5U. S. EPA Method 25. DETERMINATION OF TOTAL GASEOUS NONMETHANE ORGANIC EMISSIONS AS CARBON [ S ]. U. S. : EPA, February 2000.
6U. S. EPA Method TO - 12. METHOD FOR THE DETERMINATION OF NON - METHANE ORGANIC COMPOUNDS (NMOC) IN AMBIENT AIR USING CRYOGENIC PRECONCERTRATION AND DIRECT FLAME IONIZATION DETECTION(PDFID) [S]. U. S. : EPA, March 1999.
7ISO 14965: 2000. Air quality - Determination of total non - methane organic compounds - Cryogenic preconcentration and direct flame ionization detection method [ S]. ISO. 2000.