Raman imaging a versatile technique to investigate the chemistry at the level of individual particles

摘要

It is now well known that atmospheric particles aggregate and react with tropospheric reagents leading to complex heterogeneous and multiphasic chemical phenomena which occur at aerosol size scale.Nowadays,the challenge resides in supplying analytical tools able to provide physico-chemical information of the individual particles at the particle scale.Complementary to the established single particle analysis techniques this study focuses on Raman microspectrometry which was combined with relevant self-modeling mixture analysis leading to the molecular images of the particles.