Arid
DOI10.1016/j.scitotenv.2018.02.285
Source apportionment and environmental fate of lead chromates in atmospheric dust in arid environments
Meza-Figueroa, Diana1,6; Gonzalez-Grijalva, Belem2; Romero, Francisco3,6; Ruiz, Joaquin4; Pedroza-Montero, Martin5; Ibanez-Del Rivero, Carlos6; Acosta-Elias, Monica5; Ochoa-Landin, Lucas1,7; Navarro-Espinoza, Sofia6
通讯作者Meza-Figueroa, Diana
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2018
卷号630页码:1596-1607
英文摘要

The environmental fate of lead derived from traffic paint has been poorly studied in developing countries, mainly in arid zones. For this purpose, a developing city located in the Sonoran desert (Hermosillo, Mexico), was chosen to conduct a study. In this paper the lead chromate (crocoite) sources in atmospheric dust were addressed using a combination of Raman microspectroscopy, X-ray diffraction, scanning electron microscopy (SEM), and Pb isotope measurements. A high concentration of Pb and Cr as micro-and nanostructured pigments of crocoite is reported in yellow traffic paint (n= 80), road dust (n= 146), settled dust in roofs (n= 21), and atmospheric dust (n= 20) from a developing city located in the Sonoran Desert. 10 samples of peri-urban soils were collected for local geochemical background. The paint photodegradation and erosion of the asphaltic cover are enhanced by the climate, and the presence of the mineral crocoite (PbCrO4) in road dust with an aerodynamic diameter ranging from 100 nm to 2 mu m suggests its integration into the atmosphere by wind resuspension processes. A positive Pb-Cr correlation (R-2 = 0.977) was found for all studied samples, suggesting a common source. The Pb-isotope data show signatures in atmospheric dust as a product of the mixing of two end members: i) local soils and ii) crocoite crystals as pigments in paint. The presence of lead chromates in atmospheric dust has not been previously documented in Latin America, and it represents an unknown health risk to the exposed population because the identified size of crystals can reach the deepest part of lungs. (C) 2018 Elsevier B.V. All rights reserved.


英文关键词Lead chromates Atmospheric dust Road dust Yellow traffic paint Roofs Lead isotopes
类型Article
语种英语
国家Mexico ; USA
收录类别SCI-E
WOS记录号WOS:000432467700156
WOS关键词URBAN ROAD DUSTS ; HEXAVALENT CHROMIUM ; PARTICULATE MATTER ; HUMAN EXPOSURE ; TOXIC METALS ; SYRACUSE ; PIGMENTS ; HEALTH ; TRENDS ; CITIES
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构University of Arizona ; Universidad Nacional Autónoma de México
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212954
作者单位1.Univ Sonora, Dept Geol, Hermosillo 83000, Sonora, Mexico;
2.Univ Nacl Autonoma Mexico, Inst Geol, Earth Sci Grad Program, Hermosillo 83240, Sonora, Mexico;
3.Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Mexico City 04510, DF, Mexico;
4.Univ Arizona, Dept Geosci, 1040 E 4thSt,Gould Simpson Bldg 77, Tucson, AZ 85721 USA;
5.Univ Sonora, Dept Phys Res, Hermosillo 83000, Sonora, Mexico;
6.Dept Geol, Grad Program, Hermosillo 83000, Sonora, Mexico;
7.Lab Nacl Geoquim & Mineral LANGEM, Mexico City, DF, Mexico
推荐引用方式
GB/T 7714
Meza-Figueroa, Diana,Gonzalez-Grijalva, Belem,Romero, Francisco,et al. Source apportionment and environmental fate of lead chromates in atmospheric dust in arid environments[J]. University of Arizona, Universidad Nacional Autónoma de México,2018,630:1596-1607.
APA Meza-Figueroa, Diana.,Gonzalez-Grijalva, Belem.,Romero, Francisco.,Ruiz, Joaquin.,Pedroza-Montero, Martin.,...&Navarro-Espinoza, Sofia.(2018).Source apportionment and environmental fate of lead chromates in atmospheric dust in arid environments.SCIENCE OF THE TOTAL ENVIRONMENT,630,1596-1607.
MLA Meza-Figueroa, Diana,et al."Source apportionment and environmental fate of lead chromates in atmospheric dust in arid environments".SCIENCE OF THE TOTAL ENVIRONMENT 630(2018):1596-1607.
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