1 0 Ozone O3 Operational 2 1 Water vapour H2O Operational 3 2 Methane CH4 Operational 4 3 Carbon dioxide CO2 Operational 5 4 Carbon monoxide CO Operational 6 5 Nitrogen dioxide NO2 Operational 7 6 Nitrous oxide N2O Operational 8 7 Formaldehyde HCHO Operational 9 8 Sulphur dioxide SO2 Operational 10 9 Ammonia NH3 Operational 11 10 Ammonium cation NH4+ Operational 12 11 Nitrogen monoxide NO Operational 13 12 Atomic oxygen O Operational 14 13 Nitrate radical NO3• Operational 15 14 Hydroperoxyl radical HOO• Operational 16 15 Dinitrogen pentoxide N2O5 Operational 17 16 Nitrous acid HONO Operational 18 17 Nitric acid HNO3 Operational 19 18 Peroxynitric acid HO2NO2 Operational 20 19 Hydrogen peroxide H2O2 Operational 21 20 Dihydrogen H2 Operational 22 21 Atomic nitrogen N Operational 23 22 Sulphate anion SO42- Operational 24 23 Atomic Radon Rn Operational 25 24 Mercury vapour Hg(0) Operational 26 25 Mercury(II) cation Hg2+ Operational 27 26 Atomic chlorine Cl Operational 28 27 Chlorine monoxide ClO Operational 29 28 Dichlorine peroxide Cl2O2 Operational 30 29 Hypochlorous acid HClO Operational 31 30 Chlorine nitrate ClONO2 Operational 32 31 Chlorine dioxide ClO2 Operational 33 32 Atomic bromine Br Operational 34 33 Bromine monoxide BrO Operational 35 34 Bromine chloride BrCl Operational 36 35 Hydrogen bromide HBr Operational 37 36 Hypobromous acid HBrO Operational 38 37 Bromine nitrate BrONO2 Operational 39 38 Dioxygen O2 Operational 40 39 Nitryl chloride NO2Cl Operational 41 40 Sulphuric acid H2SO4 Operational 42 41 Hydrogen sulphide H2S Operational 43 42 Sulphur trioxide SO3 Operational 44 43 Bromine Br2 Operational 45 44 Hydrofluoric acid HF Operational 46 45 Sulphur hexafluoride SF6 Operational 47 46 Chlorine Cl2 Operational 48 47-9999 Reserved Operational 49 10000 Hydroxyl radical HO• Operational 50 10001 Methyl peroxy radical CH3OO• Operational 51 10002 Methyl hydroperoxide CH3O2H Operational 52 10004 Methanol CH3OH Operational 53 10005 Formic acid CH3OOH Operational 54 10006 Hydrogen cyanide HCN Operational 55 10007 Aceto nitrile CH3CN Operational 56 10008 Ethane C2H6 Operational 57 10009 Ethene (= Ethylene) C2H4 Operational 58 10010 Ethyne (= Acetylene) C2H2 Operational 59 10011 Ethanol C2H5OH Operational 60 10012 Acetic acid C2H5OOH Operational 61 10013 Peroxyacetyl nitrate CH3C(O)OONO2 Operational 62 10014 Propane C3H8 Operational 63 10015 Propene C3H6 Operational 64 10016 Butane (all isomers) C4H10 Operational 65 10017 Isoprene C5H10 Operational 66 10018 Alpha pinene C10H16 Operational 67 10019 Beta pinene C10H16 Operational 68 10020 Limonene C10H16 Operational 69 10021 Benzene C6H6 Operational 70 10022 Toluene C7H8 Operational 71 10023 Xylene C8H10 Operational 72 10024 Methanesulphonic acid CH3SO3H Operational 73 10025 Methylglyoxal (2-oxopropanal) CH3C(O)CHO Operational 74 10026 Peroxyacetyl radical CH3C(O)OO• Operational 75 10027 Methacrylic acid (2-methylprop-2-enoic acid) CH2C(CH3)COOH Operational 76 10028 Methacrolein (2-methylprop-2-enal) CH2C(CH3)CHO Operational 77 10029 Acetone (propan-2-one) CH3C(O)CH3 Operational 78 10030 Ethyl dioxidanyl radical CH3CH2OO• Operational 79 10031 Butadiene (buta-1,3-diene) (CH2CH)2 Operational 80 10032 Acetaldehyde (ethanal) CH3CHO Operational 81 10033 Glycolaldehyde (hydroxyethanal) HOCH2CHO Operational 82 10034 Cresol (methylphenol), all isomers CH3C6H4OH Operational 83 10035 Peracetic acid (ethaneperoxoic acid) CH3C(O)OOH Operational 84 10036 2-hydroxyethyl oxidanyl radical HOCH2CH2O• Operational 85 10037 2-hydroxyethyl dioxidanyl radical HOCH2CH2OO• Operational 86 10038 Glyoxal (oxaldehyde) OCHCHO Operational 87 10039 Isopropyl dioxidanyl radical (CH3)2CHOO• Operational 88 10040 Isopropyl hydroperoxide (2-hydroperoxypropane) (CH3)2CHOOH Operational 89 10041 Hydroxyacetone (1-hydroxypropan-2-one) CH3C(O)CH2OH Operational 90 10042 Peroxyacetic acid (ethaneperoxoic acid) CH3C(O)OOH Operational 91 10043 Methyl vinyl ketone (but-3-en-2-one) CH3C(O)CHCH2 Operational 92 10044 Phenoxy radical C6H5O• Operational 93 10045 Methyl radical CH3• Operational 94 10046 Carbonyl sulphide (carbon oxide sulphide) OCS Operational 95 10047 Dibromomethane CH2Br2 Operational 96 10048 Methoxy radical CH3O• Operational 97 10049 Tribromomethane CHBr3 Operational 98 10050 Formyl radical (oxomethyl radical) HOC• Operational 99 10051 Hydroxymethyl dioxidanyl radical HOCH2OO• Operational 100 10052 Ethyl hydroperoxide CH3CH2OOH Operational 101 10053 3-hydroxypropyl dioxidanyl radical HOCH2CH2CH2OO• Operational 102 10054 3-hydroxypropyl hydroperoxide HOCH2CH2CH2OOH Operational 103 10055-10499 Reserved for other simple organic molecules (e.g. higher aldehydes, alcohols, peroxides, ...) Operational 104 10500 Dimethyl sulphide CH3SCH3 (DMS) Operational 105 10501 DMSO (dimethyl sulfoxide) (CH3)2SO Operational 106 10502-20000 Reserved Operational 107 20001 Hydrogen chloride HCl Operational 108 20002 CFC-11 (trichlorofluoromethane) CCl3F Operational 109 20003 CFC-12 (dichlorodifluoromethane) CCl2F2 Operational 110 20004 CFC-113 (1,1,2-trichloro-1,2,2-trifluoroethane) Cl2FC-CClF2 Operational 111 20005 CFC-113a (1,1,1-trichloro-2,2,2-trifluoroethane) Cl3C-CF3 Operational 112 20006 CFC-114 (1,2-dichloro-1,1,2,2-tetrafluoroethane) ClF2C-CClF2 Operational 113 20007 CFC-115 (1-chloro-1,1,2,2,2-pentafluoroethane) ClF2C-CF3 Operational 114 20008 HCFC-22 (chlorodifluoromethane) CHClF2 Operational 115 20009 HCFC-141b (1,1-dichloro-1-fluoroethane) Cl2FC-CH3 Operational 116 20010 HCFC-142b (1-chloro-1,1-difluoroethane) ClF2C-CH3 Operational 117 20011 Halon-1202 (dibromodifluoromethane) CBr2F2 Operational 118 20012 Halon-1211 (bromochlorodifluoromethane) CBrClF2 Operational 119 20013 Halon-1301 (bromotrifluoromethane) CBrF3 Operational 120 20014 Halon-2402 (1,2-dibromo-1,1,2,2-tetrafluoroethane) BrF2C-CBrF2 Operational 121 20015 HCC-40 (methyl chloride) CH3Cl Operational 122 20016 HCC-10 (carbon tetrachloride) CCl4 Operational 123 20017 HCC-140a (1,1,1-trichloroethane) Cl3C-CH3 Operational 124 20018 HBC-40B1 (methyl bromide) CH3Br Operational 125 20019 HCH (hexachlorocyclohexane) all isomers C6H6Cl6 Operational 126 20020 α-HCH (α-hexachlorocyclohexane) both enantiomers α-C6H6Cl6 Operational 127 20021 PCB-153 (2,2',4,4',5,5'-hexachlorobiphenyl) (C6H2Cl3)2 Operational 128 20022 HCFC-141a (1,1-dichloro-2-fluoroethane) Cl2HC-CH2F Operational 129 20023-29999 Reserved Operational 130 30000 Radioactive pollutant (tracer, defined by originating centre) Operational 131 30001-30009 Reserved Operational 132 30010 Tritium (Hydrogen 3) H-3 Operational 133 30011 Tritium organic bounded H-3o Operational 134 30012 Tritium inorganic H-3a Operational 135 30013 Beryllium 7 Be-7 Operational 136 30014 Beryllium 10 Be-10 Operational 137 30015 Carbon 14 C-14 Operational 138 30016 Carbon 14 CO2 C-14CO2 Operational 139 30017 Carbon 14 other gases C-14og Operational 140 30018 Nitrogen 13 N-13 Operational 141 30019 Nitrogen 16 N-16 Operational 142 30020 Fluorine 18 F-18 Operational 143 30021 Sodium 22 Na-22 Operational 144 30022 Phosphate 32 P-32 Operational 145 30023 Phosphate 33 P-33 Operational 146 30024 Sulphur 35 S-35 Operational 147 30025 Chlorine 36 Cl-36 Operational 148 30026 Potassium 40 K-40 Operational 149 30027 Argon 41 Ar-41 Operational 150 30028 Calcium 41 Ca-41 Operational 151 30029 Calcium 45 Ca-45 Operational 152 30030 Titanium 44 Ti-44 Operational 153 30031 Scandium 46 Sc-46 Operational 154 30032 Vanadium 48 V-48 Operational 155 30033 Vanadium 49 V-49 Operational 156 30034 Chrome 51 Cr-51 Operational 157 30035 Manganese 52 Mn-52 Operational 158 30036 Manganese 54 Mn-54 Operational 159 30037 Iron 55 Fe-55 Operational 160 30038 Iron 59 Fe-59 Operational 161 30039 Cobalt 56 Co-56 Operational 162 30040 Cobalt 57 Co-57 Operational 163 30041 Cobalt 58 Co-58 Operational 164 30042 Cobalt 60 Co-60 Operational 165 30043 Nickel 59 Ni-59 Operational 166 30044 Nickel 63 Ni-63 Operational 167 30045 Zinc 65 Zn-65 Operational 168 30046 Gallium 67 Ga-67 Operational 169 30047 Gallium 68 Ga-68 Operational 170 30048 Germanium 68 Ge-68 Operational 171 30049 Germanium 69 Ge-69 Operational 172 30050 Arsenic 73 As-73 Operational 173 30051 Selenium 75 Se-75 Operational 174 30052 Selenium 79 Se-79 Operational 175 30053 Rubidium 81 Rb-81 Operational 176 30054 Rubidium 83 Rb-83 Operational 177 30055 Rubidium 84 Rb-84 Operational 178 30056 Rubidium 86 Rb-86 Operational 179 30057 Rubidium 87 Rb-87 Operational 180 30058 Rubidium 88 Rb-88 Operational 181 30059 Krypton 85 Kr-85 Operational 182 30060 Krypton 85 metastable Kr-85m Operational 183 30061 Krypton 87 Kr-87 Operational 184 30062 Krypton 88 Kr-88 Operational 185 30063 Krypton 89 Kr-89 Operational 186 30064 Strontium 85 Sr-85 Operational 187 30065 Strontium 89 Sr-89 Operational 188 30066 Strontium 89/90 Sr-8990 Operational 189 30067 Strontium 90 Sr-90 Operational 190 30068 Strontium 91 Sr-91 Operational 191 30069 Strontium 92 Sr-92 Operational 192 30070 Yttrium 87 Y-87 Operational 193 30071 Yttrium 88 Y-88 Operational 194 30072 Yttrium 90 Y-90 Operational 195 30073 Yttrium 91 Y-91 Operational 196 30074 Yttrium 91 metastable Y-91m Operational 197 30075 Yttrium 92 Y-92 Operational 198 30076 Yttrium 93 Y-93 Operational 199 30077 Zirconium 89 Zr-89 Operational 200 30078 Zirconium 93 Zr-93 Operational 201 30079 Zirconium 95 Zr-95 Operational 202 30080 Zirconium 97 Zr-97 Operational 203 30081 Niobium 93 metastable Nb-93m Operational 204 30082 Niobium 94 Nb-94 Operational 205 30083 Niobium 95 Nb-95 Operational 206 30084 Niobium 95 metastable Nb-95m Operational 207 30085 Niobium 97 Nb-97 Operational 208 30086 Niobium 97 metastable Nb-97m Operational 209 30087 Molybdenum 93 Mo-93 Operational 210 30088 Molybdenum 99 Mo-99 Operational 211 30089 Technetium 95 metastable Tc-95m Operational 212 30090 Technetium 96 Tc-96 Operational 213 30091 Technetium 99 Tc-99 Operational 214 30092 Technetium 99 metastable Tc-99m Operational 215 30093 Rhodium 99 Rh-99 Operational 216 30094 Rhodium 101 Rh-101 Operational 217 30095 Rhodium 102 metastable Rh-102m Operational 218 30096 Rhodium 103 metastable Rh-103m Operational 219 30097 Rhodium 105 Rh-105 Operational 220 30098 Rhodium 106 Rh-106 Operational 221 30099 Palladium 100 Pd-100 Operational 222 30100 Palladium 103 Pd-103 Operational 223 30101 Palladium 107 Pd-107 Operational 224 30102 Ruthenium 103 Ru-103 Operational 225 30103 Ruthenium 105 Ru-105 Operational 226 30104 Ruthenium 106 Ru-106 Operational 227 30105 Silver 108 metastable Ag-108m Operational 228 30106 Silver 110 metastable Ag-110m Operational 229 30107 Cadmium 109 Cd-109 Operational 230 30108 Cadmium 113 metastable Cd-113m Operational 231 30109 Cadmium 115 metastable Cd-115m Operational 232 30110 Indium 114 metastable In-114m Operational 233 30111 Tin 113 Sn-113 Operational 234 30112 Tin 119 metastable Sn-119m Operational 235 30113 Tin 121 metastable Sn-121m Operational 236 30114 Tin 122 Sn-122 Operational 237 30115 Tin 123 Sn-123 Operational 238 30116 Tin 126 Sn-126 Operational 239 30117 Antimony 124 Sb-124 Operational 240 30118 Antimony 125 Sb-125 Operational 241 30119 Antimony 126 Sb-126 Operational 242 30120 Antimony 127 Sb-127 Operational 243 30121 Antimony 129 Sb-129 Operational 244 30122 Tellurium 123 metastable Te-123m Operational 245 30123 Tellurium 125 metastable Te-125m Operational 246 30124 Tellurium 127 Te-127 Operational 247 30125 Tellurium 127 metastable Te-127m Operational 248 30126 Tellurium 129 Te-129 Operational 249 30127 Tellurium 129 metastable Te-129m Operational 250 30128 Tellurium 131 metastable Te-131m Operational 251 30129 Tellurium 132 Te-132 Operational 252 30130 Iodine 123 I-123 Operational 253 30131 Iodine 124 I-124 Operational 254 30132 Iodine 125 I-125 Operational 255 30133 Iodine 126 I-126 Operational 256 30134 Iodine 129 I-129 Operational 257 30135 Iodine 129 elementary gaseous I-129g Operational 258 30136 Iodine 129 organic bounded I-129o Operational 259 30137 Iodine 131 I-131 Operational 260 30138 Iodine 131 elementary gaseous I-131g Operational 261 30139 Iodine 131 organic bounded I-131o Operational 262 30140 Iodine 131 gaseous elementary and organic bounded I-131go Operational 263 30141 Iodine 131 aerosol I-131a Operational 264 30142 Iodine 132 I-132 Operational 265 30143 Iodine 132 elementary gaseous I-132g Operational 266 30144 Iodine 132 organic bounded I-132o Operational 267 30145 Iodine 132 gaseous elementary and organic bounded I-132go Operational 268 30146 Iodine 132 aerosol I-132a Operational 269 30147 Iodine 133 I-133 Operational 270 30148 Iodine 133 elementary gaseous I-133g Operational 271 30149 Iodine 133 organic bounded I-133o Operational 272 30150 Iodine 133 gaseous elementary and organic bounded I-133go Operational 273 30151 Iodine 133 aerosol I-133a Operational 274 30152 Iodine 134 I-134 Operational 275 30153 Iodine 134 elementary gaseous I-134g Operational 276 30154 Iodine 134 organic bounded I-134o Operational 277 30155 Iodine 135 I-135 Operational 278 30156 Iodine 135 elementary gaseous I-135g Operational 279 30157 Iodine 135 organic bounded I-135o Operational 280 30158 Iodine 135 gaseous elementary and organic bounded I-135go Operational 281 30159 Iodine 135 aerosol I-135a Operational 282 30160 Xenon 131 metastable Xe-131m Operational 283 30161 Xenon 133 Xe-133 Operational 284 30162 Xenon 133 metastable Xe-133m Operational 285 30163 Xenon 135 Xe-135 Operational 286 30164 Xenon 135 metastable Xe-135m Operational 287 30165 Xenon 137 Xe-137 Operational 288 30166 Xenon 138 Xe-138 Operational 289 30167 Xenon sum of all Xenon isotopes Xe-sum Operational 290 30168 Caesium 131 Cs-131 Operational 291 30169 Caesium 134 Cs-134 Operational 292 30170 Caesium 135 Cs-135 Operational 293 30171 Caesium 136 Cs-136 Operational 294 30172 Caesium 137 Cs-137 Operational 295 30173 Barium 133 Ba-133 Operational 296 30174 Barium 137 metastable Ba-137m Operational 297 30175 Barium 140 Ba-140 Operational 298 30176 Cerium 139 Ce-139 Operational 299 30177 Cerium 141 Ce-141 Operational 300 30178 Cerium 143 Ce-143 Operational 301 30179 Cerium 144 Ce-144 Operational 302 30180 Lanthanum 140 La-140 Operational 303 30181 Lanthanum 141 La-141 Operational 304 30182 Praseodymium 143 Pr-143 Operational 305 30183 Praseodymium 144 Pr-144 Operational 306 30184 Praseodymium 144 metastable Pr-144m Operational 307 30185 Samarium 145 Sm-145 Operational 308 30186 Samarium 147 Sm-147 Operational 309 30187 Samarium 151 Sm-151 Operational 310 30188 Neodymium 147 Nd-147 Operational 311 30189 Promethium 146 Pm-146 Operational 312 30190 Promethium 147 Pm-147 Operational 313 30191 Promethium 151 Pm-151 Operational 314 30192 Europium 152 Eu-152 Operational 315 30193 Europium 154 Eu-154 Operational 316 30194 Europium 155 Eu-155 Operational 317 30195 Gadolinium 153 Gd-153 Operational 318 30196 Terbium 160 Tb-160 Operational 319 30197 Holmium 166 metastable Ho-166m Operational 320 30198 Thulium 170 Tm-170 Operational 321 30199 Ytterbium 169 Yb-169 Operational 322 30200 Hafnium 175 Hf-175 Operational 323 30201 Hafnium 181 Hf-181 Operational 324 30202 Tantalum 179 Ta-179 Operational 325 30203 Tantalum 182 Ta-182 Operational 326 30204 Rhenium 184 Re-184 Operational 327 30205 Iridium 192 Ir-192 Operational 328 30206 Mercury 203 Hg-203 Operational 329 30207 Thallium 204 Tl-204 Operational 330 30208 Thallium 207 Tl-207 Operational 331 30209 Thallium 208 Tl-208 Operational 332 30210 Thallium 209 Tl-209 Operational 333 30211 Bismuth 205 Bi-205 Operational 334 30212 Bismuth 207 Bi-207 Operational 335 30213 Bismuth 210 Bi-210 Operational 336 30214 Bismuth 211 Bi-211 Operational 337 30215 Bismuth 212 Bi-212 Operational 338 30216 Bismuth 213 Bi-213 Operational 339 30217 Bismuth 214 Bi-214 Operational 340 30218 Polonium 208 Po-208 Operational 341 30219 Polonium 210 Po-210 Operational 342 30220 Polonium 212 Po-212 Operational 343 30221 Polonium 213 Po-213 Operational 344 30222 Polonium 214 Po-214 Operational 345 30223 Polonium 215 Po-215 Operational 346 30224 Polonium 216 Po-216 Operational 347 30225 Polonium 218 Po-218 Operational 348 30226 Lead 209 Pb-209 Operational 349 30227 Lead 210 Pb-210 Operational 350 30228 Lead 211 Pb-211 Operational 351 30229 Lead 212 Pb-212 Operational 352 30230 Lead 214 Pb-214 Operational 353 30231 Astatine 217 At-217 Operational 354 30232 Radon 219 Rn-219 Operational 355 30233 Radon 220 Rn-220 Operational 356 30234 Radon 222 Rn-222 Operational 357 30235 Francium 221 Fr-221 Operational 358 30236 Francium 223 Fr-223 Operational 359 30237 Radium 223 Ra-223 Operational 360 30238 Radium 224 Ra-224 Operational 361 30239 Radium 225 Ra-225 Operational 362 30240 Radium 226 Ra-226 Operational 363 30241 Radium 228 Ra-228 Operational 364 30242 Actinium 225 Ac-225 Operational 365 30243 Actinium 227 Ac-227 Operational 366 30244 Actinium 228 Ac-228 Operational 367 30245 Thorium 227 Th-227 Operational 368 30246 Thorium 228 Th-228 Operational 369 30247 Thorium 229 Th-229 Operational 370 30248 Thorium 230 Th-230 Operational 371 30249 Thorium 231 Th-231 Operational 372 30250 Thorium 232 Th-232 Operational 373 30251 Thorium 234 Th-234 Operational 374 30252 Protactinium 231 Pa-231 Operational 375 30253 Protactinium 233 Pa-233 Operational 376 30254 Protactinium 234 metastable Pa-234m Operational 377 30255 Uranium 232 U-232 Operational 378 30256 Uranium 233 U-233 Operational 379 30257 Uranium 234 U-234 Operational 380 30258 Uranium 235 U-235 Operational 381 30259 Uranium 236 U-236 Operational 382 30260 Uranium 237 U-237 Operational 383 30261 Uranium 238 U-238 Operational 384 30262 Plutonium 236 Pu-236 Operational 385 30263 Plutonium 238 Pu-238 Operational 386 30264 Plutonium 239 Pu-239 Operational 387 30265 Plutonium 240 Pu-240 Operational 388 30266 Plutonium 241 Pu-241 Operational 389 30267 Plutonium 242 Pu-242 Operational 390 30268 Plutonium 244 Pu-244 Operational 391 30269 Neptunium 237 Np-237 Operational 392 30270 Neptunium 238 Np-238 Operational 393 30271 Neptunium 239 Np-239 Operational 394 30272 Americium 241 Am-241 Operational 395 30273 Americium 242 Am-242 Operational 396 30274 Americium 242 metastable Am-242m Operational 397 30275 Americium 243 Am-243 Operational 398 30276 Curium 242 Cm-242 Operational 399 30277 Curium 243 Cm-243 Operational 400 30278 Curium 244 Cm-244 Operational 401 30279 Curium 245 Cm-245 Operational 402 30280 Curium 246 Cm-246 Operational 403 30281 Curium 247 Cm-247 Operational 404 30282 Curium 248 Cm-248 Operational 405 30283 Curium 243/244 Cm-243244 Operational 406 30284 Plutonium 238/Americium 241 Pu-238Am-241 Operational 407 30285 Plutonium 239/240 Pu-239240 Operational 408 30286 Berkelium 249 Bk-249 Operational 409 30287 Californium 249 Cf-249 Operational 410 30288 Californium 250 Cf-250 Operational 411 30289 Californium 252 Cf-252 Operational 412 30290 Sum aerosol particulates SumAer Operational 413 30291 Sum Iodine SumIod Operational 414 30292 Sum noble gas SumNG Operational 415 30293 Activation gas ActGas Operational 416 30294 Cs-137 Equivalent EquCs137 Operational 417 30295 Carbon-13 C-13 Operational 418 30296 Lead Pb Operational 419 30297-39999 Reserved Operational 420 40000 Singlet sigma oxygen (dioxygen (sigma singlet)) O2(1Σ+g) Operational 421 40001 Singlet delta oxygen (dioxygen (delta singlet)) O2(1Δg) Operational 422 40002 Singlet excited oxygen atom O(1D) Operational 423 40003 Triplet ground state oxygen atom O(3P) Operational 424 40004-59999 Reserved Operational 425 60000 HOx radical (OH+HO2) HOx• Operational 426 60001 Total inorganic and organic peroxy radicals (HOO• + ROO•) ROO• Operational 427 60002 Passive Ozone Operational 428 60003 NOx expressed as nitrogen NOx Operational 429 60004 All nitrogen oxides (NOy) expressed as nitrogen NOy Operational 430 60005 Total inorganic chlorine Clx Operational 431 60006 Total inorganic bromine Brx Operational 432 60007 Total inorganic chlorine except HCl, ClONO2: ClOx Operational 433 60008 Total inorganic bromine except HBr, BrONO2: BrOx Operational 434 60009 Lumped alkanes Operational 435 60010 Lumped alkenes Operational 436 60011 Lumped aromatic compounds Operational 437 60012 Lumped terpenes Operational 438 60013 Non-methane volatile organic compounds expressed as carbon NMVOC Operational 439 60014 Anthropogenic non-methane volatile organic compounds expressed as carbon aNMVOC Operational 440 60015 Biogenic non-methane volatile organic compounds expressed as carbon bNMVOC Operational 441 60016 Lumped oxygenated hydrocarbons OVOC Operational 442 60017 NOx expressed as nitrogen dioxide (NO2) NOx Operational 443 60018 Organic aldehydes RCHO Operational 444 60019 Organic peroxides ROOH Operational 445 60020 Organic nitrates RNO3 Operational 446 60021 Ethers ROR’ Operational 447 60022 Amines NRR’R’’ Operational 448 60023 Ketones RC(O)R’ Operational 449 60024 Dicarbonyls unsaturated RC(O)CH2C(O)R’ Operational 450 60025 Hydroxy dicarbonyls unsaturated RC(O)CHOHC(O)R’ Operational 451 60026 Hydroxy ketones RC(OH)C(O)R’ Operational 452 60027 Oxides Ox Operational 453 60028-61999 Reserved Operational 454 62000 Total aerosol Operational 455 62001 Dust dry Operational 456 62002 Water in ambient Operational 457 62003 Ammonium dry Operational 458 62004 Nitrate dry Operational 459 62005 Nitric acid trihydrate Operational 460 62006 Sulphate dry Operational 461 62007 Mercury dry Operational 462 62008 Sea salt dry Operational 463 62009 Black carbon dry Operational 464 62010 Particulate organic matter dry Operational 465 62011 Primary particulate organic matter dry Operational 466 62012 Secondary particulate organic matter dry Operational 467 62013 Black carbon hydrophilic dry Operational 468 62014 Black carbon hydrophobic dry Operational 469 62015 Particulate organic matter hydrophilic dry Operational 470 62016 Particulate organic matter hydrophobic dry Operational 471 62017 Nitrate hydrophilic dry Operational 472 62018 Nitrate hydrophobic dry Operational 473 62019 Reserved Operational 474 62020 Smoke - high absorption Operational 475 62021 Smoke - low absorption Operational 476 62022 Aerosol - high absorption Operational 477 62023 Aerosol - low absorption Operational 478 62024 Reserved Operational 479 62025 Volcanic ash Operational 480 62026 Particulate matter (PM) Operational 481 62027 Reserved Operational 482 62028 Total aerosol hydrophilic Operational 483 62029 Total aerosol hydrophobic Operational 484 62030-62099 Reserved Operational 485 62100 Alnus (alder) pollen Operational 486 62101 Betula (birch) pollen Operational 487 62102 Castanea (chestnut) pollen Operational 488 62103 Carpinus (hornbeam) pollen Operational 489 62104 Corylus (hazel) pollen Operational 490 62105 Fagus (beech) pollen Operational 491 62106 Fraxinus (ash) pollen Operational 492 62107 Pinus (pine) pollen Operational 493 62108 Platanus (plane) pollen Operational 494 62109 Populus (cottonwood, poplar) pollen Operational 495 62110 Quercus (oak) pollen Operational 496 62111 Salix (willow) pollen Operational 497 62112 Taxus (yew) pollen Operational 498 62113 Tilia (lime, linden) pollen Operational 499 62114 Ulmus (elm) pollen Operational 500 62115-62199 Reserved Operational 501 62200 Ambrosia (ragweed, burr-ragweed) pollen Operational 502 62201 Artemisia (sagebrush, wormwood, mugwort) pollen Operational 503 62202 Brassica (rape, broccoli, Brussels sprouts, cabbage, cauliflower, collards, kale, kohlrabi, mustard, rutabaga) pollen Operational 504 62203 Plantago (plantain) pollen Operational 505 62204 Rumex (dock, sorrel) pollen Operational 506 62205 Urtica (nettle) pollen Operational 507 62206-62299 Reserved Operational 508 62300 Poaceae (grass family) pollen Operational 509 62301-62999 Reserved Operational 510 63000-65534 For experimental use at local level Operational 511 65535 Missing Operational