Characteristic contaminants in snowpack and snowmelt surface runoff from different functional areas in Beijing, China

2018 ◽  
Vol 25 (36) ◽  
pp. 36256-36266 ◽  
Author(s):  
Donghai Yuan ◽  
Yuqin Liu ◽  
Xujing Guo ◽  
Jianying Liu
2013 ◽  
Vol 8 (1) ◽  
pp. 084596 ◽  
Author(s):  
Zhongchang Sun ◽  
Xinwu Li ◽  
Wenxue Fu ◽  
Yingkui Li ◽  
Dongsheng Tang

2022 ◽  
Vol 115 ◽  
pp. 277-285
Author(s):  
Kun Lv ◽  
Lu Bai ◽  
Boyu Song ◽  
Xindong Ma ◽  
Minmin Hou ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-10
Author(s):  
Haiyan Li ◽  
Mingxiu Wang ◽  
Wenwen Zhang ◽  
Ziyang Zhang ◽  
Xiaoran Zhang

To identify the distribution of heavy metals in sewer sediments and assess their potential harmfulness to the environment and human health, the occurrence of Pb, Zn, Cu, and Cd in the sewer sediment of six functional areas and two streets in an inner-city suburb of Beijing, China, was investigated by using a sequential extraction procedure. Results show that the concentrations of Cu, Zn, Cd, and Pb vary between 50 and 175, between 80 and 180, between 0.75 and 2.5, and between 20 and 110 mg/kg, respectively, and Fe-Mn oxide fraction is significant for all metals in sampling areas. Pollution assessment shows that 1–2% of Cu at Chegongzhuang Street and 1–3% of Zn at Fuwai Street in the exchangeable fractions are of low risk. 10–25% of Cd at six functional areas indicates medium risk. 40–60% of Pb at Fuwai Street existing in the exchangeable fractions is of high to very high risk. The sum of these metals associated with exchangeable, carbonate bound, and Fe-Mn oxide fractions is quite high; however, these three fractions represent the proportion of heavy metals that can be remobilized by changes in environmental conditions.


2018 ◽  
Vol 28 (4) ◽  
pp. 162-165
Author(s):  
Richard C. Shiell ◽  
Damkerng Pathomvanich ◽  
Bertram M. Ng ◽  
Damkerng Pathomvanich

This article analyzes the main problems of urban public spaces, because today public spaces can determine the future of cities. It is noted that parks are multifunctional public spaces in the urban environment, as they are an important element of the citywide system of landscaping and recreation, perform health, cultural, educational, aesthetic and environmental functions. The article notes that the need for easily accessible and well-maintained urban parks remains, however, the state of parks in many cities of Russia remains unsatisfactory, requiring reconstruction. A brief historical background of the Park of Culture and Rest of the Soviet period in Omsk is expounded, the analysis of the existing territory of the Park is presented. It is revealed that the Park, being the largest public space in Omsk, does not meet the requirements of modern urbanism, although it represents a great potential for designing the space for the purpose of recreation of citizens. Performed functional zoning scheme of the territory of the Park in question, where its division into functional areas destined for active recreational users of the Park is presented, considered the interests of senior citizens, people with limited mobility, etc. Reconstruction of Parks of the Soviet period can provide the city with additional recreational opportunities, as well as increase its tourist attractiveness.


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