Distribution patterns and source identification for heavy metals in Mirs Bay of Hong Kong in China

Ecotoxicology ◽  
2020 ◽  
Vol 29 (6) ◽  
pp. 762-770
Author(s):  
Mei-Lin Wu ◽  
Hao Cheng ◽  
Hui Zhao ◽  
Fu-Lin Sun ◽  
Yu-Tu Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Hong Kong ◽  
Source Identification ◽  
Distribution Patterns ◽  
Mirs Bay

scholarly journals Characteristics of nutrients pollution and ecological risk assessment of heavy metal in sediments of Fenhe River, Taiyuan Section, China

2021 ◽  
Author(s):  
Haotian Ma ◽  
Zhilei Zhen ◽  
Meixia Mi ◽  
Qian Wang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Source Identification ◽  
Anthropogenic Activities ◽  
Distribution Patterns ◽  
Middle Part ◽  
Ecological Risks ◽  
Natural Sources ◽  
Significant Contamination

Abstract This study was aim to reveal the characteristics of nutrients and heavy metals associated with ecological risks in the sediments of Fenhe River, Taiyuan Section. The concentrations of nutrients (TN, TP, TOM) and heavy metals (As, Cu, Zn, Pb, Cr, Ni, Hg, Cd) were investigated. Spatial distribution, correlation analysis and source identification were facilitated to indicate nutrients and heavy metal pollution's characteristics. Evaluations of heavy metals’ contamination degree were achieved by comprehensive ecological risk indexes including Igeo, Iin, Cf, PLI and RI. The results showed that nutrients were accumulated in the middle part and were mainly from embryophyte, zooplankton and phytoplankton or algae based on C/N values. Large spatial variabilities existed in heavy metals distribution patterns and source identification of heavy metals were natural sources and anthropogenic activities based on PCA model. Results of different ecological risk indexes showed that pollution associated with Hg was rated as moderate ecological risk which was the significant contamination, higher ecological risks mainly existed in the middle part.

HEAVY METALS IN WATER, SEDIMENTS AND MARINE FISHES FROM BULGARIAN BLACK SEA

2017 ◽  
Author(s):  
Katya Peycheva ◽  
Katya Peycheva ◽  
Mona Stancheva ◽  
Mona Stancheva ◽  
Stanislava Georgieva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Black Sea ◽  
Fish Species ◽  
Distribution Patterns ◽  
Marine Fishes ◽  
Marine Water ◽  
Mean Values ◽  
Sprattus Sprattus ◽  
Cu And Zn

In this study, the ecosystem marine water-sediment-biota was investigated and the pollution was assessed. The concentrations of eight elements were determined in marine water, sediments and four fish species collected from Black Sea (Varna), Bulgaria during 2013. Marine water recorded the highest concentrations of Zn (15-22 μg/L), As (1.1–1.2 μg/L) and Pb (0.7-0.8 μg/L) while Zn (31-52 μg/g), Pb (21-29 μg/g) and Cu (20-34 μg/g) and show the highest concentrations in sediments. Water and sediments showed similar spatial distribution patterns for the highest mean values of the different metals. In the analysed fish species, the highest concentration of the metals Cu and Zn were found in Trachurus Mediterrneus (0.42 mg/kg w.w) and in Sprattus Sprattus (12.7 mg/kg w.w), respectively while the heavy metals As and Hg were found with maximum values in Pseta Maxima (3.99 mg/kg w.w and 0.08 mg/kg w.w respectively). The results from this study were compared with our data for a previous period (2004-2006) and they show decrease in the levels of heavy metal.

scholarly journals Spatial assessment and source identification of heavy metals pollution in surface water using several chemometric techniques

2016 ◽  
Vol 106 (1-2) ◽  
pp. 292-300 ◽  
Author(s):  
Azimah Ismail ◽  
Mohd Ekhwan Toriman ◽  
Hafizan Juahir ◽  
Sharifuddin Md Zain ◽  
Nur Liyana Abdul Habir ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Source Identification ◽  
Spatial Assessment ◽  
Metals Pollution ◽  
Heavy Metals Pollution ◽  
Chemometric Techniques
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