ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX

2017 ◽  
Vol 16 (7) ◽  
pp. 1623-1630
Author(s):  
Maria-Alexandra Hoaghia ◽  
Erika-Andrea Levei ◽  
Oana Cadar ◽  
Marin Senila ◽  
Gheorghe-Gavrila Hognogi
Keyword(s):  
Ecological Risk ◽  
Metal Contamination ◽  
Urban Soils

A brief Survey of Assessment models to Predict stress Level of Heavy Metals in Soils

2020 ◽  
Vol 13 ◽  
Author(s):  
Sangeetha Annam ◽  
Anshu Singla
Keyword(s):  
Economic Growth ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Stress Level ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Human Life ◽  
High Stress ◽  
Heavy Metal Stress

Abstract: Soil is a major and important natural resource, which not only supports human life but also furnish commodities for ecological and economic growth. Ecological risk has posed a serious threat to the ecosystem by the degradation of soil. The high-stress level of heavy metals like chromium, copper, cadmium, etc. produce ecological risks which include: decrease in the fertility of the soil; reduction in crop yield & degradation of metabolism of living beings, and hence ecological health. The ecological risk associated, demands the assessment of heavy metal stress levels in soils. As the rate of stress level of heavy metals is exponentially increasing in recent times, it is apparent to assess or predict heavy metal contamination in soil. The assessment will help the concerned authorities to take corrective as well as preventive measures to enhance the ecological and hence economic growth. This study reviews the efficient assessment models to predict soil heavy metal contamination.

Metal contamination of urban soils in Cork, Ireland

2021 ◽  
Author(s):  
Hannah Binner ◽  
Timothy Sullivan ◽  
Maria E. Mc Namara
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Metal Contamination ◽  
Urban Soils ◽  
Soil Samples ◽  
Ex Situ ◽  
City Centre ◽  
Metal Concentrations ◽  
Ph Values ◽  
Background Levels

<p>Soil contamination is widespread across Europe. In particular, contamination of urban soils by metals is poorly characterised. This is a major environmental concern, especially given that urban recreational amenities may be located on former industrial sites and/or may possess ex situ soils derived from industrial areas. We surveyed soils from nine urban recreational sites (15 samples per site) in Cork city in order to assess the degree of metal contamination. The results show that Pb concentrations exceed national background levels in all soil samples from all sites by a mean of 600 % and at least 140 %. Mn, Fe and Zn are enriched above background levels in all soil samples from three (Mn and Fe) to five (Zn) of the sites and, at the remaining sites, show 7 – 14 localised hotspots. Similar hotspots characterise Cu, Rb and Sr, which each exceed background levels at eight or more sampling locations at four sites. Co, Ni, As and Sn concentrations exceed background levels in at least three hotspots at each of three to six sites. Overall, metal concentrations are highest in the sites closest to the city centre, reflecting diverse sources that potentially include traffic and current and historical domestic coal burning and industry. At each urban site, the element grouping Zn and Pb recurs in 50 to 80 % of locations and enrichment in the element grouping Mn, Fe, Cu, Zn and Pb recurs in approx. 50 % of locations; Ni and As recur in approx. 10 % of the locations. At three sites, elevated concentrations of Mn, Fe, Cu, Zn and Pb are associated with high LOI (Loss-on-ignition) values – a proxy for the amount of soil organic matter present – and near-neutral pH values. Conversely, low LOI and acidic pH values are associated with lower concentrations of these elements. This indicates that soil metal concentrations are influenced by the amount of organic matter present and by pH.  Future analyses and experiments will further investigate links between soil organic matter and metal concentrations.</p>

Heavy metal contamination of urban soils and dusts in Guangzhou, South China

2012 ◽  
Vol 185 (2) ◽  
pp. 1095-1106 ◽  
Author(s):  
Quan-Ying Cai ◽  
Ce-Hui Mo ◽  
Hai-Qin Li ◽  
Huixiong Lü ◽  
Qiao-Yun Zeng ◽  
...  
Keyword(s):  
Heavy Metal ◽  
South China ◽  
Metal Contamination ◽  
Urban Soils ◽  
Heavy Metal Contamination
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