Analytical commentary for sample AD28157 dated November 29, 2001, noting no unusual compounds but low recovery rates for LCS standards.
NYC-WTC_000033800–000033815Folder label: “GCMS X 11/20/01 A 11/26/01”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Library Search Compound Report Data File : C:\HPCHEM\1\DATA\NOV2601\28157.D Vial: 16 Acq On : 27 NOV 2001 1:22 am Operator: 209 GALOS Sample : 11/20 scan Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\GCMS1126.M (RTE Integrator) Title : 209 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 7 3,6-Dioxa-2,4,5,7-tetrasilaoct Concentration Rank 2
R.T. EstConc Area Relative to ISTD R.T.
43.98 6.41 ug/1 776451 Perylene-dl2 37.12
Hit# Of 5 Tentative ID MW MolForm CAS# Qual 1 3,6-Dioxa-2,4,5, 7-tetrasilaoctane, 294 C10H3002Si4 004342-25-0 25 2 Ethanedioic acid, bis(trimethylsily 234 C8H1804Si2 018294-04-7 22 3 1,2-Benzenedicarboxylic acid, bis(t 310 C14H2204Si2 002078-22-0 17 4 Mercaptoacetic acid, bis(trimethyls 236 C8H20O2SSi2 006398-62-5 12 Abundance Scan 4241 (43.978 min): 28157.D (-) m/z 73.00 100.00% 73 147 221 5000 281 355 I I 429 43.60 43.80 44.00 44.20 44.40
m/z-> .40....... 60 80 117--—191....... ........... 100120140160180200220240260280300320340360380400420 m/z 147.0075.85% Abundance #41682: 3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5.5,7,7- 147 221
73 5000 i ) in fi |< , । । I । । TTT । i 4360 43.80 44.00 44.20 44.40 191 m/z 221.05 64.09% 117 279 mmmm. mmkk mpmmmmmpm ]> < "I I'll I" "I "■■I'll • m/z—> 40 60 80 100120140160180200220240260280300320340360380400420 Abundance #71006: Ethanedioic acid, bis(trimethylsilyl) ester 73
147 43 60 43.80 44.00 44.20 44.40 5000 m/z 281.00 31.90%
45 190 219 1— ' i11L 117 "i',r Tn. Tm TVTTTTTTTCTTTUTCTTTETTCTTTTT ’ ' I " "I I | " I T| .T. . I 40 60 80 100120140160180 200220240260280300320340360380400420 m/z—> Abundance #72972: 1,2-Benzenedicarboxylic acid, bis(trimethylsilyl) e 147 43.60 43.80 44'00 44.20 44'40 m/z 207.00 25.21% 73 5000
45 295
m/z-> X ' I'1" I ।1. 193 221 119 . TTTTTT mm > ■ 111 rl j r r> > | <. 11.. > 11 < i > < 11 < > > ! ■. 111111111
40 60 80 100120140 160180 200 220 240 260 280 300 320 340 360 380 400 420 "T 43.60 43.80 44.00 44.20 44.40 T"
28157.D GCMS1126.M Wed Nov 28 09:13:55 2001 Page 7
NYC-WTC_000033813
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000033765
Analytical commentary for sample AD28149 dated November 29, 2001, noting no unusual compounds but low recovery rates for LCS standards.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000033834
Analytical commentary for sample AD28155 dated November 29, 2001, noting detection of bis(2-Ethylhexyl)phthalate and low recovery rates.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000033752
Analytical commentary for sample AD28159 dated November 29, 2001, noting no unusual compounds but low recovery rates for LCS standards.
1 shared topics · Same agency, volume and box · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034830
Laboratory analyst notes on GCMS scan results and recovery rates for sample AD28666 analyzed in early December 2001.
1 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034180
Laboratory report detailing GCMS analysis of sample AD28269 conducted on November 30, 2001.
1 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034331
Laboratory report documenting GCMS analysis of sample AD28427 conducted between November 21 and 26, 2001.
1 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034198
Laboratory report detailing GCMS analysis of sample AD28263 conducted between November 21 and 26, 2001.
1 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035700
Laboratory notes stating the GCMS scan of sample AD28901 revealed no unusual compounds.
1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034213
Laboratory report detailing GCMS analysis of sample AD28271 conducted on December 6, 2001.
1 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034988
Laboratory report noting contamination from the TurboVap concentrator and recovery rates for sample AD28662.
1 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034886
Laboratory analyst notes on GCMS scan results and recovery rates for sample AD28479 analyzed in early December 2001.
1 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034808
Laboratory analyst notes on GCMS scan results, recovery rates, and low pH conditions for sample AD28649.
1 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Page similarity is temporarily unavailable or this page has no indexed vector.
Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
NYC-WTC_000033704
Department of Environmental Protection record logging GCMS X samples from November to December 2001.
Filed in the same folder
NYC-WTC_000033705
Fragmented page from a GCMS-related record dated between November 20 and 26, 2001, likely part of the WTC environmental monitoring series.
Filed in the same folder
NYC-WTC_000033707
Laboratory report of a GCMS blank analysis for sample AD28143 conducted on November 28, 2001, listing various organic compounds below detection limits.
Filed in the same folder
NYC-WTC_000033723
Calibration record for GCMS instrument 209 using method GCMS1126, dated November 26-28, 2001, listing standard compounds and retention times.
Filed in the same folder
NYC-WTC_000033726
Laboratory report of a GCMS reference analysis for sample AD28143 conducted on November 28, 2001, listing detected compounds and retention times.
Filed in the same folder