TY - JOUR A1 - Ito, K A1 - Xue, N A1 - Thurston, G T1 - Spatial variation of PM2.5 chemical species and source-apportioned mass concentrations in New York City. Y1 - 2004/10/ N1 - R827351 N1 - R827351C001 N1 - R827997 JF - ATMOSPHERIC ENVIRONMENT J1 - ATMOS ENVIRON J2 - Atmos.Environ. VL - 38 IS - 31 SP - 5269 EP - 5282 ER -