scholarly journals Determination of Some Heavy Metal Pollutants in Sediments of the Seybouse River in Annaba, Algeria

2012 ◽  
Vol 5 ◽  
pp. ASWR.S10081 ◽  
Author(s):  
Achour Louhi ◽  
Atika Hammadi ◽  
Mabrouka Achouri
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
River Sediment ◽  
Absorption Spectrometry ◽  
Aqua Regia ◽  
Metal Pollutants ◽  
Metal Processing ◽  
Heavy Metal Pollutants ◽  
Northeastern Algeria

This study was conducted in order to fight against pollution of the environment. The study concerns river sediment of the Seybouse River in northeastern Algeria. Northeastern Algeria is known for its various industries (steel, fertilizer, metal processing, etc), and the sediment deposited by the Seybouse River, is probably polluted by heavy metals. For this study, we used two protocols of digestion of sediments, the first, using a mixture of hydrofluoric acid and perchloric acid, and the second, using aqua regia. The comparison of these two protocols will help us to find the best solubilization and thus facilitate the extraction and determination of heavy metals in sediment. Before determining the concentration of some heavy metals (Fe, Zn, Mn, Sn, Ni, Cr, Pb and Cu), we first analyzed parameters of sediments such as pH and organic matter. We used atomic absorption spectrometry (AAS) to measure these heavy metals. The functional groups characteristic of organic matter and particularly clays were identified by infrared spectroscopy. The average concentrations of metals exceeded acceptable standards for sediment pollution with heavy metals. Maximum concentrations in mg/kg respectively of the elements studied (Fe, Zn, Mn, Sn, Ni, Cr, Pb and Cu) were, respectively, 2460.20 ± 74.8; 1140.65 ± 38.2; 3.60 ± 1.2; 1.20 ± 0.5; 16.80 ± 2.6; 9.50 ± 3.2; 476.31 ± 21.6 and 145.15 ± 35.2. These results clearly show that the sediments deposited by the Seybouse River are heavily polluted.

scholarly journals Distribution and contamination assessment of heavy metals in soils and sediments from the Fildes Peninsula and Ardley Island in King George Island, Antarctica

2021 ◽  
Vol 40 ◽  
Author(s):  
Jing Lin ◽  
A.B.M. Sadique Rayhan ◽  
Yun Wang ◽  
Zhai Wu ◽  
Yan Lin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Principal Component ◽  
Absorption Spectrometry ◽  
Pollution Load Index ◽  
Contamination Assessment ◽  
Fildes Peninsula ◽  
Metal Pollutants ◽  
Soils And Sediments ◽  
Accumulation Index ◽  
Heavy Metal Pollutants

Concentrations of heavy metals (Cu, Pb, Zn, Cd and Cr) in surface soils and sediments collected in 2008 from 37 sampling sites in the Fildes Peninsula and Ardley Island were detected by atomic absorption spectrometry. The total contents of Cu, Pb, Zn, Cd and Cr ranged, respectively, from 61.36 to 562.2 mg/kg, 0.52 to 1.95 mg/kg, 54.61 to 577.9 mg/kg, 0.04 to 3.76 mg/kg and 6.83 to 25.9 mg/kg in soils and from 58.55 to 498.3 mg/kg, 0.60 to 2.51 mg/kg, 56.22 to 345.9 mg/kg, 0.07 to 5.77 mg/kg and 7.76 to 39.5 mg/kg in sediments. The geo-accumulation index and the pollution load index were calculated to evaluate the environmental effects of heavy metal pollutants, Cu, Zn and Cd, in the study area. Soils and sediments from Ardley Island were found to be moderately polluted with the studied metals. Pearson’s correlation analysis and principal component analysis were applied to assess the distribution pattern and potential source of heavy metals. The results suggest that Cu, Zn and Cd in the study area originated from both the lithogenic sources and penguin guano, while Pb and Cr were probably derived from lithogenic sources.

scholarly journals PRELIMINARY ASSESSMENT OF Cd, Cr, Ni, Pb AND Zn LEVELS IN MANGROVE SEDIMENTS OF SACO DO MAMANGUÁ (ILHA GRANDE BAY, RJ)

2013 ◽  
Vol 12 (24) ◽  
pp. 8-14
Author(s):  
Alexandre Andrade CERQUEIRA ◽  
Monica Regina da Costa MARQUES ◽  
Paulo Sérgio Alves SOUZA ◽  
Mario Luiz Gomes SOARES ◽  
Daniel Vidal PEREZ
Keyword(s):  
Heavy Metals ◽  
Sediment Quality ◽  
Chemical Characterization ◽  
Absorption Spectrometry ◽  
Mangrove Sediments ◽  
Aqua Regia ◽  
Physico Chemical ◽  
Environmental Agencies ◽  
Janeiro State

Saco do Mamanguá” is located in Ilha Grande Bay, west coast Rio de Janeiro State and suffers intense pressure degradation, mainly by speculation to build "resorts". The region is extremely vulnerable, given that there are in the region of Ilha Grande bay potentially polluting enterprises, such as mangroves. Samples of surface sediments were collected in “Saco do Mamanguá”. In this region, samples were collected at five sampling points parallel to the shoreline at a distance of approximately 10 m between them. Subsequently dried, sieved and analyzed for physico-chemical characterization and determination of heavy metals: Cd, Cr, Ni, Pb and Zn after digestion with aqua regia assisted by microwave radiation. The metal concentrations were determined by atomic absorption spectrometry with flame. The results showed that the sediments in “Saco do Mamanguá” mangrove presents average levels of Cd, Ni and Pb above the established as criteria for sediment quality by environmental agencies from Canadia and United States of America, demonstrating its vulnerability to contaminants of heavy metals existing in the Bay of Ilha Grande.

ASSESSMENT OF CONCENTRATION STATUS OF SOME HEAVY METALS IN WATER ALONG RIVER DILIMI, JOS NORTH, PLATEAU STATE-NIGERIA

2020 ◽  
Vol 4 (1) ◽  
pp. 29
Author(s):  
Ezekiel Oiganji ◽  
K. I. Dikam
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Crop Productivity ◽  
Aquatic Life ◽  
Aqua Regia ◽  
Inland Water ◽  
Metal Pollutants ◽  
Plateau State ◽  
Inland Water Bodies ◽  
Heavy Metal Pollutants

<p>Aim: This study was carried out to assess concentration status of some<br />heavy metals in water along River Dilimi, Nigeria. The Nigerian inland water<br />bodies have been subjected to various forms of degradation due to<br />pollution. River Dilimi in Jos North of Plateau state capital is one of such<br />endangered inland water bodies. Activities around and in the river has led<br />to discharge of various heavy metal pollutants into the aquatic<br />environment rendering water unsuitable for its intended purposes.<br />Methodology and Results: Six (6) water samples were collected at the<br />upper, centre and lower section of the river at the 20 and 120 cm depth, <br />for every six (6) weeks making a total of eighteen (18) samples, Analyzed at<br />Nigerian Institute of Mining and Geosciences, Jos. The water samples<br />collected were pre-treated with few drops of concentrated Nitric acid, and<br />digested with Aqua-regia in the ratio of 3:1 for an hour. Different standard<br />solutions were prepared for AAS analysis under Beer-Lambert method of<br />metal analysis using Atomic Absorption Spectrophotometer (AAS). The<br />data obtained were subjected statistical analysis. The results obtained from<br />analyzed water samples were alarming, iron, lead, cadmium and<br />Manganese were above the recommended threshold by 277, 6,400, 1,233<br />and 580% accordingly, while zinc and copper were within permissible limit.<br />Conclusion, significance and impact study: River Dilimi can be said to be<br />highly concentrated with hazardous metals of concern like Fe, Pb, Cd and<br />Mn. This as a result of bioaccumulation will affect human and animal<br />health, aquatic life and crop productivity.</p>

scholarly journals The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp)

2020 ◽  
Vol 21 (2) ◽  
pp. 98-109
Author(s):  
Witriani Marvinatur Ihsan ◽  
Ratnawulan Ratnawulan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Maximum Intensity ◽  
Coastal Forest ◽  
Metal Pollutants ◽  
Heavy Metal Concentrations ◽  
Measurement Results ◽  
West Sumatra ◽  
Heavy Metal Pollutants

In the South Coastal Forest area, West Sumatra, a luminous mushroom with the species Neonothopanus Sp. This research was conducted with the aim of seeing the effect of heavy metals on the bioluminescence reaction of luminous mushrooms. Starting from the effect of heavy metal concentrations on the intensity and inhibition coefficient of luminous mushroom biolumination. From the measurement results, the maximum intensity value of luminous mushrooms is 499.6 au occurring at a wavelength of 505 nm. At a wavelength of 505 nm, visible light is produced in green. The results obtained are in accordance with observations, because the light emitted by the glowing mushroom is green. If the concentration of heavy metals is greater, the intensity of the bioluminescent fungus (Neonothopanus sp) will decrease. The type of heavy metal affects the intensity of the fungus biolumination. The greatest decrease in intensity occurred in copper (Cu) and iron (Fe), zinc (Zn) and lead (Pb). If the heavy metal concentration is greater, the inhibition coefficient will be smaller. The greatest inhibition coefficient due to the presence of heavy metals occurs in copper (Cu) then iron (Fe), zinc (Zn) and the smallest is lead (Pb).

A Fuzzy Cluster Algorithm of Heavy Metal City Topsoil Pollution

2013 ◽  
Vol 830 ◽  
pp. 341-344
Author(s):  
Jun Jun Du ◽  
Sheng Ping Jin ◽  
Qiong Li ◽  
She Sheng Zhang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fuzzy Clustering ◽  
Clustering Algorithm ◽  
Fuzzy Ahp ◽  
Science Research ◽  
Fuzzy Cluster ◽  
Metal Pollutants ◽  
Fuzzy Cluster Algorithm ◽  
Heavy Metal Pollutants

Consider heavy metal pollution of topsoil in the city of world today is a hot science research project. A fuzzy clustering algorithm l is constructed ed by analyzing the propagation characteristics of heavy metal pollutants. Considering topography, areas, factories, roads, , irredentist, etc. we calculate a evaluation on comprehensive pollution, and the degree of heavy metals pollution, by using fuzzy clustering and fuzzy AHP. The results show that the index of the comprehensive pollution of heavy metals on the region, and the weight of pollution of each category.

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