An X-ray fluorescence method for measuring the quantity of test matter removed from carpet by vacuuming and wet extraction in typical carpet cleaning processes is described. In this cleaning effectiveness analytical method, five different test compounds were incorporated into an artificial soil, which was then applied to a test carpet. X-ray fluorescence was used to quantify these elements after initial addition to the carpet and subsequent to each step of a predetermined cleaning process. Evaluations were conducted with various cleaning process variants including vacuumed and un-vacuumed. X-ray fluorescence identified relative differences in the removal efficacies of the five target compounds from carpet which were associated with the test cleaning processes. This approach appears feasible as a means of assessing the performance of carpet cleaning technologies.
Published in AATCC Review March/April 2011 – www.aatcc.org