scholarly journals Distribution of selenium in surface waters of Tibet and environmental impact factors that determine its concentration

2022 ◽  
Vol 135 ◽  
pp. 108534
Author(s):  
Xinjie Zha ◽  
Yuan Tian ◽  
Chengqun Yu ◽  
Jianyu Xiao
2004 ◽  
Vol 49 (3) ◽  
pp. 125-134 ◽  
Author(s):  
R.H. Jongbloed ◽  
J.H.J. Hulskotte ◽  
C. Kempenaar

By means of a modelling tool an analysis was made of the local variation in the use of pesticides in the province of Utrecht in The Netherlands, and the potential environmental impact of pesticide emissions on the aquatic ecosystems. The aim of this study was to identify and quantify the major sources of pesticide use and environmental impact, taking the regional variation of pesticide use into account. The analysis was targeted at different levels: detailed (individual active substances, individual agricultural crops, civil land-use types, hydrological catchment basins) and globally covering agricultural use, non-agricultural use (some civil sectors) and recreational shipping. The results can be used for the (re)design of environmental monitoring programmes of pesticides in surface waters and for the development of region based policies towards sustainable pesticide use. The analysis tool that was developed is considered to be applicable for other regions as well.


Author(s):  
Mohamad Ali Sanjari Shahrezaei ◽  
Seyed Mohammad-Reza Taheri ◽  
Hesam Nikfazan ◽  
Alexandra Satalov ◽  
Mohsen Moazzami Gudarzi ◽  
...  

Though deemed to be of high importance for the determination of environmental impact of 2D materials upon their release into surface waters, control over the conformational engineering of atomically thin...


2011 ◽  
Vol 393-395 ◽  
pp. 1308-1312
Author(s):  
Chun Xu Wu ◽  
Hong Tao Zhang ◽  
Bei Hai Zhou ◽  
Lei Gao ◽  
Hao Deng ◽  
...  

A strain B1 belonging to Pseudomonas aeruginosa with high petroleum-degrading efficiency was isolated from Dagang oil-field wastewater treatment plant. More than 80% petroleum-degrading efficiency was obtained at 32°C, 200 r/min. According to the orthogonal test, the environmental impact factors influencing petroleum-degrading efficiency of the strain were investigated. The optimum environmental conditions for petroleum degradation were as follows: temperature was 40 °C, pH 8.0, oil inoculation 1 mL, nitrogen content 0.05 g. And the biodegradation efficiency of the strain reached 86.1%.


2013 ◽  
Vol 32 (2) ◽  
pp. 76-80 ◽  
Author(s):  
Yuanbiao Zhang ◽  
Yunlong Huo ◽  
Xiyao Liu ◽  
Weiming Kuang ◽  
Dongxing Yuan ◽  
...  

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