NICKEL SPECIATION OF URBAN PARTICULATE MATTER

Technical Report · Wed Oct 01 04:00:00 EDT 2003

DOI:https://doi.org/10.2172/823014· OSTI ID:823014

Galbreath, Kevin C; Crocker, Charlene R; Nyberg, Carolyn M; Huggins, Frank E; Huffman, Gerald P

A four-step sequential Ni extraction method, summarized in Table AB-1, was evaluated for identifying and quantifying the Ni species occurring in urban total suspended particulate (TSP) matter and fine particulate matter (<10 {micro}m [PM{sub 10}] and <2.5 {micro}m [PM{sub 2.5}] in aerodynamic diameter). The extraction method was originally developed for quantifying soluble, sulfidic, elemental, and oxidic forms of Ni that may occur in industrial atmospheres. X-ray diffraction (XRD) and x-ray absorption fine structure (XAFS) spectroscopy were used to evaluate the Ni species selectivity of the extraction method. Uncertainties in the chemical speciation of Ni in urban PM{sub 10} and PM{sub 2.5} greatly affect inhalation health risk estimates, primarily because of the large variability in acute, chronic, and cancer-causing effects for different Ni compounds.

• Research Organization: University of North Dakota (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FC26-98FT40321
• OSTI ID: 823014
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
AIR POLLUTION
EXTRACTION
NICKEL COMPOUNDS
PARTICULATES
SAMPLE PREPARATION
URBAN AREAS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY