- Modality
- NIR
- Category
- man-made
- Material Type
- Fireproof coating from steel girder
- Sample ID
- WTC01-8
- Collection Locality
- Debris pile west of World Trade Center Tower 1
- Spectral Purity
- 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
- Composition / XRD
- None # XRF, EPMA, ICP(Trace), WChem
- Sample Description
- Fireproof coating from steel girder Sample WTC01-8 was taken from a coating on a steel girder removed from the debris pile west of WTC tower 1. This sample was collected Sept. 18, 2001. The coating was very distinct having a different color and texture than the surrounding dust. A location map and details of the sample collection process are given in Roger N. Clark and others, Environmental Studies of the World Trade Center area after the September 11, 2001 attack, U.S. Geological Survey Open File Report OFR-01-0429. This report is available at http://pubs.usgs.gov/of/2001/ofr-01-0429/
- XRD Analysis
- calcite (minor), chrysotile (minor), gypsum (minor), talc (trace), anhydrite (trace), microcline (trace), rozenite (trace) In general minor = 5 - 20 wt%, trace > 5 wt% See: Roger N. Clark and others, Environmental Studies of the World Trade Center area after the September 11, 2001 attack, U.S. Geological Survey Open File Report OFR-01-0429. This report is available at http://pubs.usgs.gov/of/2001/ofr-01-0429/ See also: Swayze, G.A., R.N. Clark, S.J. Sutley, T.M. Hoefen, G.S. Plumlee, G.P. Meeker, I.K. Brownfield, K.E. Livo, and L.C. Morath, 2006, Chapter 3: Spectroscopic and x-ray diffraction analyses of asbestos in the World Trade Center dust: in Urban Aerosols and Their Impacts: Lessons Learned from the World Trade Center Tragedy, J.S. Gaffney and N.A. Marley (eds.), American Chemical Society Symposium Series 919, p. 40-65.
- X Units
- cm⁻¹
- Y Units
- Absorbance
- Data Points
- 2,126