Map of southeastern Maine showing heavy metals in stream sediments

10.3133/mf301 ◽  
1967 ◽  
Keyword(s):  
Heavy Metals ◽  
Stream Sediments

scholarly journals Geochemistry, risk assessment, and Pb isotopic evidence for sources of heavy metals in stream sediments around the Ulukışla Basin, Niğde, southern Turkey

2020 ◽  
Vol 29 (7) ◽  
pp. 1167-1188 ◽  
Author(s):  
Abdurrahman LERMİ ◽  
Emmanuel Daanoba SUNKARI
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Anthropogenic Activities ◽  
Pollution Assessment ◽  
Potential Ecological Risk ◽  
Stream Sediments ◽  
Multivariate Statistical ◽  
Isotopic Tracing ◽  
South Central ◽  
Probable Effect

Concentrations of selected elements (Al, Fe, Mn, Mo, As, Cd, Cu, Cr, Ni, Co, Pb, Sb, and Zn) and Pb isotope ratios were determined in 53 sediments from Alihoca, Gümüş, Horoz, and Çakıt streams around the south-central Taurides (Ulukışla Basin), Niğde, which is a known mining province in Turkey. Several pollution and risk assessment indices were used to assess possible heavy metal pollution in the stream sediments and the associated potential ecological risks. Concentrations of As, Cd, Cu, Cr, Ni, Co, Pb, Sb, and Zn were elevated in the streams located near ancient mines, active mines, and slag piles in the area, suggesting an influence from mining activities. The pollution assessment indices indicated that the sediments were significantly polluted by As, Cd, Sb, Zn, and Pb and moderately polluted by Cu, Ni, Cr, and Co. The sediments show very high potential ecological risk with As, Cd, Sb, and Pb as the principal contributors. Ni, Cr, As, Pb, Zn, and Cd exceeded the probable effect concentrations in most of the samples implying that their concentrations may frequently affect sediment-dwelling organisms. Multivariate statistical analyses indicate that the accumulation of heavy metals in the stream sediments is due to an interplay of anthropogenic activities (mining and agrochemical application) and geogenic processes (weathering of bedrocks and supergene alteration of base metal-rich mineralization). Pb isotopic tracing indicates that total Pb in the sediments (206Pb/207Pb = 1.09–1.29) is primarily from weathering and dissolution of ultrapotassic rocks (206Pb/207Pb up to 1.20) and galena (206Pb/207Pb up to 1.21) from the Pb-Zn-Au deposits in the area with some anthropogenic input from mine slag piles (206Pb/207Pb = 1.10).

Geochemical Distribution of Selected Heavy Metals in Stream Sediments Affected by Tannery Activities

2006 ◽  
Vol 169 (1-4) ◽  
pp. 167-184 ◽  
Author(s):  
Maria Lucia Kolowski Rodrigues ◽  
Milton Luiz Laquintinie Formoso
Keyword(s):  
Heavy Metals ◽  
Stream Sediments

scholarly journals HEAVY METALS IN STREAM SEDIMENTS AFFECTED BY A LANDFILL AND ASSOCIATED IMPACT ON GROUNDWATER QUALITY

2017 ◽  
Vol 43 (5) ◽  
pp. 2635 ◽  
Author(s):  
E. Koutsopoulou ◽  
P. Tsolis-Katagas ◽  
D. Papoulis
Keyword(s):  
Heavy Metals ◽  
Environmental Impact ◽  
Groundwater Quality ◽  
Stream Sediments ◽  
Soil Samples ◽  
Solid Wastes ◽  
Sanitary Landfill ◽  
Chemical Analyses ◽  
Municipal Solid Wastes ◽  
Run Off

Sanitary landfill facilities are essential to modern societies as repositories for municipal solid wastes. However, they always entrain a certain risk of environmental impact. For this reason monitoring is essential to their operation. In the present work, the environmental impact of such a landfill is studied. Soil samples were collected in and around the landfill and their mineralogy was studied. Top layers of stream sediments were collected to examine possible dispersion of pollutants in the environment. Chemical analyses showed enrichment in As, Cu, Zn, and Pb in the stream sediments compared to uncontaminated samples. The presence of anions such as chloride, sulphate and phosphate adsorbed on clay minerals suggest the interaction of stream sediments with run-off water from the landfill. The groundwater near the landfill site was characterised as not potable and not suitable for irrigation purposes, because some parameters such as NO3 - and Cl- were close or exceeded the permissible limits given by EE, EPA and WHO.

scholarly journals Grain Size and Source Apportionment of Heavy Metals in Urban Stream Sediments

10.5772/29309 ◽  
2012 ◽  
Author(s):  
K. Sekabira ◽  
H. Oryem-Origa ◽  
T. A. ◽  
G. Mutumba ◽  
E. Kakudidi
Keyword(s):  
Heavy Metals ◽  
Grain Size ◽  
Source Apportionment ◽  
Stream Sediments ◽  
Urban Stream
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