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 of pollution in road dust. This study evaluated the use of road dust color as a proxy methodology to identify samples contaminated with presumably contaminating elements. FRX determined the concentrations...

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Main Authors:	Yameli Aguilar, Francisco Bautista, Patricia Quintana, Daniel Aguilar, Rudy Trejo-Tzab, Avto Goguitchaichvili, Roberto Chan-Te
Format:	Article
Language:	English
Published:	MDPI AG 2021-04-01
Series:	Atmosphere
Subjects:	color indices redness hue saturation lead pollution
Online Access:	https://www.mdpi.com/2073-4433/12/4/483

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spelling	doaj-8acc792e1d6a4b0b9bde95c279ea66d42021-04-11T23:01:52ZengMDPI AGAtmosphere2073-44332021-04-011248348310.3390/atmos12040483Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, MéxicoYameli Aguilar0Francisco Bautista1Patricia Quintana2Daniel Aguilar3Rudy Trejo-Tzab4Avto Goguitchaichvili5Roberto Chan-Te6Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Yucatan 91700, MexicoLaboratorio Universitario de Geofísica Ambiental, Centro de Investigaciones en Geografía Ambiental e Instituto de Geofísica, Universidad Nacional Autónoma de México, Michoacán 58190, MexicoCentro de Investigación y de Estudios Avanzados Unidad Mérida Yucatán, Merida 97310, MexicoCentro de Investigación y de Estudios Avanzados Unidad Mérida Yucatán, Merida 97310, MexicoFacultad de Ingeniería Química, Universidad Autónoma de Yucatán, Mérida 97000, MexicoLaboratorio Universitario de Geofísica Ambiental, Centro de Investigaciones en Geografía Ambiental e Instituto de Geofísica, Universidad Nacional Autónoma de México, Michoacán 58190, MexicoLaboratorio Universitario de Geofísica Ambiental, Centro de Investigaciones en Geografía Ambiental e Instituto de Geofísica, Universidad Nacional Autónoma de México, Michoacán 58190, MexicoThe design of proxy techniques is an innovative tool to monitor the potentially toxic elements of pollution in road dust. This study evaluated the use of road dust color as a proxy methodology to identify samples contaminated with presumably contaminating elements. FRX determined the concentrations of Fe, Ti, Rb, Sr, Y, Cu, Zn, and Pb in eighty-five road dust samples. The appliance of the RGB system and the Munsell color cards identified five color groups of road dust samples. The discriminant analysis validated these groups by colorimetric indices and presumably contaminating elements. The “very dark gray” color of road dust contains the highest concentrations of Pb, Cu, Zn, and Y. The redness and saturation rates showed high correlations with presumably contaminating elements in “dark gray” and “very dark gray” color samples. The color of road dust, as a proxy technique, allows identifying samples contaminated with presumably contaminating elements.https://www.mdpi.com/2073-4433/12/4/483color indicesrednesshuesaturationleadpollution
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yameli Aguilar Francisco Bautista Patricia Quintana Daniel Aguilar Rudy Trejo-Tzab Avto Goguitchaichvili Roberto Chan-Te
spellingShingle	Yameli Aguilar Francisco Bautista Patricia Quintana Daniel Aguilar Rudy Trejo-Tzab Avto Goguitchaichvili Roberto Chan-Te Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México Atmosphere color indices redness hue saturation lead pollution
author_facet	Yameli Aguilar Francisco Bautista Patricia Quintana Daniel Aguilar Rudy Trejo-Tzab Avto Goguitchaichvili Roberto Chan-Te
author_sort	Yameli Aguilar
title	Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México
title_short	Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México
title_full	Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México
title_fullStr	Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México
title_full_unstemmed	Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México
title_sort	color as a new proxy technique for the identification of road dust samples contaminated with potentially toxic elements: the case of mérida, yucatán, méxico
publisher	MDPI AG
series	Atmosphere
issn	2073-4433
publishDate	2021-04-01
description	The design of proxy techniques is an innovative tool to monitor the potentially toxic elements of pollution in road dust. This study evaluated the use of road dust color as a proxy methodology to identify samples contaminated with presumably contaminating elements. FRX determined the concentrations of Fe, Ti, Rb, Sr, Y, Cu, Zn, and Pb in eighty-five road dust samples. The appliance of the RGB system and the Munsell color cards identified five color groups of road dust samples. The discriminant analysis validated these groups by colorimetric indices and presumably contaminating elements. The “very dark gray” color of road dust contains the highest concentrations of Pb, Cu, Zn, and Y. The redness and saturation rates showed high correlations with presumably contaminating elements in “dark gray” and “very dark gray” color samples. The color of road dust, as a proxy technique, allows identifying samples contaminated with presumably contaminating elements.
topic	color indices redness hue saturation lead pollution
url	https://www.mdpi.com/2073-4433/12/4/483
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Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México

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