Laboratory note regarding trace detection of 1,2-Dichlorobenzene-d4 in multiple samples attributed to laboratory contamination.
NYC-WTC_000068225–000068229Folder label: “508 GCMS Scan X 10/11/01 An 11/2/01”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Comments for Sample AD24335 - Analysis $GCMS Westchester Dept, of Labs & Research User; Vinci, David L Date; 11-08-2001 Time; 16;14;52
A scan of the extract prepared for the 508 analysis, from 35-550 amu usino a mass spectrometer, does not reveal the presence of non-target compounds. However, an amount of 1,2-Dichlorobenzene-d4, less than 0.5 ug/L, is present in the following samples in this batch, probably due to laboratory contamination since it is used as a Surrogate Standard in GCMS methods; AD24335,24396, 24397,24398,24399, 24400, 24401, 24429, 24430,24334, and 24395.
U.T7
NYC-WTC_000068225
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NYC-WTC_000069571
Record of laboratory extraction parameters including drip rates and solvent details for samples processed in November 2001.
1 shared topics · Same agency, volume and box · similarity 0.989
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Header page from a GCMS scan batch dated October 4, 2001, associated with DEP laboratory operations.
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Log sheet recording liquid-liquid extraction parameters and sample processing details for November 2001.
1 shared topics · Same agency, volume and box · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000067975
Laboratory report documenting GCMS analysis of sample AD24215 conducted on November 6, 2001, noting unknown compounds.
1 shared topics · Same agency, volume and box · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000068812
Document page containing identification codes for GCMS scans conducted in November 2001 within DEP Box 60.
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Fragmented page from a GCMS scan document dated November 24, 2001, containing minimal readable text.
1 shared topics · Same agency, volume and box · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000069729
Log sheet recording liquid-liquid extraction parameters and sample processing details for October and November 2001.
1 shared topics · Same agency, volume and box · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000068556
Log sheet recording liquid-liquid extraction parameters and sample processing details for November 2001.
1 shared topics · Same agency, volume and box · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000069151
Fragmented laboratory data record from a GCMS scan performed in November 2001 regarding environmental samples.
1 shared topics · Same agency, volume and box · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000068397
Multi-page laboratory log table recording sample extraction details including volumes and drip rates for GCMS analysis in November 2001.
1 shared topics · Same agency, volume and box · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000086892
Technical form recording liquid-liquid extraction parameters including drip rates and pH measurements for WTC samples.
1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000005744
Fragmented page from a Department of Environmental Protection GCMS file containing sample identification data from February 2002.
1 shared topics · similarity 0.988
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Record of a GCMS scan conducted at the World Trade Center site in early November 2001.
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Laboratory report documenting GCMS analysis of environmental sample AD24334 with detection of unknown compounds.
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Laboratory report documenting GCMS analysis of environmental sample AD24335 with detection of unknown compounds.
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Laboratory report documenting GCMS analysis of environmental sample AD24395 with detection of unknown compounds.
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