GCMS blank analysis results for sample AE09152, April 2002

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Laboratory report showing GCMS blank analysis for sample AE09152 conducted between April 17 and April 24, 2002.

NYC-WTC_000046386–000046392

Folder label: “GCMS X 4/17/02 A 4/24 - 4/26/02”

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NYC 9/11 Public Portal Document

• Data File : C:\MSDCHEM\1\DATA\020424\0417LB.D Vial : 4 Acq On : 24 Apr 2002 12:44 pm Operator: Nefliu Sample : 04/17 lab blk Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: rteint.e Quant Method : C:\MSDCHEM\1\METHODS\SCAN020424.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 13.35 ug/1 1661560 1,4-Dichlorobenzene-d4 11.38

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4 -hydroxy-4 -me thyl- 116 C6H12O2 000123-42-2 83 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 56 3 5-Hexen-2-one 98 C6H10O 000109-49-9 9 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H1202 000540-88-5 9 Abundance Scan 525 (6.164 min): 0417LB.D (-520) (-) m/z 43.10 100.00% 43

5000 59

101 ■ ' i 1 1

67 72 83 88 , | 5.80 6.00 6.20 6.40 6.60 ...................................... 3^ i 53 , m/z ' 1 I ' 1 ' 1 I 1 1 1 1 rIt 1 ' 1 I 11’* I 1 ■ ■ ■ i ■ ■ ' ' i 1 '' 1 1 i 1 r ■ ' i 1 ■ 1 1 i ■ 59.10 44.89% m/z-> 10 20 30 40 50 ।60 70 80 90 100 110 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 4(3

5000 59 580 6.00 6.20 6.40 6.60 m/z 58.10 19.92% 15 101

m/z-> .... ,1 ,i ,' '26, 10 20 3] , 38,1, 1 1 । 1 1 ' 1 1 1 30 40 -53++ 50 60 70 83 ■ i ■ ' ' 1 i * ■ 80 1 1 i 1 90 . ................. 100 110 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 ........................ —.............. 5.80 6.00 6.20 6.40 6.60 5000 59 m/z 101.10 16.49%

93 93 101 — /z- > .........29,31.39,1 10 20 30 40 50 60 70 80 °3 90 । 100 110 Abundance #5001:5-Hexen-2-one ~'i 1 ' 1 ’ i ' ■ ■ i ■ r ' ■ i ■ 1 4(3 5.80 6.00 6.20 6.40 6.60 m/z 41.20 6.24% 5000

55 15 27 +11, 20,111132, 38,1 50 +—r - 60 65 71 77 83 98 • '“T-1 1 II*‘‘III‘II ii | । । i । । 1d17B"d n/z-> 10 20 30 40 50 60 70 80 90 100 110 5.80 6.00 6.20 6.40 6.60

0417LB.D SCAN020424.M Fri May 03 11:36:25 2002 Page 3

NYC-WTC_000046391

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