25 1001 Brian Heikes University of Rhode Island HPLC Peroxides From Coil Collection SONEX 1 1 1997 11 12 1998 03 15 0 mid-time of sample in UT (s) 4 1.0 1.0 1.0 1.0 999999 999999 99999 99999 start-time of sample in UT (s) end-time of sample in UT (s) H2O2 (pptv) CH3OOH (pptv) 3 data for exchange reported data is not positive definite negative values denote lower limit of detection or upper limit of detection 4 Peroxide measurements used the method of Lee et al., JAOTech., 1995. data below detection limit ( h2o2=15; ch3ooh=25 pptv ) reported as -888 data greater than that which is recordable is reported as -777 mid start stop h2o2 ch3ooh 35715 35670 35760 66 -888 35835 35760 35910 99999 -888 35985 35910 36060 66 -888 36135 36060 36210 -888 -888 36285 36210 36360 77 -888 36435 36360 36510 -888 -888 36585 36510 36660 77 -888 36735 36660 36810 99999 -888 36885 36810 36960 88 -888 37035 36960 37110 -888 -888 37185 37110 37260 44 99999 37335 37260 37410 -888 -888 37485 37410 37560 66 -888 37630 37560 37700 -888 -888 37780 37700 37860 88 -888 37950 37860 38040 99999 -888 38100 38040 38160 77 -888 38250 38160 38340 -888 -888 38400 38340 38460 99999 31 38543 38460 38625 99999 -888 38693 38625 38760 132 45 38835 38760 38910 99999 99999 38985 38910 39060 154 99999 39135 39060 39210 99999 -888 39285 39210 39360 132 91 39440 39360 39520 99999 99999 39590 39520 39660 176 99999 39735 39660 39810 99999 99999 39885 39810 39960 198 91 40035 39960 40110 99999 99999 40185 40110 40260 242 76 40335 40260 40410 99999 99999 40485 40410 40560 275 61 40635 40560 40710 99999 99999 40785 40710 40860 440 45 40935 40860 41010 99999 99999 41085 41010 41160 406 45 41235 41160 41310 99999 99999 41385 41310 41460 440 45 41535 41460 41610 99999 99999 41685 41610 41760 396 45 41910 41760 42060 406 45 42210 42060 42360 385 45 42510 42360 42660 396 45 42810 42660 42960 286 45 43110 42960 43260 297 31 43410 43260 43560 330 61 43710 43560 43860 220 91 44010 43860 44160 165 76 44310 44160 44460 110 91 44610 44460 44760 330 45 44910 44760 45060 330 31 45210 45060 45360 330 45 45510 45360 45660 285 -888 45810 45660 45960 231 31 46110 45960 46260 187 45 46410 46260 46560 176 61 46710 46560 46860 165 61 47010 46860 47160 198 76 47310 47160 47460 198 76 47610 47460 47760 242 61 47910 47760 48060 220 76 48210 48060 48360 242 76 48510 48360 48660 440 76 48810 48660 48960 561 107 49110 48960 49260 594 107 49410 49260 49560 594 122 49710 49560 49860 516 107 50010 49860 50160 417 61 50310 50160 50460 484 45 50610 50460 50760 363 31 50910 50760 51060 165 -888 51210 51060 51360 154 31 51510 51360 51660 55 -888 51810 51660 51960 55 -888 52110 51960 52260 55 -888 52410 52260 52560 22 -888 52710 52560 52860 66 -888 53010 52860 53160 55 -888 53310 53160 53460 -888 -888 53610 53460 53760 33 -888 53910 53760 54060 44 -888 54210 54060 54360 33 -888 54510 54360 54660 99999 -888 54810 54660 54960 22 -888 55260 54960 55560 44 -888 55710 55560 55860 55 -888 56160 55860 56460 99 -888 56760 56460 57060 55 31 57210 57060 57360 99 31 57510 57360 57660 99 -888 57810 57660 57960 77 45 58110 57960 58260 66 31 58410 58260 58560 44 31 58710 58560 58860 22 -888 59010 58860 59160 -888 -888 59310 59160 59460 -888 -888 59610 59460 59760 -888 -888 59910 59760 60060 -888 -888 60210 60060 60360 -888 -888 60600 60360 60840 -888 -888