CH3C(O)C2H5 (2-butanone, methyl ethyl ketone (MEK)) photolysis cross-sections @ 1 bar, 298 K IUPAC 2005 Recommendation http://www.iupac-kinetic.ch.cam.ac.uk R. D. Martinez, A. A. Buitrago, N. W. Howell, C. H. Hearn, and J. A. Joens, Atmos. Env. 26A, 785 (1992) Photolysis QY (CH3CO + C2H5): Average of the optimised QY used in the evaluation of the MCM and SAPRC-99 using chamber data: 1. Carter, 2000. Documentation of the SAPRC-99 chemical mechanism for VOC reactivity assessment. Final Report to California Air Resources Board Contract 92-329 and Contract 95-308, Air Pollution Research Center and College of Engineering Center for Environmental Research and Technology University of California Riverside, California. 2. Pinho et al., Atmos Env, 39(7), 1303-1322 (2005) phi1 (CH3CO + C2H5) = 0.16 from 275 to 380 nm (1 bar, 298K) see AtmosEnvPinho05 for details (NB: IUPAC 2005 Recommendation phi1 = 0.34 from 275 to 380 nm) wavelength (nm) sigma (cm2) 202 1.41E-20 206 1.92E-21 210 1.60E-21 214 1.83E-21 218 2.25E-21 222 2.90E-21 226 3.91E-21 230 5.34E-21 234 7.42E-21 238 1.03E-20 242 1.41E-20 246 1.89E-20 250 2.45E-20 254 3.09E-20 258 3.74E-20 262 4.39E-20 266 4.96E-20 270 5.40E-20 274 5.68E-20 278 5.77E-20 280 5.74E-20 281 5.72E-20 282 5.68E-20 283 5.62E-20 284 5.54E-20 285 5.44E-20 286 5.35E-20 287 5.26E-20 288 5.17E-20 289 5.06E-20 292 4.60E-20 293 4.42E-20 294 4.24E-20 295 4.08E-20 296 3.93E-20 297 3.79E-20 298 3.65E-20 299 3.48E-20 300 3.30E-20 301 3.10E-20 302 2.89E-20 303 2.69E-20 304 2.50E-20 305 2.33E-20 306 2.17E-20 307 2.02E-20 308 1.88E-20 309 1.73E-20 310 1.58E-20 311 1.42E-20 312 1.28E-20 313 1.14E-20 314 1.01E-20 315 8.96E-21 316 7.94E-21 317 6.97E-21 318 6.11E-21 319 5.31E-21 320 4.57E-21 321 3.89E-21 324 2.29E-21 325 1.89E-21 326 1.56E-21 327 1.29E-21 328 1.05E-21 329 8.50E-22 330 6.70E-22 331 5.40E-22 332 4.20E-22 333 3.30E-22 334 2.50E-22 335 2.00E-22 336 1.40E-22 337 1.10E-22 338 8.00E-23 339 7.00E-23 340 5.00E-23 341 5.00E-23 342 3.00E-23 343 3.00E-23 344 2.00E-23 345 1.00E-23 346 1.00E-23 347 0 348 1.00E-23 349 0 350 0