A comparative study of elemental pollution and health risk assessment in urban dust of different land-uses in Tehran’s urban area

Mihankhah, Taraneh; Saeedi, Mohsen; Karbassi, Abdolreza

doi:10.1016/j.chemosphere.2019.124984

Cited by 74 publications

(23 citation statements)

References 38 publications

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“…According to a land use analysis, industrial regions were more prone to high PM 2.5 concentrations and NAQI state, followed by the commercial and residential sectors. Kaushik et al (2006) , Kumar et al (2010) , Mathew et al (2015) , Shairsingh et al (2018) , Mihankhah et al (2020) reported similar results. This is primarily due to high level of pollution emitted by the companies.…”

Section: Discussionmentioning

confidence: 54%

Revisiting air quality during lockdown persuaded by second surge of COVID-19 of megacity Delhi, India

Mahato¹,

Pal²

2022

Urban Climate

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Is the impact of city-scale lockdown in response to 2nd surge of COVID-19, behavioural changes in people owing to yearlong cohabitation with COVID-19, and partial vaccination on air quality different from the impact of nationwide lockdown during COVID-19's 1st surge in March 2020? Targeting this objective, the present work has selected four phases pre-lockdown and lockdown of 1st and 2nd cycles of lockdown taking average air quality index (NAQI) from Central Pollution Control Board (CPCB). The results clearly show that both the nationwide lockdown and the city-scale restriction are responsible for improving air quality in India's megacity Delhi, but the rate of improvement was higher (39%) during the first cycle of lockdown (nationwide) than during the second cycle of lockdown (city-scale). During city-scale lockdown, the disparity in NAQI between the core and the periphery is obvious. Due to the effect of economic activities surrounding Delhi, around 10 km of the city's interior has experienced high NAQI. The reason for the lower NAQI improvement during the second lockdown cycle is likely due to relief from initial fear following a year of cohabitation with COVID-19, partial vaccination, and partial relaxation in industrial sectors to avoid the economic hardships experienced during the first lockdown cycle.

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Section: Discussionmentioning

confidence: 54%

Revisiting air quality during lockdown persuaded by second surge of COVID-19 of megacity Delhi, India

Mahato¹,

Pal²

2022

Urban Climate

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“…A very significant accumulation of MTE was noted in the station of Sidi Haider (station that shelters an automobile breakage), this accumulation is the consequence of contamination by the products of decomposition of this waste materials. Several studies have reported this type of contamination of soil and vegetation by the deposition of particles from automobile wear (Lange et al 2017;Zanello et al 2018;Bernardino et al 2019;Mihankhah et al 2020).…”

Section: Discussionmentioning

confidence: 96%

Heavy metals accumulation in Hertia cheirifolia along the highway in Setif region, Algeria

2020

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Abstract. Belguidoum A, Lograda T, Ramdani M. 2020. Heavy metals accumulation in Hertia cheirifolia along the highway in Setif region, Algeria. Biodiversitas 21: 2786-2793. The aim of this work was to study the possibility of using Hertia cheirifoia spontaneous plant, generally present in uncultivated environments, as an indicator of pollution. The aerial parts of ten H. cheirifolia populations were collected along the East-West highway. Sampling is carried out in areas considered polluted or low contaminated in the region of Setif. Nine metallic trace elements concentrations (Pb, Zn, Cu, Fe, Mn, Cd, Ag, Bi, and Sb) were determined, for each population, by Atomic Absorption Spectrophotometry with Flame (AASF). Statistical analyzes were performed using mainly box and whisker diagrams, principal component analysis, and UPGMA. The concentrations detected for contaminants (MTE), in general, were very high, far exceeding international certified standards. The MTE concentrations in different populations were calculated for each metal and a positive correlation is observed. The order of MTE in the plant was found as follows: Fe > Zn > Mn > Pb > Sb > Cu > Bi > Ag > Cd. The Fe concentrations are very high in H. cheirifolia with an average of 3600 ± 1491.5 mg/kg. The populations of H. cheirifolia have shown a significant capacity to accumulate heavy metals. The presence of metal ions in the aerial parts of the plant designates that H. cheirifolia is a super accumulator of MTE and can be used as a bioindicator, which opens up prospects for its application to soils phytoremediation.

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“…Long and continuous monitoring should be conducted in future to further identify the effects of street trees on the urban thermal environment and human physiological indices. In addition, our study only examined the thermal environment while other factors such as air pollution and noise may also affect human physiology (Mihankhah et al 2020). Secondly, we only investigated the relationship between human physiological indices and the urban thermal environment of six young men (22-year-olds) which is a very limited sample, and the results cannot be extrapolated to populations of females or people of different ages.…”

Section: Discussionmentioning

confidence: 99%

Effects of urban street trees on human thermal comfort and physiological indices: a case study in Changchun city, China

Ren

Zhao

et al. 2021

J. For. Res.

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Planting trees along urban streets is one of the most important strategies to improve the urban thermal environment. However, the net impacts of urban street trees on human thermal comfort and physiological parameters are still less clear. On three similar east–west orientated streets with different degrees of tree cover—low (13%), medium (35%), and high (75%), urban microclimatic parameters and human physiological indices for six male students were simultaneously measured on three cloudless days in summer 2018. The results show that the differences in tree cover were predominant in influencing urban thermal environment and comfort. The street with the highest tree cover had significantly lower physiological equivalent temperature (PET) and more comfortable than the other two streets. The frequency of strong heat stress (PET > 35 °C) was 64%, 11%, and 0%, respectively, for streets with low, medium, and high tree cover. For the six male university students, human physiological indices varied greatly across the three streets with different tree cover. Systolic blood pressure, diastolic blood pressure, and pulse rate increased with decreasing tree cover. The results also suggest that urban thermal environment and comfort had considerable impact on human physiological parameters. Our study provides reasons for urban planners to plant trees along streets to improve the thermal environment and promote urban sustainability.

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A comparative study of elemental pollution and health risk assessment in urban dust of different land-uses in Tehran’s urban area

Cited by 74 publications

References 38 publications

Revisiting air quality during lockdown persuaded by second surge of COVID-19 of megacity Delhi, India

Revisiting air quality during lockdown persuaded by second surge of COVID-19 of megacity Delhi, India

Heavy metals accumulation in Hertia cheirifolia along the highway in Setif region, Algeria

Effects of urban street trees on human thermal comfort and physiological indices: a case study in Changchun city, China

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