The physical factors affecting heavy metals accumulated in the sediment deposited on road surfaces in dry weather: a review

Zafra, Carlos; Temprano, Javier; Monzón, Iñaki Tejero

doi:10.1080/1573062x.2016.1223320

Cited by 39 publications

(19 citation statements)

References 92 publications

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“…All the road dust samples were collected within a distance of approximately 10 m along the roadside; the weight of each sample was > 100 g (Men et al 2018b). Since the length of the previous dry period has an impact on the particle size composition and concentration of sediment particles (Li et al 2015;Zafra et al 2017), all the analytical samples were gathered after at least 3 dry days. Plastic brushes and dustpans were employed for collection, and the samples were placed in self-sealing polyethylene bags with a clean hairbrush, labeled, and then transferred to a laboratory as soon as possible.…”

Section: Sample Collectionmentioning

confidence: 99%

Spatial distribution of pollution characteristics and human health risk assessment of exposure to heavy elements in road dust from different functional areas of Zhengzhou, China

Wang

Shen

Kang

et al. 2020

Environ Sci Pollut Res

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Road dust from different sources directly contacts the human body and has potential effects on public health. In this study, a total number of 87 road dust samples were collected at 29 sampling sites from five different functional areas (commercial area (CA), residential area (RA), educational area (EA), industrial area (IA), and park area (PA)) in Zhengzhou to study the contamination status, distribution, source identification, ecological risk assessment, and spatial distribution of human health risks due to eight heavy elements. The geo-accumulation index (I geo) and pollution index (PI) revealed that there was very high contamination with Cd and Hg caused by atmospheric deposition, which should be paid special attention. Additionally, the source identification indicated that Cr, Ni, Cu, Zn, Cd, and Pb originate from anthropogenic activities related to traffic, and Hg can originate from medical equipment and agricultural chemicals, while the extremely low level of pollution with As could be explained by geographic sources. Moreover, the calculated ecological risk index values were increased in the order of CA > RA > EA > IA > PA in different functional areas. According to the human health risks of the whole city, children exposed to Pb have the highest health risk, especially for CA and IA, as calculated by the noncarcinogenic hazard index (HI). For adults and children, health risks caused by Cu, Zn, and Pb were higher in the CA, RA, and PA of the downtown area, whereas Cr and Ni had the highest noncarcinogenic exposure risk in northwestern Zhengzhou due to point source pollution. Calculations of the carcinogenic risk (CR) values for Cr, Ni, As, and Cd indicate that the value of Cr is highest (1.17 × 10 −7), especially inside the industrial area (8.55 × 10 −7), which is close to the lower limit of the threshold values (10 −6 to 10 −4). These results can provide a theoretical basis and data support for air treatment, pollution control, and the implementation of public prevention in different functional areas of Zhengzhou.

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Section: Sample Collectionmentioning

confidence: 99%

Spatial distribution of pollution characteristics and human health risk assessment of exposure to heavy elements in road dust from different functional areas of Zhengzhou, China

Wang

Shen

Kang

et al. 2020

Environ Sci Pollut Res

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“…(19) The analysis of heavy metal concentration in the road sediment was performed for the size fraction <250μm because research has reported that this fraction is dominant in weight and has the tendency to record the highest concentrations of heavy metals in road sediments. (14,20,21) Heavy metal concentration in the road sediment was determined by flame atomic absorption spectrometry (ISO-11047 method). (19) The sediment samples were previously digested in a mixture of hydrochloric acid and nitric acid (3:1, aqua regia), method ISO-11466.…”

Section: Heavy Metal Concentrationmentioning

confidence: 99%

“…(7,10,11) Chen et al (3) and McKenzie & Irwin (12) reported that the deposition of heavy metals on road surfaces was proportional to traffic intensity (vehicles/day). In this regard, Bannerman et al (13) and Zafra et al (14) observed that the amount of lead, zinc and copper present in runoff and road sediment could be related to the intensity of vehicular traffic. However, Barrett et al (15) suggested that traffic intensity was only significant at the local scale (road neighborhood) and that the variation of metal concentration was attributable to other factors such as emissions from industrial sources at a large scale (regional).…”

Section: Introductionmentioning

confidence: 99%

Correlation between vehicular traffic and heavy metal concentrations in road sediments of Bogotá, Colombia

Zafra-Mejía

Gutiérrez-Malaxechebarria

Hernández-Peña

2019

Rev. Fac. Med.

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“…Es decir, fueron sumideros de metales pesados y otros compuestos que provinieron de diversas fuentes de contaminación (Liu et al, 2014). La principal ventaja del uso de sedimentos viales en investigaciones sobre urbanismo, ambiente y salud pública radicó en que éstos fueron utilizados como indicadores de la calidad del agua, aire y suelo debido a los procesos de transporte y dispersión a los cuales estuvieron sometidos en el hábitat urbano (Amato et al, 2013;Zafra et al, 2017): (i) deposición (v.g., suelo y superficies impermeables), (ii) remoción (escorrentía y viento), (iii) suspensión (viento y turbulencia del tráfico), e (iv) intercepción (vegetación y mobiliario urbano).…”

Section: Introductionunclassified

Contaminación y salud pública en hábitats urbanos: metales pesados en sedimentos viales de Bogotá, Colombia

Zafra-Mejía

Vargas

Peña

2020

reveia

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ResumenLos organismos de investigación en urbanismo, ambiente y salud pública reportan el interés creciente de estudiar la contaminación por metales pesados (MP) en hábitats urbanos. Se presenta un estudio observacional descriptivo de las concentraciones de MP en sedimentos viales de un hábitat urbano latinoamericano: Bogotá-Colombia. Existió coincidencia entre las concentraciones de MP reportadas a nivel mundial y las observadas en Bogotá. Las concentraciones en Bogotá tendieron a ser inferiores a las reportadas en ciudades de Norteamérica-Europa-Asía. El elemento más crítico fue el Pb. Este metal superó entre 1,02-4,30 veces el límite legislativo de referencia más exigente por ingestión, inhalación y contacto dérmico (Cataluña-España: 60 mg/kg). Durante periodos climáticos de tiempo seco se observaron incrementos en las concentraciones de MP, entre 1,31-2,11 veces. Los hallazgos se constituyen en un punto de referencia durante el desarrollo de estrategias para la protección de la salud pública y el ambiente en hábitats urbanos.Palabras clave: hábitats urbanos, metales pesados, salud pública. AbstractResearch agencies in urban planning, environment, and public health report the growing interest of studying the pollution by heavy metals (HMs) in urban habitats. A descriptive observational study of the HM concentrations in road sediments of an urban habitat in Latin America is displayed: Bogota-Colombia. There was a coincidence between the HM

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The physical factors affecting heavy metals accumulated in the sediment deposited on road surfaces in dry weather: a review

Cited by 39 publications

References 92 publications

Spatial distribution of pollution characteristics and human health risk assessment of exposure to heavy elements in road dust from different functional areas of Zhengzhou, China

Spatial distribution of pollution characteristics and human health risk assessment of exposure to heavy elements in road dust from different functional areas of Zhengzhou, China

Correlation between vehicular traffic and heavy metal concentrations in road sediments of Bogotá, Colombia

Contaminación y salud pública en hábitats urbanos: metales pesados en sedimentos viales de Bogotá, Colombia

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