Nomenclature
TSP Total suspended particles
PM Particles matter
PM-10 Inhalable particles
PM-2, 5 Alveolar particles
PM-1 Very fine particles
NPS National polytechnic school
WHO World health organization
NR National road
EPA Environmental protection agency
HVS High volume sampler
AAS Atomic absorption spectrometry
MFC Mass flow controller
D50 Median diameter