The influence of traffic density on heavy metals distribution in urban road runoff in Beijing, China

Du, Xiaoli; Zhu, Ying‐Jie; Han, Qing; Yu, Zhenya

doi:10.1007/s11356-018-3685-4

Cited by 55 publications

(15 citation statements)

References 28 publications

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“…As of April 2018, there were c.38M licensed vehicles on Britain's roads, a number that has been growing by c.640 thousand vehicles per year since 2012 (Gov.uk 2018). Traffic density is intrinsically linked to heavy metal contaminants (Hares and Ward 1999;Ewen et al 2009;Du et al 2018) and as such the exponential growth of motor vehicles and resultant increases in traffic density has led to escalating amounts of pollution.…”

Section: Introductionmentioning

confidence: 99%

The removal of lead, copper, zinc and cadmium from aqueous solution by biochar and amended biochars

Cairns

Robertson

Sigmund

et al. 2020

Environ Sci Pollut Res

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The exponential growth in the use of motor vehicles is a key contributor to freshwater degradation. Current remediation techniques require prohibitively expensive contaminant treatment and extraction. Biochar represents an inexpensive option to ameliorate contaminants from motorway runoff. Biochar from Norway spruce (Picea abies (L.) Karst.) was produced under fast pyrolysis-gasification (450-500 °C for 90 s) and amended with wood ash and basaltic rock dust to evaluate sorption of Pb, Cu, Zn and Cd. The column study, designed to mimic field conditions, confirmed that unamended biochar can bind contaminants for short periods, but that the addition of amendments, particularly wood ash, significantly improves contaminant removal.Wood ash-amended biochar removed 98-100% of all contaminants during the study, driven by pH (r = 0.73-0.74; p < 0.01 dependent on metal species) and phosphorus levels causing precipitation (r = 0.47-0.59; p < 0.01, dependent on metal species). The contaminants' progression through the biochar subsections in the column indicated that increasing the thickness of the biochar layer increased contaminant residence time and removal.

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Section: Introductionmentioning

confidence: 99%

The removal of lead, copper, zinc and cadmium from aqueous solution by biochar and amended biochars

Cairns

Robertson

Sigmund

et al. 2020

Environ Sci Pollut Res

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show abstract

“…At present, with the rapid development of industry and agriculture, a large number of excessive metal waste and agricultural sewage flow into the environment (Soffianian et al 2014;Du et al 2019). Heavy metals in nature are difficult to remove and degraded, which not only affects the safety of the ecological environment, but also poses a threat to food safety and human health (Alfven et al 2000;Qian et al 2009;Ogbomida et al 2018).…”

mentioning

confidence: 99%

Exogenous γ-glutamic acid (GABA) induces proline and glutathione synthesis in alleviating Cd-induced photosynthetic inhibition and oxidative damage in tobacco leaves

Liu

Li³

et al. 2021

Journal of Plant Interactions

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The effects of exogenous γ-glutamic acid (GABA) on photosynthetic gas exchange capacity, PSII function, proline (Pro) synthesis and ROS metabolism of tobacco leaves under cadmium (Cd) stress were studied. The results showed that both stomatal and non-stomatal factors were the important factors to limit the photosynthetic capacity of tobacco leaves under Cd stress. Pro accumulation and glutathione (GSH) content increase are the important ways for tobacco leaves to adapt to Cd stress. Exogenous GABA significantly increased the stability of oxygen-evolving complex (OEC) and the electron transfer rate of PSII in tobacco leaves under Cd stress, and increased G s and P n in varying degrees. Exogenous GABA also increased the expression of P5CS and P5CR genes in tobacco leaves under Cd stress, thus promoting Pro accumulation. In conclusion, 0.5 mmol•L −1 exogenous GABA can not only improve the carbon assimilation ability by increasing the G s , but also alleviate the oxidative damage by promoting the synthesis and accumulation of Pro and GSH, and improve the stability of photosynthetic function of tobacco leaves under Cd stress.

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“…The highest concentrations of heavy metals and As were found in soils of the agricultural section. This is because the agricultural section is close to the main road, where heavy metals and As mainly come from the long‐term deposition of traffic pollutants (Bignal et al 2008; Mazurek et al 2017; Men et al 2018; Du et al 2019). For species living in this Pb (B)–Hg (B) zone of each of the three distribution patterns, the Pb and Hg content of the bryophytes were the main driving factors for bryophyte distribution.…”

Section: Discussionmentioning

confidence: 99%

Effects of environmental factors and heavy metals on the vertical distribution of bryophytes in a sinkhole environment

Zhang

Wang

et al. 2020

Plant Biol J

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• A sinkhole ecosystem, as a refuge for plant diversity, has been subjected to intensive exploitation, leading to ecosystem destruction of sinkholes in China. Understanding the responses of bryophyte distribution to destruction of the sinkhole environment are crucial to implementing protection measures for bryophyte diversity. • Haolong sinkhole in Guangxi Zhuang Autonomous Region of China, the third largest sinkhole in the world, was selected as the study area. The Wilson Shmida index was used to analyse bryophyte species diversity; a Generalized Linear Model (GLM) was used to reveal species vertical distribution of bryophytes, the Single and Multiple Species Distribution Models (SSDM, MSDM) were used for analysis of the relationship between bryophyte species distribution, environmental factors and heavy metals. • A total of 183 species from 74 genera in 36 families of bryophytes were collected from Haolong sinkhole, of which 26 species are endemic to China. Bryophyte species diversity was ranked in the order: agricultural section < forest section < grassland. In the vertical direction, bryophyte distribution was divided into point, disjunctive and continuous distributions using the GLM. The SSMA and MSDM indicated that bryophyte species of each of these three distributions can be divided into a temperature-slope zone, light-depth-pH-humidity zone, Pb (B)-Hg (B) zone and mixed heavy metals zone according to the effect of environmental factors and heavy metals such as As. • Environmental factors or heavy metals, such as As, in Haolong sinkhole effectively cooperate in bryophyte distribution. An effective way to protect bryophyte diversity, in particular species endemic to China in the sinkhole environment, is through education and involvement of the local villagers to minimize further damage to the sinkhole environment.

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The influence of traffic density on heavy metals distribution in urban road runoff in Beijing, China

Cited by 55 publications

References 28 publications

The removal of lead, copper, zinc and cadmium from aqueous solution by biochar and amended biochars

The removal of lead, copper, zinc and cadmium from aqueous solution by biochar and amended biochars

Exogenous γ-glutamic acid (GABA) induces proline and glutathione synthesis in alleviating Cd-induced photosynthetic inhibition and oxidative damage in tobacco leaves

Effects of environmental factors and heavy metals on the vertical distribution of bryophytes in a sinkhole environment

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