.0 μm.Experimental results demonstrate that the gas-phase denuder achieves 99.74％adsorption efficiency for volatile gases and maintains particle transmission efficiency ranging from 93.56％to 99.70％for particles within the 100-500 nm size range,effectively eliminating VOCs interference in organic aerosol samples while minimizing particle transmission losses.The lens thermodesorption sampling system was coupled with a single photon ionization time of flight mass spectrometer(SPI-MS)to conduct online detection and analysis of smoke particles from different biomass combustion sources,including cigarettes,moxa sticks,and mosquito coils.This work demonstrates the appli-cation capability of this combined system for detecting particle-phase VOCs of biomass combustion products.The aerosol sampling system can be used for a variety of traditional vacuum-ionization mass spectrometers,and has a broad application prospect.关键词
气溶胶/挥发性有机物/空气动力学透镜/真空电离源质谱仪Key words
aerosol/volatile organic compounds/aerodynamic lens/vacuum ionization source mass spectrometer分类
化学化工引用本文复制引用
陈漫琪,卓泽铭,郑义炯,张国华,李梅,李雪,李磊..基于空气动力学透镜的在线热解吸进样系统的研制与初步测试[J].分析测试学报,2026,45(2):420-427,8.基金项目
国家重点研发计划青年科学家项目(2022YFF0705400) （2022YFF0705400）
暨南大学科协青年科技人才托举工程项目(21623205) （21623205）
