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← Document results/DEP Box 25/GCMS X 4/25/02 A 5/7/02
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GC/MS blank analysis results, sample AE09684, May 2002

Machine-extracted title · confidence 90%

Laboratory report documenting a method blank analysis for GC/MS testing of volatile organic compounds from May 2002.

NYC-WTC_000043749–000043755

Folder label: “GCMS X 4/25/02 A 5/7/02

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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File C:\MSDCHEM\l\DATA\020507\0425LB.D Vial: 3 Acq On 7 May 2002 2:09 pm Operator: Nefliu Sample 04/25 lab blk Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: rteint.e Quant Method : C:\MSDCHEM\1\METHODS\SCAN020507.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 12.88 ug/1 1165880 1,4-Dichlorobenzene-d4 11.37

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 78 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 45 3 2-Propanol, 2-methyl- 74 C4H10O 000075-65-0 23 4 2-Hexanol, 2-methyl- 116 C7H160 000625-23-0 9 Abundance Scan 522 (6.146 min): 0425LB.D (-517) (-) m/z 43.10 100.00% 43 59 5000

101 ■ ■ । 1 > 1 1 । 1 1 r 1 i 1 1 ■T-rT 1 r1 69 83 88 , | 5.80 6.00 6.20 6.40 Of ....................................... 38 I 51 । m/z 59.10 50.14% 1 1 i 1 1 1 1 n 1 1 ' । 1 । ' । । +*i ' pl da*I’’’*1**11+’’I*I*L m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 ' ' I ■ 1 ' ' I 1 ' ' ' I ' '' 1 I r 1 1 1 1 1 5.80 6.00 6.20 6.40 m/z 58.10 20.14% 31 — 92 93 101 — —..... 26,1,1,138, । । । । । ।' । 83 । i 1 1 1 ' i 1 ■ r 1 i ' ■ 1 1 i 1 1 ■ ' i ' 1 1 1 I T Tl/Z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43 ' 1 i ' ' ' ' i ■ ' 1 1 i 10n7 | 715 । | * 5.80 6.00 6.20 6.40 5000 m/z 101.10 15.34% 59

15 31 101 ,.,. ,r.,, 26,1,381 —1 I 53' ''l, 1 I [ I FT I | I I I I | I I TTT 1 I ' ■1 ' i ' ' ' ■ i 83 , | r ■ i ' 1 1 1 i 1 11 । lr /z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #113151: 2-Propanol, 2-methyl- 59 5.80 6.00 6.20 6.40 m/z 41.10 6.77% 5000 31 41

rn/z—> - 10 .... 20 -W30 , , I,1. 40 50 II 50 i60 ■ I ■ ■ • ■ । ■ ■ ■ ■ । > ■ ■ ■ । ’ ■ • > । 70 80 90 100 । 1 > । । 110 1 «“l r • ■ 1 f' ‘ 1 1 i ITTMni’i । । 5.80 6.00 6.20 6.40

0425LB.D SCAN020507.M Thu May 09 10:55:24 2002 Page 3

NYC-WTC_000043754

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NYC-WTC_000043754Source: NYC Law Department, mirrored locally

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