GCMS blank analysis results, sample AE12288, June 2002

NYC 9/11 Public Portal Document Llprary aearen compound Report •Data'File : C:\MSDCHEM\l\DATA\052902\LB.D Vial: 4 Acq On : 29 May 2002 12:32 pm Operator: McLean Sample : gc/ms scan 5/24 Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title ' : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L

Peak Number 2 2-Butenal, 2-methyl- Concentration Rank 2

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

3.74 4.19 ug/L 2514010 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 2-Butenal, 2-methyl- 84 C5H80 001115-11-3 5 2 2-Butenal, 3-methyl- 84 C5H80 000107-86-8 5 3 Krypton 84 Kr 007439-90-9 4 4 l-Penten-3-one 84 C5H80 001629-58-9 4 Abundance Scan 113 (3.743 min): LB.D (-111) (-) m/z 84.00 100.00% 84

5000 35 38 41 48 58 ■ ’ I***’I’***+’’1’1’411* 51 | 3.40 3.60 3.80 4.00 37 m/z 86.00 47.14% 0! ■ ■ i ■ ■ ■ ■ i ■ •1 ■ i ■ ■ ■ ■ i “ ‘ ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i ■ *mp miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 _/ Abundance #116563:2-Butenal, 2-methyl- 55 84

5000 29 3.40 3.60 3.80 4.00 41 m/z 38.00 29.34% 26 44 51 | I I I I । ii rt-| 11 I I -9 36 — m/z-> 01 mle mput 20253035404550556065 70 75 80 85 90 95 -hTTT

Abundance #33657:2-Butenal, 3-methyl- 84 55 41 3.40 3.60 3.80 4.00 5000 m/z 41.10 25.53% 29

26 3&. ,44 51 65 69 o 1111"11' ' 1’ ■... P11 | 111,11 + 111111 —59 mmmmpmp - miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #33829: Krypton 84 3.40 3.60 3.80 4.00

/X m/z 35.10 23.20% 5000

42 80 0 • q *« > • I. i i n'1 i i 11 ■' i “ “ i ■ ■ 1 i ■ ■ ' ‘ ■ ■ ■ i ■ ■ ■ 1 i ' ■ ■ ■ i 1 miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.40 3.60 3.80 4.00

LB.D 052202.M Mon Jun 03 09:27:11 2002 Page 5

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