scholarly journals Assessment of Sediment Contamination by Heavy Metals in the Water of Mgoua Catchment in the Industrial Zone of Douala (Cameroon)

2021 ◽  
Vol 9 (3) ◽  
pp. 58
Author(s):  
Josephine Ndjama ◽  
Raoul Gustave Nkoue Ndondo ◽  
Gloria Takem Eyong ◽  
Eric Belmond Biram Ngon ◽  
Alain Fouepe Takounjou ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sediment Contamination ◽  
Industrial Zone

PROBLEM OF HEAVY METAL SURFACE SEDIMENT CONTAMINATION IN THE EASTERN GULF OF FINLAND

2017 ◽  
Author(s):  
N Derugina ◽  
N Derugina ◽  
А Grigoriev ◽  
A Grigoriev ◽  
Дарья Рябчук ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Bottom Sediments ◽  
Late Holocene ◽  
Sediment Contamination ◽  
Gulf Of Finland ◽  
Slow Decline ◽  
Contamination Levels ◽  
The Gulf Of Finland ◽  
Neva Bay

This project defines the pre-industrial quantities of heavy metals in sediment sequences of the Late Holocene from the Eastern Gulf of Finland. A comparative analysis reveals differences and similarities in the current concentrations of heavy metals in bottom sediments and pre-industrial levels. It is found that the maximum concentrations of heavy metals in the bottom sediments of the Gulf of Finland and Neva Bay occurred in the period of 1950-1990. Since the 1990s, the trend has been a slow decline in the contamination levels; however, the concentrations of some heavy metals in bottom sediments remain high.

Assessment of Heavy Metals Content in the Proximity of a Contaminated Site From Cluj-Napoca (Romania)

2020 ◽  
Vol 65 (2) ◽  
pp. 17-37
Author(s):  
Georgiana Grosu ◽  
◽  
Carmen Andreea Roba ◽  
Ramona Bălc ◽  
Maria Lucia Bizău-Cârstea ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Statistical Analysis ◽  
Multivariate Statistical Analysis ◽  
Sediment Contamination ◽  
Contaminated Site ◽  
Pollution Indices ◽  
Chemical Parameters ◽  
Multivariate Statistical ◽  
Water And Sediment ◽  
Physico Chemical

The present study was conducted in the proximity of a contaminated site from Cluj-Napoca city (Cluj County, Romania), where metal processing activities have been carried out for decades. Metal content and physico-chemical parameters were analyzed in soil, water and sediment samples, while organic matter (OM) and total organic carbon (TOC) was additionally analyzed for the soil samples. The sources of heavy metals were evaluated based on multivariate statistical analysis, while the soil and sediment contamination degree was assessed based on specific pollution indices. The calculated indices indicated a significant pollution with Cd and Pb, which may represent a risk if the area would become a residential area. Keywords: heavy metals, contaminated site, soil pollution indices, multivariate statistical analysis, Cluj-Napoca

Assessment of heavy metals in sediments near Hazira industrial zone at Tapti River estuary, Surat, India

2012 ◽  
Vol 69 (7) ◽  
pp. 2365-2376 ◽  
Author(s):  
Bhavna A. Shah ◽  
Ajay V. Shah ◽  
Chirag B. Mistry ◽  
Alok J. Navik
Keyword(s):  
Heavy Metals ◽  
River Estuary ◽  
Industrial Zone

scholarly journals Seasonal Variation of Metallic Contamination of Water and Sediments in Navigation Canal and Industrial Zone South Port Said, Egypt

2018 ◽  
pp. 1-12
Author(s):  
Nabil, A. E. Azzaz ◽  
Mokhtar, S. Beheary ◽  
Mohamed, N. Raslan ◽  
Hazem T. Abd El Hamid
Keyword(s):  
Heavy Metals ◽  
Risk Index ◽  
Winter Season ◽  
Contamination Factor ◽  
Pollution Load Index ◽  
Industrial Zone ◽  
Sediment Samples ◽  
Accumulation Index ◽  
Port Said ◽  
Mean Concentration

In the present study, water and sediment samples were collected from Navigation Canal and from Industrial Zone South Port Said to assess heavy metals contamination. It was shown that, the highest mean concentration of heavy metals in water samples was observed in summer, and the lowest mean was observed in winter. It has been made evident that the industrialization in Industrial Zone South Port Said was responsible for the present deteriorating conditions. However, it was shown that, the highest mean concentration of heavy metals in sediment samples was observed in winter, and the lowest mean was observed in summer. Pollution status was evaluated using some indices: geo-accumulation index (Igeo), contamination factor (CF), pollution load index (PLI) and ecological risk index (RI). Based on Igeo, all metal values were unpolluted. On the basis of the values of CF, sediments are high in winter and low in summer. Metals concentrations were in the following order: Ni > Fe > Mn > Pb > Cu > Zn > Co > Cd. According to CF classification, Ni contamination was considerable. RI of winter season can be classified as moderate pollution. No pollution was classified for PLI in all seasons. The decrease in PLI and RI values were indicated dilution and dispersion of metal content with increasing distance from source areas. It is suggested that PLI can give an indication about the trend spatially and temporarily. In addition, it also provides significant data and advice to the policy and decision makers on the contamination degree of the area.

scholarly journals Environmental Assessment of an Abandoned Briquette Factory – A Case Study at Nagymányok Area, Former Industrial Zone

2016 ◽  
Vol 35 (1) ◽  
pp. 69-79
Author(s):  
Amade Halász ◽  
József Dezső ◽  
Viktoria Poor
Keyword(s):  
Heavy Metals ◽  
Boiler House ◽  
Industrial Area ◽  
Industrial Zone ◽  
Equal Distribution ◽  
Industrial Buildings ◽  
Polycyclic Aromatic ◽  
Multiple Samples ◽  
The City

Abstract The study is focused on environmental assessments of impacts by former briquette factory at the Nagymányok area in South Hungary. The (former) industrial zone is located in a northern valley of the Eastern Mecsek Mountains. Until the 1990s this company was the largest briquette factory in Hungary and the demolition works are still incomplete. former investigations were based on only five samples. our sampling sites were selected on the basis of the source of the contaminations and then we covered the whole area in equal distribution. We used the A1-F6 codes for the sample places. We have started from southwest to northeast. The samples were analyzed for Total Petrol Hydrocarbons (TPHs), Polycyclic Aromatic Hydrocarbons (PAHs) and for heavy metals. The area was heavily contaminated by TPHs and moderately heavy metals (such as Cu, Cr, Zn and Pb). Highest contaminant concentrations were found around the former industrial buildings, especially between the boiler-house and the coal-pillbox. In the industrial area the mean of the detected values is below the upper limit of the legal exposure values, but among the former industrial buildings higher (e.g. toxic level) concentration values were detected in multiple samples. Based on our investigation the pollutant can be transported by wind or by water on the surface (stream bed) or underground. The hazardous material can easily reach some part of the city, therefore reclamation is necesarry.

PM2.5 and Heavy Metals Outdoor Concentrations at a School Near to an Industrial Zone in Cali, Colombia

Epidemiology ◽  
2009 ◽  
Vol 20 ◽  
pp. S69-S70
Author(s):  
Nathalie Abrahams ◽  
Ana Lasso ◽  
Paola Filigrana ◽  
Juan Pablo Silva ◽  
Fabián Méndez
Keyword(s):  
Heavy Metals ◽  
Industrial Zone

PROBLEM OF HEAVY METAL SURFACE SEDIMENT CONTAMINATION IN THE EASTERN GULF OF FINLAND

2017 ◽  
Author(s):  
N Derugina ◽  
N Derugina ◽  
А Grigoriev ◽  
A Grigoriev ◽  
Дарья Рябчук ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Bottom Sediments ◽  
Late Holocene ◽  
Sediment Contamination ◽  
Gulf Of Finland ◽  
Slow Decline ◽  
Contamination Levels ◽  
The Gulf Of Finland ◽  
Neva Bay

This project defines the pre-industrial quantities of heavy metals in sediment sequences of the Late Holocene from the Eastern Gulf of Finland. A comparative analysis reveals differences and similarities in the current concentrations of heavy metals in bottom sediments and pre-industrial levels. It is found that the maximum concentrations of heavy metals in the bottom sediments of the Gulf of Finland and Neva Bay occurred in the period of 1950-1990. Since the 1990s, the trend has been a slow decline in the contamination levels; however, the concentrations of some heavy metals in bottom sediments remain high.

Contamination of Ground Water in Heavy Metals Concentration of Tabriz Industrial Zone

2006 ◽  
Vol 6 (8) ◽  
pp. 1652-1658 ◽  
Author(s):  
A. Baghvand ◽  
G.R. Nabi ◽  
N. Mehrdadi ◽  
S. Givehchi ◽  
M. Ardestani
Keyword(s):  
Heavy Metals ◽  
Ground Water ◽  
Industrial Zone
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