Heavy metals contamination in road dust in Delhi city, India

Rajaram, B.; Suryawanshi, P.; Bhanarkar, A. D.; Rao, C. V. Chalapati

doi:10.1007/s12665-014-3281-y

Cited by 103 publications

(38 citation statements)

References 35 publications

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“…The number of PCs that can be extracted depends on the retained variance of each PC (Franco et al, 2015). In this study, for the purpose of this exercise, a data matrix consisting of nine sites and six metals was considered (Rajaram et al, 2014). PCA was performed by applying varimax rotation with Kaiser's normalization with eigenvalues > 1 to identify the sources of heavy metals in road dust.…”

Section: Discussionmentioning

confidence: 99%

“…The road dust metal concentrations described in Rajaram et al (2014) were also utilized to estimate metal contamination assessment.…”

Section: Metal Contamination Assessment Methodsmentioning

confidence: 99%

“…A representative composite bulk sample for every sampling location was obtained by taking subsamples from three points of the road at each location and then mixing thoroughly. Description of sampling locations is presented in Rajaram et al (2014).…”

Section: Sample Collection and Analysismentioning

confidence: 99%

“…All extractions and analysis were made with replicate samples (n = 3) and the mean values were reported. The details of sampling and analysis methodology are presented in a previous study (Rajaram et al, 2014).…”

Section: Sample Collection and Analysismentioning

confidence: 99%

“…Only few studies on quantification and distribution of metals in road dust have been conducted recently in Indian cities (Chatterjee and Banerjee, 1999;Banerjee, 2003;Rawat et al, 2009;Rajaram et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Determining heavy metal contamination of road dust in Delhi, India

Suryawanshi

Rajaram

Bhanarkar

et al. 2016

ATM

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RESUMENLa contaminación del aire es considerada como uno de los mayores desafíos ambientales debido a sus efectos sobre los ecosistemas y la salud humana. En este estudio se investigan los niveles de concentración y las fuentes de la contaminación por metales pesados en muestras de polvo de caminos recolectadas en varios sitios que incluyen áreas con cuatro actividades diferentes en Delhi, India: industriales, carreteras, residenciales y de uso mixto. El contenido de metales en polvo de caminos se analizó mediante espectroscopia de emisión atómica por plasma de acoplamiento inductivo. Los resultados muestran altos niveles de concentración de Ni, Cr y Pb en áreas industriales. Los coeficientes de correlación de Pearson acoplados con análisis de componentes principales revelaron que el CD, el Cr, el Ni y el Pb están vinculados con fuentes industriales en tanto que el Zn y el Cu proceden principalmente del tráfico vehicular. La contaminación en polvo de caminos se valoró a través de varios métodos: grado de contaminación, índice ecológico e índice de contaminación. El análisis de los factores de contaminación reveló que las muestras de polvo de caminos estaban contaminadas de manera considerable con Zn y Pb. Los índices de potencial ecológico indicaron la presencia de contaminación significativa por Cd y moderada por Pb en el polvo de camino, en tanto que la contaminación por Cr, Cu, Ni y Zn fue baja. El índice de contaminación de la mayoría de los metales fue mayor a 1, lo cual revela un deterioro en la calidad del polvo de caminos en Delhi a causa de las emisiones antrópicas. El grado de contaminación, el índice de potencia ecológico y el índice integrado de contaminación indican que el polvo de caminos en áreas industriales, de carreteras y de uso mixto exhiben alta contaminación por metales pesados. El polvo del camino también está contaminado de manera significativa. Evaluaciones realizadas por diversos métodos indicaron que todas las técnicas son importantes para valorar la calidad ambiental. ABSTRACTAir pollution has been considered one of the major environmental challenges because of its effect on ecosystems and human health. The concentration levels and sources of heavy metals contamination were studied in road dust samples collected from various locations including four different activity areas: industrial, highways, residential and mixed use in Delhi, India. Metal content in road dust was analyzed by inductively coupled plasma atomic emission spectroscopy. The results showed high concentration levels of Ni, Cr and Pb in industrial areas. Pearson's correlations coupled with principal component analysis revealed that Cd, Cr, Ni and Pb are associated with industrial sources whereas Zn and Cu are mainly contributed by vehicular traffic. Road dust contamination was assessed by various methods: degree of contamination, potential ecological index and pollution index. Contamination factor analysis showed that road dust samples are significantly contaminated by Zn and Pb. The potential ecological indices indicate...

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Section: Discussionmentioning

confidence: 99%

“…The road dust metal concentrations described in Rajaram et al (2014) were also utilized to estimate metal contamination assessment.…”

Section: Metal Contamination Assessment Methodsmentioning

confidence: 99%

Section: Sample Collection and Analysismentioning

confidence: 99%

Section: Sample Collection and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determining heavy metal contamination of road dust in Delhi, India

Suryawanshi

Rajaram

Bhanarkar

et al. 2016

ATM

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Rising Extreme Event of Smog in Northern India: Problems and Challenges

Sharma

Masiwal

2022

Extremes in Atmospheric Processes and Phenomenon: Assessment, Impacts and Mitigation

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Study on Airborne Heavy Metals in Industrialized Urban Area of Delhi, India

Mandal

Sarkar

Mandal

et al. 2016

Bull Environ Contam Toxicol

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This study assessed the concentrations of airborne heavy metals (HMs) in particulate matter with a cutoff size of 10 µm (i.e., PM) in an industrialized urban area (Naraina Industrial Area) of New Delhi, India. The samples were collected from January to December, 2011. The annual mean concentrations of selected HMs were as follows As (0.002 ± 0.002), Cd (0.030 ± 0.020), Co (0.003 ± 0.002), Cr (0.170 ± 0.081), Cu (0.183 ± 0.120), Fe (4.774 ± 1.889), Mn (0.258 ± 0.145), Ni (0.170 ± 0.146), Pb (0.345 ± 0.207) and Zn (1.806 ± 1.042) µg/m. The seasonal trend for HMs followed the order postmonsoon > winter > premonsoon > monsoon. Principal component analysis-multiple linear regression (PCA-MLR) suggested the three major emission sources: industrial emission (70 %), mobile and stationary combustion sources (16 %), and suspended/re-suspended dust (14 %). Mean seasonal concentrations of PM exceeded both the 24-hour and annual Indian National Ambient Air Quality Standards (NAAQS) of 60 and 100 µg/m, respectively, in all four seasons. Mean seasonal Ni concentrations in Delhi ambient air also exceeded the 24-h annual NAAQS of 0.020 µg/m during all four seasons. Mean Pb concentrations exceeded the annual NAAQS of 0.50 µg/m only during the post monsoon season. The high levels of Ni- and Pb-contaminated PM would appear to present the possibility of significant health risks.

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Heavy metals contamination in road dust in Delhi city, India

Cited by 103 publications

References 35 publications

Determining heavy metal contamination of road dust in Delhi, India

Determining heavy metal contamination of road dust in Delhi, India

Rising Extreme Event of Smog in Northern India: Problems and Challenges

Study on Airborne Heavy Metals in Industrialized Urban Area of Delhi, India

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