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Page and document embeddings group records by subject. Region area represents pages; boxes and dates trace how a topic spreads across the collection. This is a map of subjects, never of people.
Machine-clustered topics and assignments, not a definitive index. Select a topic to zoom into its sub-topics, then a sub-topic to see its documents.
← Whole collection · Gas chromatography-mass spectrometry analysis of WTC environmental samples
84636 pages · 7113 documents — open this topic's documents →
Gas chromatography-mass spectrometry analysis of World Trade Center samples15210 pages · 1038 documentsLaboratory analytical testing results identifying organic compounds and chemical residues from post-9/11 environmental samples. · Boxes DEP Box 28, DEP Box 18, DEP Box 14, DEP Box 23 · Click to open documentsGCMS chemical analysis reports for organic compounds14547 pages · 997 documentsGas chromatography-mass spectrometry test results identifying nitrophenols, chlorophenols, benzidine, and other organic substances in environmental samples. · Boxes DEP Box 60, DEP Box 21, DEP Box 22, DEP Box 67 · Click to open documentsICP-MS heavy metals and trace elements analysis tuning and daily performance checks12695 pages · 516 documentsInductively coupled plasma mass spectrometry instrument calibration, optimization, and quality control testing for lead, arsenic, selenium, and mercury analysis, April–May 2002. · Boxes DEP Box 59, DEP Box 66, DEP Box 24, DEP Box 58 · Click to open documentsGas chromatography-mass spectrometry analysis reports11772 pages · 1378 documentsGCMS laboratory analysis results for environmental samples collected from World Trade Center site, January–May 2002. · Boxes DEP Box 57, DEP Box 25, DEP Box 14, DEP Box 16 · Click to open documentsVolatile organic compounds testing and analysis10615 pages · 327 documentsLaboratory analysis records for VOC sampling at lower Manhattan sites following 9/11, including test results and chemical compound identification. · Boxes DEP Box 04, DEP Box 17, DEP Box 65, DEP Box 02 · Click to open documentsLiquid-liquid extraction testing and PCB analysis records9197 pages · 800 documentsLaboratory analysis records documenting chemical extraction procedures and pesticide/PCB compound testing following 9/11. · Boxes DEP Box 68, DEP Box 64, DEP Box 30, DEP Box 13 · Click to open documentsHexachlorocyclopentadiene and organic compound analysis (October–December 2001)5851 pages · 854 documentsLaboratory analysis reports for persistent organic pollutants and chemical residues, October through December 2001. · Boxes DEP Box 20, DEP Box 58, DEP Box 30 · Click to open documentsNitrosamine and organic compound analysis by gas chromatography-mass spectrometry2011 pages · 403 documentsGCMS laboratory analysis results for nitrosamines and synthetic organic compounds in environmental samples, November 2001–May 2002. · Boxes DEP Box 30, DEP Box 28, DEP Box 23, DEP Box 27 · Click to open documentsPCB and pesticide residue testing and analysis1185 pages · 289 documentsLaboratory analysis reports for polychlorinated biphenyls and pesticide compounds from environmental samples collected in fall 2001. · Boxes DEP Box 68, DEP Box 30, DEP Box 64, DEP Box 13 · Click to open documentsGas chromatography-mass spectrometry extraction and calibration records1072 pages · 389 documentsLaboratory analytical testing records documenting GC/MS procedures, liquid-liquid extraction protocols, and calibration standards from post-9/11 environmental sampling. · Boxes DEP Box 25, DEP Box 28, DEP Box 57, DEP Box 22 · Click to open documentsPCB and asbestos extraction testing and analysis481 pages · 122 documentsLaboratory analysis records and drip-rate testing data for polychlorant and asbestos material extraction samples, fall-winter 2001. · Boxes DEP Box 58, DEP Box 20, DEP Box 30, DEP Box 68 · Click to open documents
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