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GCMS blank analysis results, sample AE11799, May 2002

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Gas chromatography-mass spectrometry blank analysis for sample AE11799 showing results below method reporting limits for semivolatile organic compounds, dated May 28, 2002.

NYC-WTC_000012751–000012778

Folder label: “GCMS X 5-21-02 A 5-22-02

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\052202\521LB.D Vial: 3 Acq On : 22 May 2002 3:27 pm Operator: Mclean Sample : 5/21 ad 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 19 2,6-Dimethyl-3,4-bis(trimet... Concentration Rank 19 R.T. EstConc Area Relative to ISTD R.T. 37.72 0.41 ug/L 161972 Perylene-dl2 34.66 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2,6-Dimethyl-3,4-bis(trimethylsi... 311 C15H29NO2Si2 1000079-52-1 1 2 Benzo[b]selenophene-2-carbonitri... 221 C10H7NSe 037007-55-9 9 3 Benzo[b]selenophene-3-carbonitri... 221 C10H7NSe 037007-54-8/9 4 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-v 6 9 Abundance Scan 5895 (37.716 min): 521 LB.D (-5884) (-) m/z 221.10 104 .00% 73 147 2.11

5000 281 429 355 96

miz-> Abundance o1 44 ■' i 50 1 100 - 150 191 200 250 300 350 #87845: 2,6-Dimethyl-3,4-bis(trimethylsilyloxymethy!)pyridine 400 37.40 37.60 37.80 38.00 m/z 73.10 85.95%

221 73

5000 147 37.40 37.60 37.80 38.00 178 m/z 147.00 84.71 45 0- 15 ... kii ... 92 1201. r1nr 44 266 296 m/z-> 50 100 150 200 250 300 350 400 Abundance #87883: Benzo[b]selenophene-2-carbonitrile, 3-methyl- 221 • ■ i • . ■ ‘ j 140 37.40 37.60 37.80 38.00 5000 m/z 207.05 45.97%

. 117 npwwwrWWMWNwi nz-> 0- ’ 50 63 88 I it f i il 100 150 A194 1

200 250 300 350 400 Abundance #87882: Benzo[b]selenophene-3-carbonitrile, 2-methyl- 221 '37'40 37.60 37.80 38.00 ‘ 140 m/z 281.00 45.25 5000

0- 63 00 113 1 I s > । lli -4 1.......... .......... 194 ■ ‘ I ' 1 ■' 1 1 1 1 1 1 1 1 1 1 1 1 1 n/z—> 50 100 150 200 250 300 350 400 37.40 37.60 37.80 38.00

521LB.D 052202.M Tue May 28 11:58:11 2002 Page 22

NYC-WTC_000012776

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