Occurrence of heavy metals in sediment and their bioaccumulation in sentinel crab (Macrophthalmus depressus) from highly impacted coastal zone

Chemosphere ◽  
2019 ◽  
Vol 221 ◽  
pp. 89-98 ◽  
Author(s):  
Noor Us Saher ◽  
Asmat Saleem Siddiqui
Keyword(s):  
Heavy Metals ◽  
Coastal Zone

scholarly journals Chemical composition of leaves of a mangrove tree (Sonneratia apetala Buch.-Ham.) and their correlation with some soil variables

1970 ◽  
Vol 39 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Ashafaque Ahmed ◽  
Mikael Ohlson ◽  
Sirajul Hoque ◽  
Md Golam Moula
Keyword(s):  
Heavy Metals ◽  
Chemical Composition ◽  
Coastal Zone ◽  
Organic Matter Content ◽  
Matter Content ◽  
Sonneratia Apetala ◽  
Mangrove Tree ◽  
Soil Variables ◽  
Wide Range ◽  
High Concentrations

Chemical composition of leaves of Sonneratia apetala Buch.-Ham. collected from three islands (chars) representing three hydrological regimes in a segment of the coastal zone of Bangladesh was studied. Their relations to some soil chemical and physical variables have also been investigated. The results showed that concentrations of B, C, Fe, Ga, Li, Mg, Mn, N, Na, P, Zn and Sr in leaves of S. apetala grown in different islands differed significantly. It was also revealed that some heavy metals, viz. Mn, Fe, Al, Sr and Ti showed wide range of concentrations. The leaves from one of the locations in Motherbunia island were characterized by exceptional high concentrations of heavy metals such as Al, As, Cu, Fe, Li, Ni, Pb that may be due to local contamination. Leaves sampled in the most seaward locations of the same island had highest concentrations of Ba, Ca, Cu, Mn and Na. High Mn concentration was found in the leaves of S. apetala of Motherbunia island. Correlations among soil and plant samples were generally very weak and organic matter content of soil did not appear to play a significant role in the nutrient supply of S. apetala. Key words: Coastal zone; tidal inundation; elemental concentration; Sonneratia apetala DOI: 10.3329/bjb.v39i1.5528Bangladesh J. Bot. 39(1): 61-69, 2010 (June)

Transport and Water Quality Modelling in the Southern North Sea in Relation to Coastal Pollution Research and Control

1986 ◽  
Vol 18 (4-5) ◽  
pp. 245-256 ◽  
Author(s):  
J. A. van Pagee ◽  
H. Gerritsen ◽  
W P. M. de Ruijter
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Coastal Zone ◽  
North Sea ◽  
Water Levels ◽  
Coastal Pollution ◽  
The North ◽  
Pollution Research ◽  
The North Sea ◽  
And Control

Mathematical modelling techniques are used to quantify the transport in the southern part of the North Sea of pollutants originating from various inputs. Special attention was given to the anthropogenic increase in local concentrations of nutrients (N, P) and heavy metals (Cd, Hg, Cu, Pb, Zn, Cr) and their potential impact on marine organisms. A depth-averaged hydrodynamic model is used to calculate tidal and wind driven velocities and water levels. By averaging, residual flows are calculated, forming the basis for advective transports in a water quality model. Dispersive transports are derived from a comparison of simulated and observed salinity distributions. Water mass distributions and age functions for various inflowing water types are determined with the model. Transports of nutrients and heavy metals in the southern part of the North Sea are calculated using annual pollution inputs for 1980. Although interactions with bottom sediments are not considered, the calculated and measured concentrations show good similarities. The water quality in the Dutch coastal zone and German Bight area is shown to be highly determined by local pollution loads from the rivers Rhine, Weser and Elbe respectively. Comparison of simulated concentrations for 1980 with those resulting from simulations with estimated natural river inputs, shows that more than 50% of nutrients and heavy metal concentrations originate from human activities in large coastal zone areas. From toxicological information and standards, it is concluded that Cd, Hg and Cu are substances that need special attention in pollution research and control for the Dutch coastal waters.

scholarly journals American oyster (Crassostrea virginica) and sediments as a coastal zone pollution monitor by heavy metals

2012 ◽  
Vol 9 (4) ◽  
pp. 579-586 ◽  
Author(s):  
C. A. Aguilar ◽  
C. Montalvo ◽  
L. Rodríguez ◽  
J. G. Cerón ◽  
R. M. Cerón
Keyword(s):  
Heavy Metals ◽  
Crassostrea Virginica ◽  
Coastal Zone ◽  
American Oyster

scholarly journals Heavy metals in the bottom sediments of the coastal zone of the eastern part of the Gulf of Finland

2021 ◽  
Vol 265 ◽  
pp. 02015
Author(s):  
Valentina Kudryavtseva ◽  
Tatyana Shigaeva ◽  
Natalya Alekseeva
Keyword(s):  
Heavy Metals ◽  
Coastal Zone ◽  
Bottom Sediments ◽  
Gulf Of Finland ◽  
Northern Coast ◽  
Climatic Fluctuations ◽  
Massive Growth ◽  
Cadmium And Lead ◽  
The City ◽  
The Gulf Of Finland

For each summer from 2014 to 2019 the total concentrations of copper, zinc, cadmium, and lead in the surface layers of bottom sediments in the coastal zone of the eastern part of the Gulf of Finland were measured. The northern coast in the area of the city of Primorsk currently sees the rate of the pollution of surface-level bottom sediments with heavy metals decrease, although the concentration levels remain high. On the southern coast in the area of the city of Lomonosov the pollution of the bottom sediments is on the rise due to the ongoing construction of the Bronka seaport. In the Koporskaya and Grafskaya Bays a massive growth of macroalgae caused a further accumulation of metals in the bottom sediments, which are greatly impacted by climatic fluctuations.

Watershed-scale assessment of background concentrations and guidance values for heavy metals in soils from a semiarid and coastal zone of Brazil

2015 ◽  
Vol 187 (9) ◽  
Author(s):  
Yuri Jacques Agra Bezerra da Silva ◽  
Clístenes Williams Araújo do Nascimento ◽  
José Ramon Barros Cantalice ◽  
Ygor Jacques Agra Bezerra da Silva ◽  
Cinthia Maria Cordeiro Atanázio Cruz
Keyword(s):  
Heavy Metals ◽  
Coastal Zone ◽  
Watershed Scale ◽  
Background Concentrations ◽  
Scale Assessment ◽  
Heavy Metals In Soils

scholarly journals Role of Gravitational Processes in the Migration of Heavy Metals in Soils of the Priolkhonye Mountain-Steppe Landscapes, Lake Baikal: Methodology of Research

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2007
Author(s):  
Vadim A. Pellinen ◽  
Tatiana Yu. Cherkashina ◽  
Natalia N. Ukhova ◽  
Anastasia V. Komarova
Keyword(s):  
Heavy Metals ◽  
Coastal Zone ◽  
Test Site ◽  
Contamination Level ◽  
Agricultural Activity ◽  
Migration Path ◽  
Fine Grained ◽  
Geological Processes ◽  
Geochemical Indices ◽  
Gravitational Processes

The study object of this work is the soils of the Priolkhonye mountain-steppe landscapes. This research is performed at the Priolkhonye test site. Annual monitoring for exogenous geological process activity is conducted there. This research aims to study the influence of gravitational geological processes (landslides) on the migration of heavy metals, which are introduced into soil as a result of human agricultural activity. A methodology for the geoecological monitoring of soils based on an assessment of their contamination level by anthropogenic heavy metals, and a transfer mechanism throughout whole migration path (field–landslide–coast) is proposed. The following steps were taken to solve this problem: isolating a fine-grained fraction (<100 μm); determining the Hg, Cd, Pb, and Cu concentrations using wavelength dispersive X-ray fluorescence and atomic absorption spectroscopies, as well as total organic carbon (TOC) content using UV-Vis spectrophotometry; computing various geochemical indices; and describing the migration path of these heavy metals and TOC. The monitoring results showed that these pollutants migrate to the coastal zone as a result of landslides activation. The soil contamination level is increased which can cause negative toxic effects in coastal ecosystems, and could rise to a dangerous level for humans. Thus, the observed changes in the indices and TOC values allow us to assess the geoecological state of the study area; namely, the periods of landslide activity and the supply of these pollutants to the coastal zone.

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