GCMS blank analysis results for sample AE00027, Jan-Feb 2002

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Data File : C:\MSDCHEM\1\5973N\02JAN25\0104BA.D Vial: 1 Acq On : 25 Jan 2002 10:12 am Operator: Sample : lab blank 1/4 a Inst : Instrumen Mise : January 25, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\SCAN508.M (RTE Integrator) Title : 508 scan method Library- : C:\DATABASE\WILEY7N.L ****************************************************************** * * * Peak Number 3 Monomethylnitrosamine Concentration Rank 8

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

4.25 0.07 ug/L 29171 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Monomethylnitrosamine 60 CH4N20 064768-29-2 9 2 Oxirane, (2-methylpropyl)- $$ Pe... 100 C6H120 023850-78-4 9 3 3-Methyl-2,3-epoxybutanal 100 C5H802 000000-00-0 9 4 Formic acid, 2-methylpropyl ester 102 C5H10O2 000542-55-2 9 Abundance Scan 77 (4.253 min): 0104BA.D (-) m/z 85.10 100.00% 8$ 43

5000 39 60 A 'TTTPrrTrr. ‘ । TTTTT 4.00 4.20 4.40 4.60 49 m/z 43.10 72.41% ’' I " " I'1" I'1" I " TITHTTTTT in i |n।. .i 11.... ।. n | 1 । |I H I | ■ I I ' I M n/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 Abundance #694: Monomethylnitrosamine 43 8000 30 4.00 4.20 4.40 4.60 6000 60 m/z 41.10 66.06% 4000 TTTTTTTH " i" " i" I ‘ ‘" I' “' I TU—muu"u‘annBO*TTT n/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 Abundance #8521: Oxirane, (2-methylpropyi)- $$ Pentane, 1,2-epoxy-4-.. 85 41 55 4.00 4.20 4.40 4.60 5000 27 m/z 39.10 30.68%

A 49 69 I" " I TTTTHTTTT I ‘ ‘‘I 111<1111,111 ■ ■ ■ ■ ।■।■■11111 1TT—TTTTTDT m/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105 Abundance #7969:3-Methyl-2,3-epoxybutanal 41 85 4.00 4.20 4.40 4.60 m/z 60.00 27.20% 5000 60

, 100 ----- TTIU‘UIN1‘11‘T7TTTTTTT TpTTTp-rrrp-rrr I • " | I t ' > | ' I | I I U| I I 1 1 I ' 1 ' ' I n/z—> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 4.00 4.20 4.40 4.60

0104BA.D SCAN508.M Mon Jan 28 09:50:06 2002 Page 5

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