Analytical commentary for sample AD28141 dated December 6, 2001, noting detection of bis(2-Ethylhexyl)phthalate and low recovery rates.
NYC-WTC_000033856–000033864Folder 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\DECO5O1\28161. D Vial: 8 Acq On 5 Dec 2001 7:28 pm Operator: 209 GALOS Sample re extract Inst : GC/MS 209 MisC : 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 1 Silane, tetramethyl- Concentration Rank 1
R.T. EstConc Area Relative to ISTD R.T. 7.64 4.46 ug/1 1034800 1,4-Dichlorobenzene-d4 11.72
Hit# of 5 Tentative ID MW MolForm CAS# Qual
1 Silane, tetramethyl- 88 C4H12Si 000075-76-3 9 2 N-Ethylformamide 73 C3H7NO 000627-45-2 9 3 1, 3-Dioxolane, 2-(3-bromo-5,5,5-tri 352 C10H16BrC13O2 000000-00-0 9 4 3-Pentanol, 3-methyl-________________ 102 C6H140 000077-74-7 9 Abundance Scan 283 (7.639 min): 28161 .D (-) m/z 73.00 100.00% 73
5000 43 ________ / — I ' ' ' ' I ' ' 11 TICITT 7.20 7.40 7.60 7.80 8.00 37, |, | 49 55 , 67, । t......... 87............. 103.................... 0- 1 ' I 1 ' 1 1 I ' ' ' ' I 1 ‘ 2 i'i'I'i . . । . . . i । . i . . | . m/ z 43.05 26.04% m/z--> 10 20 30 40 50 60 70 80 90 100 110 120 Abundance #62932: Silane, tetramethyl- 73
5000 7.20 7.40 7.60 7.80 8.00 m/z 41.00 9.88% 45 15 | 53 59 -TH— 44’ । r |..........88 m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 Abundance #292: N-Ethylformamide 33 73 -P-------==T=====p==== 7.20 7.40 7.60 7.80 8.00 5000 m/z 44.95 9.67% 44 58
mfe-> —1—.... 1—— 10 20 ;30 40 50 60 70 l । 80 ‘ • i • i • ■ । 90 100 ‘ 110 । • ■ ■ ■ । * > . ’ । > i < • 120 Abundance #49423:1,3-Dioxolane, 2-(3-bromo-5,5,5-trichloro-2,2-dimet ------------- - - — 73 7.20 7.40 7.60 7.80 8.00 m/z 71.00 6.86%
5000 -
45
...............3611 । 55 • I < < 67.• • । « P —IPPPPPT ■ ■ i ■ 1 ' ' I 1 1 ' 1 i 1 ' 1 ■ | • • • ' 109115 ----- m/z—> 10 20 30 40 ‘50 60 70 80 90 100 110 120 7.20 7.40 7.60 7.80 8.00
28161.D GCMS1126.M Thu Dec 06 08:35:43 2001 Page 1
NYC-WTC_000033863
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_000033865
Gas chromatography-mass spectrometry analysis of sample AD28141 showing no unusual compounds detected; method acceptance ranges to be established and used.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000033874
Laboratory report detailing GCMS scan results and recovery rates for environmental sample AD28147 analyzed in December 2001.
1 shared non-person entities · Same agency, volume and box · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000033847
Analytical commentary for sample AD28163 dated December 6, 2001, noting no unusual compounds and 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_000034938
Laboratory report detailing GCMS scan results for sample AD28651, noting low pH and recovery rates.
Similar document embedding; no shared entity or topic indexed. · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035505
Gas chromatography-mass spectrometry analysis results for sample AD28859 showing bis(2-Ethylhexyl)phthalate presence at 0.81 ug/L with quality control notes on LCS standard recover
1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035580
GCMS scan results for sample AD28903 dated December 15, 2001, detecting bis(2-Ethylhexyl)phthalate.
1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035589
Lab report noting bis(2-Ethylhexyl)phthalate detection and recovery issues in a water sample.
1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035990
Laboratory report noting detection of bis(2-Ethylhexyl)phthalate in sample AD29028 analyzed on December 18, 2001.
Similar document embedding; no shared entity or topic indexed. · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035909
Lab notes for sample AD29024 indicate detection of bis(2-Ethylhexyl)phthalate and no unusual compounds.
Similar document embedding; no shared entity or topic indexed. · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035843
Lab notes for sample AD29190 indicate detection of di-n-butylphthalate and one LCS compound outside acceptance range.
1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034227
Laboratory commentary noting high recovery rates and absence of unusual compounds in sample AD28275.
1 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000036371
Laboratory GCMS analysis report for sample AD29290 conducted on January 4, 2002, showing unknown compounds.
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.
NYC-WTC_000033874
Laboratory report detailing GCMS scan results and recovery rates for environmental sample AD28147 analyzed in December 2001.
Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000036360
Laboratory GCMS analysis report for sample AD29289 conducted on January 4, 2002, showing unknown compounds and surrogates.
Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000033865
Gas chromatography-mass spectrometry analysis of sample AD28141 showing no unusual compounds detected; method acceptance ranges to be established and used.
Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035745
Laboratory notes indicating re-extraction is required due to low recovery and potential contamination.
Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000034938
Laboratory report detailing GCMS scan results for sample AD28651, noting low pH and recovery rates.
Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035909
Lab notes for sample AD29024 indicate detection of bis(2-Ethylhexyl)phthalate and no unusual compounds.
Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗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