Document 44dYOyJBrydgRJR3M5ZevNqZj

SAMPLING VARIABLE CONCENTRATION 3M 106756 TOLUENE VARIABLE CONCENTRATION RH-80% TIME WEIGHTED AVERAGE CONCENTRATION (ppm) r r /y / 2 3M-OVM Mass Balance 3M-OVM Charcoal Tube Mass Balance 246 243 -- ^ r V |---------- 468 SAMPLING TIME (hrs) 20 479 108 19 477 108 180 5 178 ---- -- 196:7 1958 179 AT VARIOUS CHALLENGE CONCENTRATION CO cor> sJ U1 00 SAMPLING A MIXTURE AT VARIOUS CHALLENGE PROFILES Challenge Profile 1 Mass Balance 3M-OVM 8 Hrs 2 Mass Balance 3M-OVM 8 Hrs 3 Mass Balance 3M-OVM VA 1 8 Hrs 4 Mass Balance | 3M-OVM 7 8 Hrs Concentration 2 sd (ppm) MEK HEXANE ETHYL 1,1,2,2 TETHA BENZENE CHLOROETHANE 227 228 9 (82%) 137 124 6 (91%) 165 170 8 (l03%) 20.3 19.7 1 1 (97%) 215 189 13 (88%) 107 100 6 (93%) 129 1369 (105%) 15.8 14.5 1 (92%) 222 17113 (77%) 110 104 3 (95%) 132 140+8 (l06%) 16.3 14.4 .6 (88%) 156 156 12. (100%) 80 80 6 (100%) 106. 99+8 (94%) 10.8 10.0 .3 (93%) 3M 106759 I SAMPLING A MIXTURE OF DICHLOROMETHANE AND PERCHLOROETHYLENE Ch o k - - ------------------------ ----------------- ' SAMPLING PERCHLOROETHYLENE WITH MONITORS PRELOADED WITH DICHLOROMETHANE O car* -si <T> SAMPLING A MIXTURE OF TRICHLOROETHYLENE AND PERCHLOROETHYLENE 85% - RH 3M OVM 3M OVM O Nl a\ tsj MONITOR RETENTION OF PRELOADED TRICHLOROETHYLENE WHEN EXPOSED TO AIR AT 85% RH 20 16- ab 12- A be 0) 8 4- V 4--------- --m---------- v i--|--i--i--i--i--i--i--i--r 2 4 6 8 10 Exposure time (hrs) 3M 106763 W e ig h t Collected (mg) SAMPLING PERCHLOROETHYLENE WITH MONITORS PRELOADED WITH TRICHLOROETHYLENE 85% -RH 3M 106764 W e ig h t Collected (mg) SAMPLING PERCHLOROETHYLENE WITH MONITORS PRELOADED WITH TRICHLOROETHYLENE 85% - RH 3H 106765 SAMPLING PERCHLOROETHYLENE WITH MONITORS PRELOADED WITH TRICHLOROETHYLENE 85% - RH 3H 1D6766