Occurrence and dietary exposure risks of phthalate esters in food in the typical valley city Xi’an, Northwest China

Air flow and pollutant dispersion characteristics in a real valley city are studied under the real boundary condition. The 3D computational fluid dynamics using Reynolds-averaged Navier-Stokes modeling was carried out in Lanzhou which is a typical valley city in Northwest, China. The standard κ-ε turbulence model as a simplified computational fluid dynamics model is used to provide moderately fast simulations of turbulent airflow in an urban environment. The modeled flow field indicated that the geometry, wind direction and source location had a significant effects on the flow field. The flow shows the funnelling is rather obvious when the wind flow through the narrow area in the middle of the city. It is obvious that in the high-altitude region, due to the impact of high and low differential pressure and terrain, SO2 and NO2 formed two cyclic concentration field in the dispersion process.

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Volatile organic compounds in a typical petrochemical industrialized valley city of northwest China based on high-resolution PTR-MS measurements: Characterization, sources and chemical effects

The Science of The Total Environment ◽

10.1016/j.scitotenv.2019.03.283 ◽

2019 ◽

Vol 671 ◽

pp. 883-896 ◽

Cited By ~ 12

Author(s):

Xi Zhou ◽

Zhongqin Li ◽

Tinjun Zhang ◽

Fanglin Wang ◽

Feiteng Wang ◽

...

Keyword(s):

High Resolution ◽

Volatile Organic Compounds ◽

Organic Compounds ◽

Northwest China ◽

Chemical Effects ◽

Volatile Organic ◽

Valley City

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The effect of heavy rainfall on the exposure risks of sedimentary phthalate esters to aquatic organisms

Chemosphere ◽

10.1016/j.chemosphere.2021.133204 ◽

2021 ◽

pp. 133204

Author(s):

Chih-Feng Chen ◽

Yun-Ru Ju ◽

Yee Cheng Lim ◽

Ming-Huang Wang ◽

Anil Kumar Patel ◽

...

Keyword(s):

Heavy Rainfall ◽

Phthalate Esters ◽

Aquatic Organisms ◽

Exposure Risks

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Multi-Scale Spatial Analysis of Valley City in Northwest China Based on GIS — Taking Yan’an as an Example

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.518-523.5715 ◽

2012 ◽

Vol 518-523 ◽

pp. 5715-5718

Author(s):

Lan Li ◽

Xiao Jian Chen

Keyword(s):

Land Use ◽

Urban Space ◽

Spatial Scales ◽

Northwest China ◽

Scale Space ◽

Internal Space ◽

Healthy Development ◽

Multi Scale ◽

Land Use Types ◽

Valley City

This article takes typical Valley City in Northwest as the research object and takes Yanan as an example. Firstly, the urban space is analyzed and divided during the thinking of multi-scale science, and then the image of Yanan in 2011is interpreted and the internal space and external morphology can be quantitatively analyzed at multiple spatial scales using the method of GIS. The analysis shows that different feature of land use types in different scale space and terrain on different land use types distribution impact. The research findings are meaningful for the spatial expansion, update, spatial layout of the valley city in Northwest and contribute to the healthy development of the city in northwest area.

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