Standard Operating Procedure for Field Analysis of Lead in Paint, Bulk Dust, andSoil by Ultrasonic, Acid Digestion and Colorimetric Measurement

摘要

The adverse health effects resulting from exposure of young children toenvironmental lead has received increasing attention in recent years. The major sources of exposure to lead in housing units are thought to be paint, dust and soil. Under Section 302 of the Lead-Based Paint Poisoning Prevention Act, as amended, Public Housing Authorities (PHAs) are required, by 1994, to randomly inspect all of their housing projects for lead-based paint. The most common approach currently used to test for lead in housing is portable X-ray fluorescence (XRF). A possible alternative or complement to the XRF is a chemical test kit. The current lack of quantitative commercial kits for lead in solids has resulted in the development of a 'hybrid' field test method that incorporates a simple extraction system followed by measurement using a commercially available test kit (Hach LeadTrak) capable of quantifying lead concentrations in water samples at low parts-per-billion concentrations. The standard operating procedure contained within this document describes this field test method for determination of lead in paint, bulk dust, and soil.