Selective leaching of trace heavy metals associated with suspended matter in fresh waters

1984 ◽  
Vol 84 (1-2) ◽  
pp. 69-77 ◽  
Author(s):  
Sujith Tillekeratne ◽  
Masataka Hiraide ◽  
Atsushi Mizuike
Keyword(s):  
Heavy Metals ◽  
Suspended Matter ◽  
Selective Leaching ◽  
Fresh Waters ◽  
Trace Heavy Metals

Methodology of Research in Micropollutants – Heavy Metals

1982 ◽  
Vol 14 (12) ◽  
pp. 107-125 ◽  
Author(s):  
Roland Wollast
Keyword(s):  
Heavy Metals ◽  
Mathematical Models ◽  
Aqueous Phase ◽  
Suspended Matter ◽  
Solid Phase ◽  
Aquatic Organisms ◽  
Biological Processes ◽  
Particulate Phase ◽  
Sources Of Pollution ◽  
Adsorption Desorption

A comparison of the concentration of dissolved and of particulate heavy metals in the aquatic system indicates that these elements are strongly enriched in the suspended matter. The transfer between the aqueous phase and the solid phase may be due to dissolution-precipitation reactions, adsorption-desorption processes or biological processes. When these processes are identified, it is further possible to develop mathematical models which describe the behaviour of these elements. The enrichment of heavy metals in the particulate phase suspended or deposited and in aquatic organisms constitutes a powerful tool in order to evaluate sources of pollution.

Trace heavy metals in various Yugoslav tobaccos

1978 ◽  
Vol 69 (3-4) ◽  
pp. 261-270 ◽  
Author(s):  
M. Dermelj ◽  
V. Ravnik ◽  
A. R. Byrne ◽  
A. Vakselj
Keyword(s):  
Heavy Metals ◽  
Trace Heavy Metals

scholarly journals Road Construction and Trace Heavy Metals in Roadside Soils along a Major Traffic Corridor in an Expanding Metropolis

2019 ◽  
pp. 1-10
Author(s):  
V. O. Wekpe ◽  
G. O. Chukwu-Okeah ◽  
Godspower Kinikanwo
Keyword(s):  
Heavy Metals ◽  
Public Transportation ◽  
Road Construction ◽  
Heavy Metal Concentration ◽  
Motor Vehicles ◽  
Experimental Sample ◽  
Roadside Soils ◽  
The Road ◽  
Trace Heavy Metals ◽  
Run Off

City growth often time results in advancement and development in transportation which comes with its attendant changes in road infrastructure and transport support services such as road side mechanic workshops, vulcanizers and bus stops. A byproduct of these attendant contiguous activities and processes is the emission and release of trace heavy metals. Trace heavy metals have been identified as major carcinogens. This study aimed at determining the occurrence and concentration of heavy metals in roadside soils in an expanding third world metropolis. To achieve the aim of the research, the total length of the road within the study section was measured. Ten sample locations were indentified at about 2.5km intervals along the road section under review. The heavy metal concentration was determined the using Buck Scientific 210 VGP Atomic Absorption Spectrophotometer. Heavy metals such as Iron (Fe), Copper (Cu), Cadmium (Cd), Lead (Pb) and Mercury (Hg) were determined. The result of the analysis showed that the concentration values ranged from <0.001 to 48.90 µg/mg. The results also revealed that the experimental sample points recorded higher values than the control samples; however, some of the control points had relatively higher concentration values. This observation may have emanated from the low lying trajectory and topography of the surrounding area, which allows run-off from the road side soils to wash off heavy metals and deposit them at these lower lying areas. The sources of these trace heavy metals are attributed to emissions from motor vehicles that ply the road on a day to day basis. Emanating from the findings, this study recommends that improved public transportation and cleaner sources of energy is recommended.

Removal of trace heavy metals by metal chelates

1990 ◽  
Vol 36 (3) ◽  
pp. 191-198 ◽  
Author(s):  
S. A. Wasay ◽  
B. K. Puri ◽  
I. Haq
Keyword(s):  
Heavy Metals ◽  
Metal Chelates ◽  
Trace Heavy Metals

Review: Electrochemical Stripping Analysis of Trace Heavy Metals Using Screen-Printed Electrodes

2013 ◽  
Vol 46 (16) ◽  
pp. 2479-2502 ◽  
Author(s):  
Xiangheng Niu ◽  
Minbo Lan ◽  
Hongli Zhao ◽  
Chen Chen ◽  
Yuxiu Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Stripping Analysis ◽  
Trace Heavy Metals ◽  
Screen Printed Electrodes ◽  
Electrochemical Stripping ◽  
Screen Printed
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