scholarly journals Pollution feature analysis on heavy metals in rainfall runoff of Qingdao residential area

2015 ◽  
Author(s):  
Chunrong Zhang ◽  
Chunjin Zhang ◽  
Zongjun Gao ◽  
Zhenglong Wu
Keyword(s):  
Heavy Metals ◽  
Residential Area ◽  
Feature Analysis ◽  
Rainfall Runoff

Refined Simulation Method of the Rainfall–Runoff Processes in a Residential Area with LID Measures

2021 ◽  
Vol 26 (12) ◽  
pp. 04021038
Author(s):  
Jingming Hou ◽  
Xinghua Wang ◽  
Bingyao Li ◽  
Xujun Gao ◽  
Miansong Huang ◽  
...  
Keyword(s):  
Simulation Method ◽  
Residential Area ◽  
Rainfall Runoff

scholarly journals The present condition of soil contamination with heavy metals in Honshu and Kyushu residential area

2002 ◽  
Vol 10 ◽  
pp. 263-268
Author(s):  
Osamu BANNAI ◽  
Tatsuya TANIKOSHI ◽  
Minoru YONEDA ◽  
Shinsuke MORISAWA
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Residential Area ◽  
Present Condition

Monitoring of ambient particles and heavy metals in a residential area of Seoul, Korea

2007 ◽  
Vol 137 (1-3) ◽  
pp. 441-449 ◽  
Author(s):  
Eun-jung Park ◽  
Dae-seon Kim ◽  
Kwangsik Park
Keyword(s):  
Heavy Metals ◽  
Residential Area ◽  
Ambient Particles

scholarly journals Heavy Metal Emission Characteristics of Urban Road Runoff

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Xintuo CHEN ◽  
Chengyue LAI ◽  
Yibin YUAN ◽  
Jia SHE ◽  
Yiyao WANG ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Early Stage ◽  
Effective Means ◽  
Heavy Metal Concentration ◽  
Peak Time ◽  
Rainfall Runoff ◽  
Dissolved Heavy Metals ◽  
Concentration Changes ◽  
Set Up

Pavement runoff sampling points were set up on the main roads of Chengdu city. Six rainfall-runoff events from July to September in 2017 were sampled by synchronous observation of rainfall, runoff and pollution. The concentration changes of copper, lead, zinc, chromium and cadmium in the runoff process were monitored, and the pollution emission regularity and initial scouring effect were studied. The results show that the emission regularity of pavement runoff pollution is closely related to rainfall characteristics and pollutant occurrence, and the concentration of dissolved heavy metals reaches its peak at the initial stage of runoff. The peak time of particulate heavy metal concentration lagged slightly behind that of rainfall intensity. There is a big difference between the strength of initial scouring degree and dissolved heavy metals the stronger the initial scouring degree of total heavy metals, the weaker the dissolved heavy metals. Reducing pavement runoff in the early stage of rainfall is an effective means to control heavy metal pollution.

scholarly journals Determination of Heavy Metal Contamination and Pollution Indices of Roadside Dust in Dhaka City, Bangladesh

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1732
Author(s):  
Md Humayun Kabir ◽  
Md Harun Rashid ◽  
Qingyue Wang ◽  
Weiqian Wang ◽  
Senlin Lu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Winter Season ◽  
Residential Area ◽  
Summer Season ◽  
Pollution Indices ◽  
Dhaka City ◽  
Commercial Area ◽  
Roadside Dust ◽  
Cu And Zn

Urban roadside dust samples from Dhaka City in Bangladesh were collected from a planned residential area (PRA), spontaneous residential area (SRA), commercial area (CA), and urban green area (UGA) in winter and summer to study how season and different urban land-use categories influence the concentrations of heavy metals (Cr, Mn, Co, Ni, Cu, Zn, As, and Pb) and different pollution indices. The dust samples were fractionated into <32 μm particles, extracted by acid digestion followed by estimation of heavy metals, using ICP-MS. Pollution indices were calculated from the metal concentrations, using standard protocols. The concentrations of heavy metals in roadside dust varied significantly (all p < 0.05), due to sampling seasons and the land-use category. Higher concentrations of heavy metals (Cr, Mn, Ni, Cu, Zn, and Pb) were found in the dust sampled during the winter season than in the summer season, except for As and Co. The geo-accumulation index (Igeo) indicated that the commercial area was heavily contaminated with Cu and Zn during the winter season. The contamination factor (CF) was higher for Cu and Zn in the CA, PRA, and SRA of Dhaka City in winter than in the summer season. The enrichment factor (EF) suggested that Mn and Co were the least enriched metals, and significant enrichment was seen for Cu and Zn for all land-use categories, both in summer and winter. A moderate potential ecological risk for Cu was estimated in CA and PRA in the winter season.

scholarly journals Removal of Heavy Metals from Stormwater Using Porous Concrete Pavement

2020 ◽  
Vol 7 (1) ◽  
pp. 37-44
Author(s):  
Kalimur Rahman ◽  
Saurav Barua ◽  
Md. Shibly Anwar ◽  
Md. Zakir Hasan ◽  
Saiful Islam
Keyword(s):  
Heavy Metals ◽  
Fine Sand ◽  
Coarse Sand ◽  
Concrete Pavement ◽  
Base Layer ◽  
Experimental Investigations ◽  
Rainfall Runoff ◽  
Porous Concrete ◽  
Removal Of Heavy Metals ◽  
Collection Point

This study aimed to investigate the heavy metals, i.e. Cu, Pb, Ni, and Zn removal efficiency from stormwater runoff of a porous concrete pavement (PCP). A model of PCP was designed with the porosity and co-efficient of permeability of the pavement were 27.2% and 1.83 cm/sec, respectively. Artificial stormwater containing heavy metals are passed through the pavement at a constant rainfall rate to mimic the stormwater rainfall-runoff condition. The artificial stormwater infiltrated through the pavement were then collected at two different pavement layers at different time instances. From the experimental investigations, it is observed that Cu, Pb, Ni and Zn concentrations are significantly reduced in the treated stormwater. At the first collection point which is located below the sub-base layer and coarse sand layer of the pavement, the concentrations of Cu, Pb and Zn reduced 56%, 67% and 93% respectively compared to their initial concentration, Ni concentration reduced only 20%. At the second collection point which is located below the coarse and fine sand layers beneath the pavement, the concentrations of Cu, Pb, Zn, and Ni are reduced 92%, 89%, 100%, 100%, respectively.

scholarly journals Evaluation of Health Risk from Concentrations of Heavy Metal in PM-10 and PM-2.5 particles at Sasang Industrial Complex of Busan, Korea

2021 ◽  
Vol 24 (3) ◽  
pp. 133-148
Author(s):  
Seong-Hwa Choi ◽  
Seong-Woo Choi ◽  
Dong-Yeong Kim ◽  
Young-Wook Cha ◽  
Seung-Woo Park ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Cancer Risk ◽  
Health Risk ◽  
Residential Area ◽  
Hazard Identification ◽  
Industrial Complex ◽  
Fine Dust ◽  
Pm 2.5 ◽  
Excess Cancer Risk ◽  
Pm 10

We investigated the distribution of hazardous heavy metals (As, Cr6+, Ni, Cd, Pb, and Mn) and estimated the health risk related to the heavy metals in fine dust (PM-10 and PM-2.5) of Sasang industrial complex, Busan, Korea. The concentration of fine dust in the industrial complex was 1.2 times higher than in a residential area, while harmful heavy metals showed a difference of at least 1.3 times (Cd) and up to 6.5 times (Ni). The concentration of fine dust and carcinogenic heavy metals in the industrial complex increased significantly compared to the residential area in spring (March to May) and winter (December to February) months. A risk assessment was performed using Monte-Carlo simulations containing a four-step procedure. During hazard identification, As, Cr6+ Ni, Cd, and Pb were categorized as human carcinogens and probable human carcinogens and evaluated for their levels of excess cancer risk. For concentrations of over 90% Cr6+ and As, the excess cancer risk was over 10-5 (1 person per 100,000). The non-cancer hazard index of As, Cr6+, Cd, and Mn was below the limit value of 1.

scholarly journals Evaluation of heavy metals in some selected medicinal plants growing within the University of Ibadan Campus

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Samsideen O. Rufai ◽  
Musbau B. Olaniyi ◽  
Ibraheem O. Lawal
Keyword(s):  
Heavy Metals ◽  
Medicinal Plants ◽  
Room Temperature ◽  
Botanical Garden ◽  
Residential Area ◽  
Wet Digestion ◽  
Heavy Metals Accumulation ◽  
Therapeutic Molecules ◽  
The University ◽  
University Of Ibadan

Background: Medicinal plants are a potent source of therapeutic molecules that heal various diseases in the world.Aim: The aim of this study was to evaluate heavy metal concentrations in the leaves of some selected medicinal plants in selected locations.Setting: The leaves of Azadirachta indica, Magnifera indica and Newbouldia laevis were collected from the botanical garden, roadside and residential area in the University of Ibadan and were authenticated at the Forest Herbarium Ibadan. The samples were thoroughly washed with deionised water and air-dried at room temperature for about three weeks, then ground into powder with a mechanical grinder. The samples were subsequently stored in air-tight bottles for further work.Methods: The milled samples were subjected to wet digestion, and then lead (Pb), chromium (Cr), cadmium (Cd) and nickel (Ni) were analysed using standard methods.Results: The results obtained show that the highest concentrations of Pb, Cr and Cd in the medicinal plants studied were found in N. laevis (23.93 ppm; road side), N. laevis (4.79 ppm; road side) and M. indica (0.36 ppm; road side), respectively, while the lowest concentrations of Pb, Cr and Cd were found in A. indica (7.10 ppm; botanical garden), N. laevis (0.73 ppm; residential) and N. laevis (0.05 ppm; residential), respectively. Ni was totally undetected in all three medicinal plants studied in all the locations.Conclusion: The concentrations of heavy metals at the roadside and residential area were higher than permissible limits set for medicinal plants, but the botanical garden was the lowest and safest in terms of heavy metals accumulation in the medicinal plants studied in the three locations.

scholarly journals Ecological risk assessment of heavy metals in rainfall runoff of different land use types in Suzhou of Taihu Basin

2020 ◽  
Vol 32 (6) ◽  
pp. 1620-1631
Author(s):  
SUN Tiantian ◽  
◽  
TIAN Yongjing ◽  
ZHAO Wei ◽  
SUN Kang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Land Use ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Rainfall Runoff ◽  
Taihu Basin ◽  
Land Use Types
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