VOC analysis results, sample AE03947, Feb 22 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\HPCHEM\1\DATA\02feb21\3966.D Vial: 10 Acq On : 21 Feb 2002 5:08 pm Operator: 201-wb Sample : nyc; Inst : GC/MS Ins Mise Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\HP021702.M (RTE Integrator) Title : VOCs BY EPA METHOD 524 Library : C:\DATABASE\NBS75K.L

Peak Number 4 Benzene, 1,4-difluoro- Concentration Rank 3 R.T. EstConc Area Relative to ISTD R.T. 15.82 0.05 ug/L 55454 1,4-DIFLUOROBENZENE 15.15 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Benzene, 1,4-difluoro- 114 C6H4F2 000540-36-3 83 2 Benzene, 1,2-difluoro- 114 C6H4F2 000367-11-3 83 3 Benzene, 1,3-difluoro- 114 C6H4F2 000372-18-9 72 4 2,4-Imidazolidinedione, 5-methyl- 114 C4H6N202!________ 000616-03-5 9 Abundance Scan 696 (15,817 min): 3966.D (-) m/z 114.15 100.00%! 1 4

5000

, 63 88 15.60 15.80 16.00 16.20 44 50 57 | m/z 88.10 21.78% 11PI-—PP 1 i ■ ■ ■ ‘ i ■ ■ ■ ■ i ■ m/z-> 30 40 50 60 70 80 90 100 110 120 Abundance #64097: Benzene, 1,4-difluoro- 1 4

5000 15.60 15.80 16.00 16.20 63 m/z 63.05 19.76% 88 50 57 75 81 94 /Z-> TUiB 30 -++ 40 50 60 70 80 ■ । ■ । • 1 1 ' I'1 1 i • ■ • ■ i ■' 90 100 110 i 120 / Abundance #64096: Benzene, 1,2-difluoro- 1 4

15.60 15.80 16.00 16.20 5000 m/z 50.05 14.01%

63 88 37 —1* 50 57 |. 75 < । ■ ■ • ■ । ■ — 94 i m/z-> 30 40 50 60 70 80 90 100 110 120 Abundance #2865: Benzene, 1,3-difluoro- 1 4 2U8 15.60 15.80 16.00 16.20 m/z 44.00 11.62%

5000 AWAww 63 88 50 57 75 81 94 _____ I • I----- I J ' • T T Tt8 rn/z--> 30 40 50 60 70 80 90 100 110 120 | 15.60 15.80 16.00 16.20

3966.D HP021702.M Thu Feb 21 17:49:34 2002 Page 4

NYC-WTC_000020285