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 NH4+ Operational 12 11 Nitrogen monoxide NO Operational 13 12 Atomic oxygen O Operational 14 13 Nitrate radical NO3 Operational 15 14 Hydroperoxyl radical HO2 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 Molecular hydrogen H Operational 22 21 Atomic nitrogen N Operational 23 22 Sulphate SO42- Operational 24 23 Radon Rn Operational 25 24 Elemental mercury Hg(0) Operational 26 25 Divalent mercury 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 Oxygen O2 Operational 40 39-9999 Reserved Operational 41 10000 Hydroxyl radical OH Operational 42 10001 Methyl peroxy radical CH3O2 Operational 43 10002 Methyl hydroperoxide CH3O2H Operational 44 10004 Methanol CH3OH Operational 45 10005 Formic acid CH3OOH Operational 46 10006 Hydrogen cyanide HCN Operational 47 10007 Aceto nitrile CH3CN Operational 48 10008 Ethane C2H6 Operational 49 10009 Ethene (= Ethylene) C2H4 Operational 50 10010 Ethyne (= Acetylene) C2H2 Operational 51 10011 Ethanol C2H5OH Operational 52 10012 Acetic acid C2H5OOH Operational 53 10013 Peroxyacetyl nitrate CH3C(O)OONO2 Operational 54 10014 Propane C3H8 Operational 55 10015 Propene C3H6 Operational 56 10016 Butanes C4H10 Operational 57 10017 Isoprene C5H10 Operational 58 10018 Alpha pinene C10H16 Operational 59 10019 Beta pinene C10H16 Operational 60 10020 Limonene C10H16 Operational 61 10021 Benzene C6H6 Operational 62 10022 Toluene C7H8 Operational 63 10023 Xylene C8H10 Operational 64 10024-10499 Reserved for other simple organic molecules (e.g. higher aldehydes, alcohols, peroxides, ...) Operational 65 10500 Dimethyl sulphide CH3SCH3 (DMS) Operational 66 10501-20000 Reserved Operational 67 20001 Hydrogen chloride Operational 68 20002 CFC-11 Operational 69 20003 CFC-12 Operational 70 20004 CFC-113 Operational 71 20005 CFC-113a Operational 72 20006 CFC-114 Operational 73 20007 CFC-115 Operational 74 20008 HCFC-22 Operational 75 20009 HCFC-141b Operational 76 20010 HCFC-142b Operational 77 20011 Halon-1202 Operational 78 20012 Halon-1211 Operational 79 20013 Halon-1301 Operational 80 20014 Halon-2402 Operational 81 20015 Methyl chloride (HCC-40) Operational 82 20016 Carbon tetrachloride (HCC-10) Operational 83 20017 HCC-140a CH3CCl3 Operational 84 20018 Methyl bromide (HBC-40B1) Operational 85 20019 Hexachlorocyclohexane (HCH) Operational 86 20020 Alpha hexachlorocyclohexane Operational 87 20021 Hexachlorobiphenyl (PCB-153) Operational 88 20022-29999 Reserved Operational 89 30000 Radioactive pollutant (tracer, defined by originating centre) Operational 90 30001 - 30009 Reserved Operational 91 30010 Hydrogen H-3 Operational 92 30011 Hydrogen organic bounded H-3o Operational 93 30012 Hydrogen inorganic H-3a Operational 94 30013 Beryllium 7 Be-7 Operational 95 30014 Beryllium 10 Be-10 Operational 96 30015 Carbon 14 C-14 Operational 97 30016 Carbon 14 CO2 C-14CO2 Operational 98 30017 Carbon 14 other gases C-14og Operational 99 30018 Nitrogen 13 N-13 Operational 100 30019 Nitrogen 16 N-16 Operational 101 30020 Fluorine 18 F-18 Operational 102 30021 Sodium 22 Na-22 Operational 103 30022 Phosphate 32 P-32 Operational 104 30023 Phosphate 33 P-33 Operational 105 30024 Sulphur 35 S-35 Operational 106 30025 Chlorine 36 Cl-36 Operational 107 30026 Potassium 40 K-40 Operational 108 30027 Argon 41 Ar-41 Operational 109 30028 Calcium 41 Ca-41 Operational 110 30029 Calcium 45 Ca-45 Operational 111 30030 Titanium 44 Ti-44 Operational 112 30031 Scandium 46 Sc-46 Operational 113 30032 Vanadium 48 V-48 Operational 114 30033 Vanadium 49 V-49 Operational 115 30034 Chrome 51 Cr-51 Operational 116 30035 Manganese 52 Mn-52 Operational 117 30036 Manganese 54 Mn-54 Operational 118 30037 Iron 55 Fe-55 Operational 119 30038 Iron 59 Fe-59 Operational 120 30039 Cobalt 56 Co-56 Operational 121 30040 Cobalt 57 Co-57 Operational 122 30041 Cobalt 58 Co-58 Operational 123 30042 Cobalt 60 Co-60 Operational 124 30043 Nickel 59 Ni-59 Operational 125 30044 Nickel 63 Ni-63 Operational 126 30045 Zinc 65 Zn-65 Operational 127 30046 Gallium 67 Ga-67 Operational 128 30047 Gallium 68 Ga-68 Operational 129 30048 Germanium 68 Ge-68 Operational 130 30049 Germanium 69 Ge-69 Operational 131 30050 Arsenic 73 As-73 Operational 132 30051 Selenium 75 Se-75 Operational 133 30052 Selenium 79 Se-79 Operational 134 30053 Rubidium 81 Rb-81 Operational 135 30054 Rubidium 83 Rb-83 Operational 136 30055 Rubidium 84 Rb-84 Operational 137 30056 Rubidium 86 Rb-86 Operational 138 30057 Rubidium 87 Rb-87 Operational 139 30058 Rubidium 88 Rb-88 Operational 140 30059 Krypton 85 Kr-85 Operational 141 30060 Krypton 85 metastable Kr-85m Operational 142 30061 Krypton 87 Kr-87 Operational 143 30062 Krypton 88 Kr-88 Operational 144 30063 Krypton 89 Kr-89 Operational 145 30064 Strontium 85 Sr-85 Operational 146 30065 Strontium 89 Sr-89 Operational 147 30066 Strontium 89/90 Sr-8990 Operational 148 30067 Strontium 90 Sr-90 Operational 149 30068 Strontium 91 Sr-91 Operational 150 30069 Strontium 92 Sr-92 Operational 151 30070 Yttrium 87 Y-87 Operational 152 30071 Yttrium 88 Y-88 Operational 153 30072 Yttrium 90 Y-90 Operational 154 30073 Yttrium 91 Y-91 Operational 155 30074 Yttrium 91 metastable Y-91m Operational 156 30075 Yttrium 92 Y-92 Operational 157 30076 Yttrium 93 Y-93 Operational 158 30077 Zirconium 89 Zr-89 Operational 159 30078 Zirconium 93 Zr-93 Operational 160 30079 Zirconium 95 Zr-95 Operational 161 30080 Zirconium 97 Zr-97 Operational 162 30081 Niobium 93 metastable Nb-93m Operational 163 30082 Niobium 94 Nb-94 Operational 164 30083 Niobium 95 Nb-95 Operational 165 30084 Niobium 95 metastable Nb-95m Operational 166 30085 Niobium 97 Nb-97 Operational 167 30086 Niobium 97 metastable Nb-97m Operational 168 30087 Molybdenum 93 Mo-93 Operational 169 30088 Molybdenum 99 Mo-99 Operational 170 30089 Technetium 95 metastable Tc-95m Operational 171 30090 Technetium 96 Tc-96 Operational 172 30091 Technetium 99 Tc-99 Operational 173 30092 Technetium 99 metastable Tc-99m Operational 174 30093 Rhodium 99 Rh-99 Operational 175 30094 Rhodium 101 Rh-101 Operational 176 30095 Rhodium 102 metastable Rh-102m Operational 177 30096 Rhodium 103 metastable Rh-103m Operational 178 30097 Rhodium 105 Rh-105 Operational 179 30098 Rhodium 106 Rh-106 Operational 180 30099 Palladium 100 Pd-100 Operational 181 30100 Palladium 103 Pd-103 Operational 182 30101 Palladium 107 Pd-107 Operational 183 30102 Ruthenium 103 Ru-103 Operational 184 30103 Ruthenium 105 Ru-105 Operational 185 30104 Ruthenium 106 Ru-106 Operational 186 30105 Silver 108 metastable Ag-108m Operational 187 30106 Silver 110 metastable Ag-110m Operational 188 30107 Cadmium 109 Cd-109 Operational 189 30108 Cadmium 113 metastable Cd-113m Operational 190 30109 Cadmium 115 metastable Cd-115m Operational 191 30110 Indium 114 metastable In-114m Operational 192 30111 Tin 113 Sn-113 Operational 193 30112 Tin 119 metastable Sn-119m Operational 194 30113 Tin 121 metastable Sn-121m Operational 195 30114 Tin 122 Sn-122 Operational 196 30115 Tin 123 Sn-123 Operational 197 30116 Tin 126 Sn-126 Operational 198 30117 Antimony 124 Sb-124 Operational 199 30118 Antimony 125 Sb-125 Operational 200 30119 Antimony 126 Sb-126 Operational 201 30120 Antimony 127 Sb-127 Operational 202 30121 Antimony 129 Sb-129 Operational 203 30122 Tellurium 123 metastable Te-123m Operational 204 30123 Tellurium 125 metastable Te-125m Operational 205 30124 Tellurium 127 Te-127 Operational 206 30125 Tellurium 127 metastable Te-127m Operational 207 30126 Tellurium 129 Te-129 Operational 208 30127 Tellurium 129 metastable Te-129m Operational 209 30128 Tellurium 131 metastable Te-131m Operational 210 30129 Tellurium 132 Te-132 Operational 211 30130 Iodine 123 I-123 Operational 212 30131 Iodine 124 I-124 Operational 213 30132 Iodine 125 I-125 Operational 214 30133 Iodine 126 I-126 Operational 215 30134 Iodine 129 I-129 Operational 216 30135 Iodine 129 elementary gaseous I-129g Operational 217 30136 Iodine 129 organic bounded I-129o Operational 218 30137 Iodine 131 I-131 Operational 219 30138 Iodine 131 elementary gaseous I-131g Operational 220 30139 Iodine 131 organic bounded I-131o Operational 221 30140 Iodine 131 gaseous elementary and organic bounded I-131go Operational 222 30141 Iodine 131 aerosol I-131a Operational 223 30142 Iodine 132 I-132 Operational 224 30143 Iodine 132 elementary gaseous I-132g Operational 225 30144 Iodine 132 organic bounded I-132o Operational 226 30145 Iodine 132 gaseous elementary and organic bounded I-132go Operational 227 30146 Iodine 132 aerosol I-132a Operational 228 30147 Iodine 133 I-133 Operational 229 30148 Iodine 133 elementary gaseous I-133g Operational 230 30149 Iodine 133 organic bounded I-133o Operational 231 30150 Iodine 133 gaseous elementary and organic bounded I-133go Operational 232 30151 Iodine 133 aerosol I-133a Operational 233 30152 Iodine 134 I-134 Operational 234 30153 Iodine 134 elementary gaseous I-134g Operational 235 30154 Iodine 134 organic bounded I-134o Operational 236 30155 Iodine 135 I-135 Operational 237 30156 Iodine 135 elementary gaseous I-135g Operational 238 30157 Iodine 135 organic bounded I-135o Operational 239 30158 Iodine 135 gaseous elementary and organic bounded I-135go Operational 240 30159 Iodine 135 aerosol I-135a Operational 241 30160 Xenon 131 metastable Xe-131m Operational 242 30161 Xenon 133 Xe-133 Operational 243 30162 Xenon 133 metastable Xe-133m Operational 244 30163 Xenon 135 Xe-135 Operational 245 30164 Xenon 135 metastable Xe-135m Operational 246 30165 Xenon 137 Xe-137 Operational 247 30166 Xenon 138 Xe-138 Operational 248 30167 Xenon sum of all Xenon isotopes Xe-sum Operational 249 30168 Caesium 131 Cs-131 Operational 250 30169 Caesium 134 Cs-134 Operational 251 30170 Caesium 135 Cs-135 Operational 252 30171 Caesium 136 Cs-136 Operational 253 30172 Caesium 137 Cs-137 Operational 254 30173 Barium 133 Ba-133 Operational 255 30174 Barium 137 metastable Ba-137m Operational 256 30175 Barium 140 Ba-140 Operational 257 30176 Cerium 139 Ce-139 Operational 258 30177 Cerium 141 Ce-141 Operational 259 30178 Cerium 143 Ce-143 Operational 260 30179 Cerium 144 Ce-144 Operational 261 30180 Lanthanum 140 La-140 Operational 262 30181 Lanthanum 141 La-141 Operational 263 30182 Praseodymium 143 Pr-143 Operational 264 30183 Praseodymium 144 Pr-144 Operational 265 30184 Praseodymium 144 metastable Pr-144m Operational 266 30185 Samarium 145 Sm-145 Operational 267 30186 Samarium 147 Sm-147 Operational 268 30187 Samarium 151 Sm-151 Operational 269 30188 Neodymium 147 Nd-147 Operational 270 30189 Promethium 146 Pm-146 Operational 271 30190 Promethium 147 Pm-147 Operational 272 30191 Promethium 151 Pm-151 Operational 273 30192 Europium 152 Eu-152 Operational 274 30193 Europium 154 Eu-154 Operational 275 30194 Europium 155 Eu-155 Operational 276 30195 Gadolinium 153 Gd-153 Operational 277 30196 Terbium 160 Tb-160 Operational 278 30197 Holmium 166 metastable Ho-166m Operational 279 30198 Thulium 170 Tm-170 Operational 280 30199 Ytterbium 169 Yb-169 Operational 281 30200 Hafnium 175 Hf-175 Operational 282 30201 Hafnium 181 Hf-181 Operational 283 30202 Tantalum 179 Ta-179 Operational 284 30203 Tantalum 182 Ta-182 Operational 285 30204 Rhenium 184 Re-184 Operational 286 30205 Iridium 192 Ir-192 Operational 287 30206 Mercury 203 Hg-203 Operational 288 30207 Thallium 204 Tl-204 Operational 289 30208 Thallium 207 Tl-207 Operational 290 30209 Thallium 208 Tl-208 Operational 291 30210 Thallium 209 Tl-209 Operational 292 30211 Bismuth 205 Bi-205 Operational 293 30212 Bismuth 207 Bi-207 Operational 294 30213 Bismuth 210 Bi-210 Operational 295 30214 Bismuth 211 Bi-211 Operational 296 30215 Bismuth 212 Bi-212 Operational 297 30216 Bismuth 213 Bi-213 Operational 298 30217 Bismuth 214 Bi-214 Operational 299 30218 Polonium 208 Po-208 Operational 300 30219 Polonium 210 Po-210 Operational 301 30220 Polonium 212 Po-212 Operational 302 30221 Polonium 213 Po-213 Operational 303 30222 Polonium 214 Po-214 Operational 304 30223 Polonium 215 Po-215 Operational 305 30224 Polonium 216 Po-216 Operational 306 30225 Polonium 218 Po-218 Operational 307 30226 Lead 209 Pb-209 Operational 308 30227 Lead 210 Pb-210 Operational 309 30228 Lead 211 Pb-211 Operational 310 30229 Lead 212 Pb-212 Operational 311 30230 Lead 214 Pb-214 Operational 312 30231 Astatine 217 At-217 Operational 313 30232 Radon 219 Rn-219 Operational 314 30233 Radon 220 Rn-220 Operational 315 30234 Radon 222 Rn-222 Operational 316 30235 Francium 221 Fr-221 Operational 317 30236 Francium 223 Fr-223 Operational 318 30237 Radium 223 Ra-223 Operational 319 30238 Radium 224 Ra-224 Operational 320 30239 Radium 225 Ra-225 Operational 321 30240 Radium 226 Ra-226 Operational 322 30241 Radium 228 Ra-228 Operational 323 30242 Actinium 225 Ac-225 Operational 324 30243 Actinium 227 Ac-227 Operational 325 30244 Actinium 228 Ac-228 Operational 326 30245 Thorium 227 Th-227 Operational 327 30246 Thorium 228 Th-228 Operational 328 30247 Thorium 229 Th-229 Operational 329 30248 Thorium 230 Th-230 Operational 330 30249 Thorium 231 Th-231 Operational 331 30250 Thorium 232 Th-232 Operational 332 30251 Thorium 234 Th-234 Operational 333 30252 Protactinium 231 Pa-231 Operational 334 30253 Protactinium 233 Pa-233 Operational 335 30254 Protactinium 234 metastable Pa-234m Operational 336 30255 Uranium 232 U-232 Operational 337 30256 Uranium 233 U-233 Operational 338 30257 Uranium 234 U-234 Operational 339 30258 Uranium 235 U-235 Operational 340 30259 Uranium 236 U-236 Operational 341 30260 Uranium 237 U-237 Operational 342 30261 Uranium 238 U-238 Operational 343 30262 Plutonium 236 Pu-236 Operational 344 30263 Plutonium 238 Pu-238 Operational 345 30264 Plutonium 239 Pu-239 Operational 346 30265 Plutonium 240 Pu-240 Operational 347 30266 Plutonium 241 Pu-241 Operational 348 30267 Plutonium 242 Pu-242 Operational 349 30268 Plutonium 244 Pu-244 Operational 350 30269 Neptunium 237 Np-237 Operational 351 30270 Neptunium 238 Np-238 Operational 352 30271 Neptunium 239 Np-239 Operational 353 30272 Americium 241 Am-241 Operational 354 30273 Americium 242 Am-242 Operational 355 30274 Americium 242 metastable Am-242m Operational 356 30275 Americium 243 Am-243 Operational 357 30276 Curium 242 Cm-242 Operational 358 30277 Curium 243 Cm-243 Operational 359 30278 Curium 244 Cm-244 Operational 360 30279 Curium 245 Cm-245 Operational 361 30280 Curium 246 Cm-246 Operational 362 30281 Curium 247 Cm-247 Operational 363 30282 Curium 248 Cm-248 Operational 364 30283 Curium 243/244 Cm-243244 Operational 365 30284 Plutonium 238/Americium 241 Pu-238Am-241 Operational 366 30285 Plutonium 239/240 Pu-239240 Operational 367 30286 Berkelium 249 Bk-249 Operational 368 30287 Californium 249 Cf-249 Operational 369 30288 Californium 250 Cf-250 Operational 370 30289 Californium 252 Cf-252 Operational 371 30290 Sum aerosol particulates SumAer Operational 372 30291 Sum Iodine SumIod Operational 373 30292 Sum noble gas SumNG Operational 374 30293 Activation gas ActGas Operational 375 30294 Cs-137 Equivalent EquCs137 Operational 376 30295-59999 Reserved Operational 377 60000 HOx radical (OH+HO2) Operational 378 60001 Total inorganic and organic peroxy radicals (HO2 + RO2) RO2 Operational 379 60002 Passive Ozone Operational 380 60003 NOx expressed as nitrogen NOx Operational 381 60004 All nitrogen oxides (NOy) expressed as nitrogen NOy Operational 382 60005 Total inorganic chlorine Clx Operational 383 60006 Total inorganic bromine Brx Operational 384 60007 Total inorganic chlorine except HCl, ClONO2: ClOx Operational 385 60008 Total inorganic bromine except HBr, BrONO2: BrOx Operational 386 60009 Lumped alkanes Operational 387 60010 Lumped alkenes Operational 388 60011 Lumped aromatic compounds Operational 389 60012 Lumped terpenes Operational 390 60013 Non-methane volatile organic compounds expressed as carbon NMVOC Operational 391 60014 Anthropogenic non-methane volatile organic compounds expressed as carbon aNMVOC Operational 392 60015 Biogenic non-methane volatile organic compounds expressed as carbon bNMVOC Operational 393 60016 Lumped oxygenated hydrocarbons OVOC Operational 394 60017 NOx expressed as nitrogen dioxide (NO2) NOx Operational 395 60018-61999 Reserved Operational 396 62000 Total aerosol Operational 397 62001 Dust dry Operational 398 62002 Water in ambient Operational 399 62003 Ammonium dry Operational 400 62004 Nitrate dry Operational 401 62005 Nitric acid trihydrate Operational 402 62006 Sulphate dry Operational 403 62007 Mercury dry Operational 404 62008 Sea salt dry Operational 405 62009 Black carbon dry Operational 406 62010 Particulate organic matter dry Operational 407 62011 Primary particulate organic matter dry Operational 408 62012 Secondary particulate organic matter dry Operational 409 62013 Black carbon hydrophilic dry Operational 410 62014 Black carbon hydrophobic dry Operational 411 62015 Particulate organic matter hydrophilic dry Operational 412 62016 Particulate organic matter hydrophobic dry Operational 413 62017 Nitrate hydrophilic dry Operational 414 62018 Nitrate hydrophobic dry Operational 415 62019 Reserved Operational 416 62020 Smoke - high absorption Operational 417 62021 Smoke - low absorption Operational 418 62022 Aerosol - high absorption Operational 419 62023 Aerosol - low absorption Operational 420 62024 Reserved Operational 421 62025 Volcanic ash Operational 422 62026 Particulate matter (PM) Operational 423 62027-62099 Reserved Operational 424 62100 Alnus (Alder) pollen Operational 425 62101 Betula (Birch) pollen Operational 426 62102 Castanea (Chestnut) pollen Operational 427 62103 Carpinus (Hornbeam) pollen Operational 428 62104 Corylus (Hazel) pollen Operational 429 62105 Fagus (Beech) pollen Operational 430 62106 Fraxinus (Ash) pollen Operational 431 62107 Pinus (Pine) pollen Operational 432 62108 Platanus (Plane) pollen Operational 433 62109 Populus (Cottonwood, Poplar) pollen Operational 434 62110 Quercus (Oak) pollen Operational 435 62111 Salix (Willow) pollen Operational 436 62112 Taxus (Yew) pollen Operational 437 62113 Tilia (Lime, Linden) pollen Operational 438 62114 Ulmus (Elm) pollen Operational 439 62115-62199 Reserved Operational 440 62200 Ambrosia (Ragweed, Burr-ragweed) pollen Operational 441 62201 Artemisia (Sagebrush, Wormwood, Mugwort) pollen Operational 442 62202 Brassica (Rape, Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Kale, Kohlrabi, Mustard, Rutabaga) pollen Operational 443 62203 Plantago (Plantain) pollen Operational 444 62204 Rumex (Dock, Sorrel) pollen Operational 445 62205 Urtica (Nettle) pollen Operational 446 62206-62299 Reserved Operational 447 62300 Poaceae (Grass family) pollen Operational 448 62301-65534 Reserved Operational 449 65535 Missing Operational