Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México

The design of proxy techniques is an innovative tool to monitor the potentially toxic elements pollution in road dust. This study evaluated use dust color as a methodology identify samples contaminated with presumably contaminating elements. FRX determined concentrations Fe, Ti, Rb, Sr, Y, Cu, Zn, and Pb eighty-five samples. appliance RGB system Munsell cards identified five groups discriminant analysis validated these by colorimetric indices “very dark gray” contains highest Pb, Y. redness saturation rates showed high correlations “dark dust, technique, allows identifying