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NHEXAS PHASE I REGION 5 STUDY--STANDARD OPERATING PROCEDURE--DUST SAMPLING WORKPLAN (RTI/ACS-AP-209-020)
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Citation:
Region 5 Study Consortium. NHEXAS PHASE I REGION 5 STUDY--STANDARD OPERATING PROCEDURE--DUST SAMPLING WORKPLAN (RTI/ACS-AP-209-020). U.S. Environmental Protection Agency, Washington, D.C., 1995.
Description:
This procedure describes the work plan for collecting house dust samples. Wipe samples were collected to determine the concentrations (ug/g) and loadings (ug/cm2) of trace metals in house dust. The selection of the surfaces from which dust was collected was based upon the availability of the surface for contact by an adult or child. Two wipe samples were collected from each of two locations for a total of four samples during the visit planned for each residence. Two samples were collected for Pb and other heavy metal analysis, and two were collected specifically for As analysis. Dust samples were collected from the homes on three different occasions. The first suite of samples was collected during the home visit by a member of the RTI study team. In addition to the wipe samples, a clean surface was placed in a remote area of the selected homes where dust would settle on it for at least four weeks. The surface was mailed to EOHSI where the dust was removed from the surface for analysis. A second surface was put in place and the process was repeated. A small doormat was placed on the floor within selected homes to collect dust and dirt. After a specified period of time, the doormat was mailed to EOHSI where the dust was removed from the doormat for analysis. The primary target analytes were lead and arsenic. The procedure also covers shipping, storing, cleaning, and QA/QC. Keywords: house dust; metals.
The National Human Exposure Assessment Survey (NHEXAS) is a federal interagency research effort coordinated by the Environmental Protection Agency (EPA), Office of Research and Development (ORD). Phase I consists of demonstration/scoping studies using probability-based sampling designs. The Region 5 study was conducted in EPA's Region 5 (Ohio, Michigan, Illinois, Indiana, Wisconsin, and Minnesota), and included personal exposure, residential concentration, and biomarker measurements of metals and VOCs. The study was conducted by the Research Triangle Institute (RTI) and the Environmental and Occupational Health Sciences Institute (EOHSI). The scope and design of the study are detailed in the following article: E. Pellizzari et al., Population-Based Exposure Measurements in EPA Region 5: A Phase I Field Study in Support of the National Human Exposure Assessment Survey. Journal of Exposure Analysis and Environmental Epidemiology, Vol. 5, No. 3, 1995, pp. 327-358.
NOTE: The U.S. Environmental Protection Agency (EPA), through its Office of Research and Development (ORD), partially funded and collaborated in the research described here. Mention of trade names or commercial products does not constitute endorsement or recommendation by EPA for use. This SOP is part of the Quality Systems Implementation Plan (QSIP) that was reviewed by the EPA and approved for use in this demonstration/scoping study. This SOP was used in the study and is provided for documentation purposes. It does not reflect EPA methods and should not be construed as such. The methods were generated by the consortium to be used for the NHEXAS pilot study.