GCMS blank analysis results for sample AE10812, May 2002

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Data File : C:\MSDCHEM\1\DATA\020521\0517LB2.D Vial: 4 Acq On : 21 May 2002 11:22 am Operator: Nefliu Sample : 05/17 lab blk ad Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: rteint.e Quant Method : C:\MSDCHEM\1\METHODS\SCAN020521.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. 6.15 12.16 ug/1 858751 1,4-Dichlorobenzene-d4 11.38 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 78 2 2 - Pent anone, 4-hydroxy-4 -methyl- 116 C6H1202 000123-42-2 72 3 2 - Pent .anone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 50 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H1202 000540-88-5 25 Abundance Scan 523 (6.152 min): 0517LB2.D (-518) (-) m/z 43.05 100.00% 43

5000 59

101 ' ' i ' ' ■ ■ i ' ■ 1 ■ i ■ ■ 1 ' I' ' ■ ■ i ' 64 69 83 | 5 80 6.00 6.20 6.40 ........381) 53 ol 11* I I I ’ I’’ 1 i 1 -T++ > | 1 > ■ < । । 1 । ■ । <11 ■ > । ■ । 1 : । f > > । । । m/z 59.10 45.32% n/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 5 80 6.00 6.20 6.40 m/z 58.05 21.52% 15 31 101 53 , 83 01 ...... 1...... . I Il 1———I——TTTTT n/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 orm 1’11 4 1TTnm" 1 , 5 80 6.00 6.20 6.40 5000 59 m/z 101.10 16.89%

22 101। n/z-> 01 ......... 10 20 29.71 30 .38,140 . ......... ‘I 60 50 83 93 I ' ' ' ' i ' ' ' ' i 1 ' ' ‘ i ' ' ‘ ' i ' ' ' ' i ' 70 80 90 100 110 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 1 • i ■ ■ 1 1 । । > 1 1 । 1 1 111785 । । . 43 580 6.00 6.20 6.40 m/z 41.05 6.93%

5000 59 . 101 0 ............ 27.32 38,1 +48,53+ 11 1 1 1 1 ' i ■ 1 1 1 r1 1 1 1 1 1 67 72 77 83 91 96, | Tif rPr PI nri । , OMMrimmi n/z—> 10 20 30 40 so 60 70 80 90 100 110 5.80 6.00 6.20 6.40

0517LB2.D SCAN020521.M Tue May 28 11:28:50 2002 Page 3

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