GCMS blank analysis results for VOCs, May 6-13 2002

NYC 9/11 Public Portal Document LLDLdLY DedLti COIpOUIU Kepui L

Data File : C:\MSDCHEM\l\DATA\020513\0506LB.D vial: 3 Acq On : 13 May 2002 2:29 pm Operator: Nefliu Sample : 05/06 lab blk Inst Instrumen Mise : Multiplr: 1.00 MS Integration Params: rteint.e

Quant Method : C:\MSDCHEM\1\METHODS\SCAN020507.M (RTE Integrator) Title : Method 508 GC/MS Scan Library : C:\DATABASE\nist98.1 ********************************************************************* Peak Number 1 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T.

6.16 15.15 ug/1 1240040 1,4-Dichlorobenzene-d4 11.37

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 59 2 2 -Pertanone , 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 45 3 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 37 4 Acetic acid, cyano-, 1,1-dimethy... 141 C7H11NO2 001116-98-9 25 Abundance I Scan 524 (6.158 min): 0506LB.D (-517) (-) m/ z 43.05 100.00% 43

59 5000

101 I I I < I I I I I I I I I I 1 I I J I I I I I 5.80 6.00 6.20 6.40 6.60 . ....35i1, 514 '' 1101 69 83 ' I ' • ' ' I ' ' 1 r I ' - > I I I ‘> ..... 156 m/z 59.10 51.35% m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 i r~। i i i i ] । । Hi । । i i V | । । i i । r 59 580 6.00 6.20 6.40 6.60 m/z 58.05 18.69% 15 31 101 83 /z—> TTII 11,, 1 111 ,, 14 . 51, I ' 1 ' ■ i ' ■ ■ ■ i ''' ' ' I ' > I I | I I I ! | I I I I | I I I I [ I I I I | I I I ! | ! I I 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 1 1 | ‘ 1 1 | ' ■ ' ' | ImFt’i TI | I 580 6.00 6.20 6.40 6.60 5000 59 m/z 101.10 16.67%

31 111r ■ ■1111 |l|li1111’ '"I"'!'1100011001111000 —0—0—————— 83 93 101 m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- ■ ' i 1 ‘ ' i 1 ■ ■ 1 1 1 11Tt 11’III 43 5.80 6.00 6.20 6.40 6.60 m/z 41.10 7.28% 5000

59 101 67 83 91 m/z-> —35 +TITTTT 51 , 1 i| I i i < । । । > ■ । । । i । । r '11111'11 ■ ‘ ■ i111 ■ i11111 11 ■ ■ i1'11111 t A i*' r i nm i — FPTPAP*—Pr 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 5.80 6.00 6.20 6.40 6.60

0506LB.D SCAN020507 .M Tue May 14 15:47:16 2002 Page 3

NYC-WTC_000045692