GCMS report for sample AD28861 showing detection of unknown compounds and surrogate recovery data.
NYC-WTC_000018849–000018857Folder label: “GCMS X 12/17/01 A 12/22 - 12/23/01”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
. Comments for Sample AD28861 - Analysis $GCMS
Westchester Dept, of Labs & Research User Vinci, David L Date: 02-08-2002 Time: 13:10:55
The GCMS scan, from 35 to 550 amu, does not reveal the presence of unusual compounds. Present in this sample is Decanedioic acid bis(2-Ethylhexyl) ester at an estimated level of 13 ug/L, and with a fit of 87 out of 100; however its presence is probably due to laboratory contamination since it was also present in the Laboratory Blank. The recovery for the Surrogate Standard in this sample was below its acceptance range. This sample will be re-extracted and re-analyzed. This sample was reanalyzed with a Surrogate Standard recovery of 98%. The sample is clean, showing no Decanedioic acid bis(2-Ethylhexyl) ester, which is due to contamination from GCMS pump oil. Also, the pH for this sample when received was below 2.
NYC-WTC_000018850
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NYC-WTC_000018913
GCMS analysis report for sample AD26830 showing detection of unknown compounds and surrogate recovery data from December 11, 2001.
1 shared topics · Same agency, volume and box · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000018923
GCMS analysis report for sample AD26477 showing detection of unknown compounds and surrogate recovery data from December 21, 2001.
Same agency, volume and box · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000018858
GCMS analysis report for sample AD30606 showing detection of unknown compounds and surrogate recovery data from February 8, 2002.
Same agency, volume and box · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000018870
GCMS analysis report for sample AD30485 showing detection of unknown compounds and surrogate recovery data from February 8, 2002.
Same agency, volume and box · similarity 0.993
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000016251
GCMS analysis report for sample AD31365 showing surrogate recovery and unknown compounds from February 7, 2002.
1 shared topics · Same agency, volume and box · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000016213
Laboratory report documenting gas chromatography-mass spectrometry analysis of environmental sample AD31380 conducted on February 7, 2002.
1 shared topics · Same agency, volume and box · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000016204
Gas chromatography-mass spectrometry analysis of environmental sample AD31379 completed on 02/07/2002, showing 2,4-DDD surrogate recovery at 115%.
1 shared topics · Same agency, volume and box · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000016169
GCMS analysis report for sample AD31376 showing surrogate recovery and unknown compounds from February 7, 2002.
1 shared topics · Same agency, volume and box · similarity 0.992
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GCMS analysis report for sample AD29565 listing unknown compounds and surrogate recovery data from January 22, 2002.
Similar document embedding; no shared entity or topic indexed. · similarity 0.995
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 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000036020
Laboratory report stating GCMS scan of sample AD29086 revealed no unusual compounds.
1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035683
Laboratory notes stating the GCMS scan of sample AD28898 revealed no unusual compounds.
1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000035745
Laboratory notes indicating re-extraction is required due to low recovery and potential contamination.
Similarity score 0.994 (not a probability)
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Laboratory report noting detection of Decanedioic acid bis(2-Ethylhexyl) ester in sample AD29027 on December 18, 2001.
Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035755
Lab report noting bis(2-Ethylhexyl) Sebacate detection and potential laboratory contamination in a water sample.
Similarity score 0.986 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000035717
Laboratory notes identifying potential laboratory contamination by specific esters in sample AD28899.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000037104
Laboratory report of GCMS analysis for sample AD26320 conducted on December 4, 2001.
Similarity score 0.975 (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 0.969 (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_000018795
Single-page document containing GCMS data or metadata associated with the WTC site in late December 2001.
Filed in the same folder
NYC-WTC_000018796
Fragmented GCMS data page containing chemical identifiers and numerical values from a December 2001 analysis.
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NYC-WTC_000018799
Calibration report listing response factors and concentrations for multiple organic compounds analyzed on December 22, 2001.
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NYC-WTC_000018803
Reference data report showing measured versus expected values for organic compounds in sample AD29735.
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NYC-WTC_000018808
Blank analysis report confirming no detectable levels of target compounds above the method detection limit.
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