Select laboratory network Air and indoor environment 35 Human biomonitoring 101 Air and indoor environment 35 Filter Reset filters Type of laboratory PARC member 21 External laboratory 14 Air environment Indoor air 28 Outdoor air 26 Matrix Particle phase 32 Gas phase 30 Substance group Acrylamide 2 Ammonia 8 Aprotic solvents 3 Aromatic amines 1 Arsenic (As) in PM10 19 Arsenic (As) in PM2.5 15 Asbestos 5 Benzene 19 Benzo(a)pyrene in PM10 17 Benzothiazoles 2 Bisphenols 6 Black carbon 9 Cadmium (Cd) in PM10 20 Cadmium (Cd) in PM2.5 16 Carbon dioxide 12 Carbon monoxide 14 Chlorinated paraffins 2 Cotinine 1 Dechloranes 3 Diisocyanates 6 Dioxins and furans 3 Disinfection by-products 5 Flame retardants 9 Formaldehyde 12 Halogenated anaesthetics 3 Lead (Pb) in PM10 20 Lead (Pb) in PM2.5 16 MDI/TDI 3 Mercury 6 Metals and trace elements 22 Musks 2 Nickel (Ni) in PM10 20 Nickel (Ni) in PM2.5 16 Nitrogen dioxide 18 Nitrogen oxide 14 Nitrosamines 1 Odour 2 Oil mist 2 Organic and elemental carbon 12 Organophosphate ester plasticizers (OPEs) 6 Ozone 16 Parabens 1 Particles (PM10) 21 Particles (PM2.5) 20 Particles (total) 17 Per- and polyfluoroalkyl substances (PFAS) 8 Pesticides-glyphosate 1 Pesticides-neonicotinoids 3 Pesticides-organochlorines 9 Pesticides-organophosphates 7 Pesticides-phenylpyrazoles 2 Pesticides-pyrethroids 6 Phenols 10 Phthalates 10 Polychlorinated biphenyls (PCBs) 8 Polycyclic aromatic hydrocarbons (PAHs) 20 Radon 3 Siloxanes 5 Sugars, sugar alcohols, tetrols 3 Sulfur dioxide 13 Ultrafine particles 8 UV filters-benzophenones 3 Volatile and semi-volatile organic compounds (VOCs and SVOCs) 18 Water soluble ions 15 Other chemicals 15