Lead Detection Wipes for Potentially Contaminated Surfaces


This CDC-developed invention relates to a method for the detection of lead on surfaces (such as, for example, skin, floors, walls, windows sills) using a ‘handwipe’ system and a chemical test effecting a characteristic color change if contaminating lead is present. This invention is especially useful in detecting the presence of lead on skin and assessing the effectiveness of hand washing in removal of lead from the skin of exposed individuals. Further, this invention is useful in field evaluation for the presence of lead, exposure of individuals to lead, and the effectiveness of its subsequent removal in the workplace, home, school, and similar environments.

Potential Commercial Applications: Competitive Advantages:
  • Suitable for lead-testing surfaces such as floors, walls, windowsills and human skin
  • Evaluation of lead-removal effectiveness from surfaces in homes, hospitals, workplaces and schools
  • Confirming hand/skin/shoe/clothing-washing effectiveness of lead removal for military, target range personnel
 
  • Simple color-change readout indicates the presence of lead on a surface
  • Rapid test; lead concentration can be inferred by degree of color shift
  • Safe for use on skin


Development Stage:
  • In vitro data available
  • In situ data available (on-site)


Related Invention(s):
E-356-2013/0
E-359-2013/0


Inventors:

Eric Esswein (CDC)  ➽ more inventions...

Mark Boeniger (CDC)  ➽ more inventions...

Kevin Ashley (CDC)  ➽ more inventions...


Intellectual Property:
U.S. Pat: 6,248,593 issued 2001-06-19
US Application No. 60/049,352
US Application No. 09/458,152

Publications:
Ashley K. doi 10.1016/j.jchas.2009.07.002
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition. Method 9105, Issue 1 - Lead in Dust Wipes by Chemical Spot Test Method (Colorimetric Screening Method), 15 March 2003. U.S. National Institute for Occupational Safety and Health (NIOSH), Cincinnati, OH. NMAM - Method 9105
Esswein EJ, et al. doi 10.1520/JAI103527

Licensing Contact:
Karen Surabian, J.D., M.B.A.
Email: karen.surabian@nih.gov
Phone: 301-594-9719

OTT Reference No: E-336-2013/0
Updated: Mar 7, 2014