Getting the data on the chemical composition of the PM2.5 fraction of air pollution requires fairly advanced instrumentation and lab capabilities. It is the im

Getting the data on the chemical composition of the PM2.5 fraction of air pollution requires fairly advanced instrumentation and lab capabilities. It is the important data in estimating toxicity, for example: https://meetingorganizer.copernicus.org/EGU24/EGU24-881.html https://meetingorganizer.copernicus.org/EGU24/EGU24-881.html > "It was found that PM chemical composition was major determinant in toxicity assessment rather than its mass concentration."