The technical innovation of integrating the gold mesh sampling method into FTIR spectroscopy, along with its application in the domain of transportation-related pollution studies, signifies a noteworthy advancement in analytical capabilities

Beijing Institute of Technology, Beijing, China

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Abstract

Recently, Fourier transform infrared micro-spectroscopy (FTIR) has played a crucial role in the study of heterogeneous reactions in atmospheric chemistry. This includes research on aerosol hygroscopicity, nucleation kinetics, chemical composition analysis of aerosols, and heterogeneous chemical reactions on aerosol particle surfaces. This paper presents a novel approach that introduces a gold mesh during the sampling process, enabling the true spectrum of liquid water to be measured in transmission mode, thereby addressing spectral distortion issues at 3400 cm^-1. Additionally, common inorganic components of atmospheric pollution were measured, providing a feasible method for using FTIR spectroscopy to address atmospheric pollution issues. Finally, the introduction of the gold mesh sampling method was employed to measure the heterogeneous chemical kinetics of road dust surface during traffic pollution processes, offering a viable solution for using FTIR spectroscopy to address atmospheric pollution concerns.