IN A RESIDENTIAL ENVIRONMENT: PART II
Gas Chromatography/Mass Spectrometry Analysis of
Residential Indoor Air For Polynuclear Aromatic Hydrocarbon
Due to Creosote Contamination
(EPA Method TO-13A; Compendium of Methods for Determination of Toxic Organic Compounds in Ambient Air, 2nd Edition)
(35 Pages of Text + 26 Exhibits)
The analytical results for polynuclear aromatic hydrocarbon in wood samples at a single family residence in Los Angeles, California (Creosote Contamination in a Residential Environment, Part I) raised concerns about potential toxicity to human residents through an inhalation route of exposure to semivolatile polynuclear aromatic hydrocarbon. Since polynuclear aromatic hydrocarbons are reasonably anticipated to be human carcinogens (National Toxicology Program, Report on Carcinogens, 11th Edition), it was deemed necessary to collect indoor air samples from the residence to determine risk of exposure to humans via inhalation of polynuclear aromatic hydrocarbon.
The Office of Environmental Health Hazard Assessment of the California Environmental Protection Agency promulgates a stringent target Residential Indoor Air Concentration for certain polynuclear aromatic hydrocarbons. Indoor air concentrations of these polynuclear aromatic hydrocarbons in excess of target Residential Indoor Air Concentrations may pose significant carcinogenic risk to human residents exposed via the inhalation route to polynuclear aromatic hydrocarbon. In addition, a reference dose for cancer as aresult of chronic exposure to polynuclear aromatic hydrocarbon via the inhalation route is estimated by the California EPA.
This treatise reports the concentrations of polynuclear aromatic hydrocarbon measured in indoor residential air at a single family residence where creosote contamination was discovered. A Risk Assessment is performed to determine the actual exposure of human residents to polynuclear aromatic hydrocarbon, based on their residential indoor air concentrations determined by gas chromatography/mass spectrometry.
I. Summary of Findings
A. Analytical Results
II. Analytical Methods
A. EPA Method 3540C/TO-13A
B. Method Protcol EPA Method TO-13A
III. Analytical Results
A. PUF/XAD Sorbent Cartridge Extract
B. Quantitation of Amounts of Target Analytes in PUF/XAD Extract
C. Mass Spectral Confirmation of PAH's in PUF/XAD Extract
D. Quality Control Testing
IV. Determination of Phenols and Cresols in Ambient Air by HPLC
A. EPA Method TO-08
B. Method Protocol: EPA Method TO-08
C. Analytical Results