Environmental factors controlling the spatial distribution of subfossil Chironomidae in surface sediments of Lake Dongping, a warm temperate lake in North China

2017 ◽  
Vol 76 (15) ◽  
Author(s):  
Liwei Yang ◽  
Shiyue Chen ◽  
Ju Zhang ◽  
Shiyong Yu ◽  
Huanguang Deng
Keyword(s):  
Spatial Distribution ◽  
Environmental Factors ◽  
North China ◽  
Surface Sediments ◽  
Temperate Lake ◽  
Warm Temperate

Assessment of Seldom Monitored Trace Elements Contamination in Surface Sediments of Bohai Bay, North China

2013 ◽  
Vol 726-731 ◽  
pp. 1233-1238
Author(s):  
Jin Lu ◽  
Bo Gao ◽  
Qiang Li ◽  
Huai Dong Zhou ◽  
Shu Hua Yin
Keyword(s):  
Trace Elements ◽  
Spatial Distribution ◽  
North China ◽  
Surface Sediments ◽  
Geoaccumulation Index ◽  
The Other ◽  
Pollution Level ◽  
Bohai Bay ◽  
Anthropogenic Inputs ◽  
Geochemical Study

A geochemical study of was carried out to analyze the concentrations, distribution and accumulation of the SMTEs (Seldom Monitored Trace Elements) in sediments of Bohai Bay, North China. The results showed that the average concentrations of V, Co, Mo, Sb, Tl and Mn were 98.26, 15.07, 0.75, 2.06, 0.64 and 678.80 mg/kg, respectively. SMTEs concentrations and their spatial distribution indicated that the SMTEs were due to anthropogenic inputs except for Mo. The assessment of Geoaccumulation Index showed that Sb was at the level of unpolluted to moderately polluted, and the other SMTEs were at the unpolluted level. The order of the pollution level of the SMTEs was: Sb > Tl > V Co > Mn > Mo.

scholarly journals Spatial Distribution and Ecological Risk Assessment of Potentially Harmful Trace Elements in Surface Sediments from Lake Dali, North China

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2544 ◽  
Author(s):  
Min Xu ◽  
Weiwei Sun ◽  
Rong Wang
Keyword(s):  
Spatial Distribution ◽  
Ecological Risk ◽  
North China ◽  
Surface Sediments ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Multivariate Statistical ◽  
Ecological Risk Index ◽  
Agricultural Use ◽  
Contamination Levels

Potentially harmful trace element (PHTE) pollution in lakes has important implications for regional management in North China, yet is seldom investigated. Surface sediments from 13 sites in Lake Dali were collected for PHTE analysis. Combined with the enrichment factor, potential ecological risk index, and multivariate statistical analysis, the spatial distribution and ecological risk of the pollutants were studied. The results showed that the contamination levels of As, Cd, Cr, Cu, Ni, Pb, and Zn were minor to moderate. Cd, Cr, Cu, Ni, Zn, and part of Pb pollution were mainly attributed to atmospheric deposition with the development of industry in North China, and As pollution resulted from the agricultural use of chemical fertilizers and As-containing pesticides. For the overall lake, the southwest part requires the most management, and targeted measures should be tailored to mitigate the ecological risk of PHTE pollution.

Spatial distribution and source apportionment of PAHs in marine surface sediments of Prydz Bay, East Antarctica

2016 ◽  
Vol 219 ◽  
pp. 528-536 ◽  
Author(s):  
Rui Xue ◽  
Ling Chen ◽  
Zhibo Lu ◽  
Juan Wang ◽  
Haizhen Yang ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Source Apportionment ◽  
Surface Sediments ◽  
East Antarctica ◽  
Prydz Bay ◽  
Marine Surface
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