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Issue 5, 2012
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Development and preparation of lead-containing paint films and diagnostic test materials

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Abstract

Lead in paint continues to be a threat to children's health in cities across the United States, which means there is an ongoing need for testing and analysis of paint. This ongoing analytical effort and especially development of new methods continue to drive the need for diagnostic testing materials that provide the analytical challenges of real-world paints. To this end, 31 different types of paint test materials were developed and prepared. Preparation of the materials included development of lead-containing paint films yielding an overall relative standard error for one individual test sample being less than 10%. The 31 diagnostic test materials prepared with these paint films included two lead pigments; lead concentrations from nominally 0 to 2.0 mg lead/cm2 (0 to 5% lead by weight); overlayers of both “lead-free,” oil-based and water-based paints; Al, Ba, and Mg as potential chemical interferents; red and black potential color interferents; and substrates of wood, metal, masonry, and plaster. These materials challenge each step in method development and evaluation, including paint sample collection and preparation, lead extraction, and measurement of solubilized lead. When the materials were used to test performance of a new lead-in-paint testing method based on extraction using a rotor/stator method and measurement using turbidimetry, the results agreed to within ±20% of the expected lead values for 30 out of 31 of the diagnostic test materials, thereby demonstrating their levels of quality and utility.

Graphical abstract: Development and preparation of lead-containing paint films and diagnostic test materials

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Publication details

The article was received on 15 Dec 2011, accepted on 06 Mar 2012 and first published on 30 Mar 2012


Article type: Paper
DOI: 10.1039/C2EM11004K
Citation: J. Environ. Monit., 2012,14, 1417-1427
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    Development and preparation of lead-containing paint films and diagnostic test materials

    D. Binstock, W. Gutknecht, K. Sorrell, C. Haas, W. Winstead, M. McCombs, G. Brown, C. Salmons and S. L. Harper, J. Environ. Monit., 2012, 14, 1417
    DOI: 10.1039/C2EM11004K

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