scholarly journals A Complex Soil Ecological Approach in a Sustainable Urban Environment: Soil Properties and Soil Biological Quality

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 704
Author(s):  
Adrienn Horváth ◽  
Péter Csáki ◽  
Renáta Szita ◽  
Péter Kalicz ◽  
Zoltán Gribovszki ◽  
...  
Keyword(s):  
Trace Metals ◽  
Urban Soils ◽  
Comparative Assessment ◽  
Ecological Approach ◽  
Taxa Richness ◽  
Biological Quality ◽  
Trace Metal Elements ◽  
Polluted Sites ◽  
Contamination Levels ◽  
Soil Microarthropod

The main purpose of the present study was to monitor actual contamination levels and execute a comparative assessment of results in a mid-sized Hungarian city for two different years. The first citywide soil investigations were completed in 2011. In 2018, the most prominent properties (pH, CaCO3, texture, and trace metals Cd, Co, Cu, Ni, Pb, and Zn) were reanalyzed and were supplemented with mesofauna on selected sites. The available trace metal elements of urban soils showed the following tendency in 2011: Zn > Cu > Pb > Cd > Cr = Ni = Co. In 2018, the previous order changed to Zn > Pb > Cu > Cr > Cd = Ni = Co. Cd and Pb enrichments were found, especially near the M7 motorway. The comparison between 2011 and 2018 revealed soil contamination was, on average, higher in 2011. Soil microarthropod communities were sampled and assessed using abundance data and diversity measurements. Soil biological quality was evaluated with the help of the Soil Biological Quality (QBS-ar) index. Acari and Collembola appeared to be the most abundant, ubiquitous taxa in the samples. Simultaneously, important groups like Symphyla, Protura, and Chilopoda were completely absent from the most polluted sites. For the most part, lower taxa richness, diversity, and QBS-ar index were observed with higher available Cu Zn, and Pb concentrations.

Comparative assessment of the effectiveness of three disinfection protocols for reducing bacterial contamination of stethoscopes

2019 ◽  
Vol 41 (1) ◽  
pp. 120-123
Author(s):  
Patricia Sebastian Marcos ◽  
Darren Hermes ◽  
Mellora Sharman
Keyword(s):  
Crossover Study ◽  
Bacterial Contamination ◽  
Isopropyl Alcohol ◽  
Comparative Assessment ◽  
Ultraviolet Germicidal Irradiation ◽  
Contamination Levels

AbstractIn a crossover study, 30 stethoscopes were assessed and disinfected using 3 protocols: isopropyl alcohol, a quaternary ammonia or biguanide disinfectant, and ultraviolet germicidal irradiation (UVGI). All protocols effectively reduced bacterial loads, but UVGI was less effective at higher contamination levels (P = .0004). The effectiveness of each intervention was short in duration.

A novel method for evaluating the potential release of trace metals associated with rainfall leaching/runoff from urban soils

2019 ◽  
Vol 664 ◽  
pp. 37-44 ◽  
Author(s):  
Bo Gao ◽  
Li Gao ◽  
Dongyu Xu ◽  
Min Zhang ◽  
Xiaodong Qu ◽  
...  
Keyword(s):  
Trace Metals ◽  
Urban Soils ◽  
Novel Method

scholarly journals Assessment of trace metal contamination in peri-urban soils in the region of Kenitra - Morocco

2019 ◽  
Vol 8 (2) ◽  
pp. 108
Author(s):  
Mohammed El Azzouzi ◽  
Yahya El Idrissi ◽  
Bouamar Baghdad ◽  
Soukaina El Hasini ◽  
Hamid Saufi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Spatial Distribution ◽  
Trace Metals ◽  
Metal Contamination ◽  
Urban Soils ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Alkaline Ph ◽  
Spectrometry Method ◽  
Trace Metal Contamination

<p>The spatial distribution of trace metals in peri-urban soils from Kenitra city (Morocco) was investigated. A total of 10 soil samples (0-20 cm depth) were collected from the studied area. The physicochemical properties including pH, electrical conductivity and texture were determined. Contents of 6 trace metals (Cd, Cr, Cu, Ni, Zn and Pb) were measured using Atomic Absorption Spectrometry method (AAS). <strong></strong></p><p>The results showed that soils of Kenitra city have a sandy texture with a predominance of alkaline pH. The analyzed soil samples can be considered as no salt due to low electrical conductivity values. The trace metals contents revealed that soils are uncontaminated.</p>

scholarly journals Evaluation of Trace Elemental Levels as Pollution Indicators in an Abandoned Gold Mine Dump in Ekurhuleni Area, South Africa

2021 ◽  
Author(s):  
Godwin Okereafor ◽  
Mamookho Makhatha ◽  
Lukhanyo Mekuto ◽  
Vuyo Mavumengwana
Keyword(s):  
South Africa ◽  
Trace Metals ◽  
Cation Exchange Capacity ◽  
Major Elements ◽  
Exchange Capacity ◽  
Pollution Indices ◽  
Trace Elemental ◽  
Contamination Levels ◽  
High Degree ◽  
Mine Dump

In the Blesbokspruit area of Ekuhurleni, South Africa, previous gold mining activities resulted in many tailings dump sites. 20 representative soil samples were used in describing the distribution of metals. The soils were very strongly acidic ranging from 3.86 to 4.34 with a low cation exchange capacity (CEC). Based on X-ray fluorescence (XRF) analysis, elemental composition of the soils revealed average values of major elements such as Na2O (0.18%), MgO (0.63%), Al2O3 (6.51%), SiO2 (81.83%), P2O5 (0.04%), SO3 (3.40%), K2O (1.98%), CaO (0.45%), TiO2 (0.51%), Cr2O3 (0.17%), MnO (0.04%), Fe2O3 (3.59%), NiO (0.04%), As2O3 (0.02%), with Rb2O and SrO falling below 0.01%. Trace metals (TM) contamination levels in the soils were evaluated using various pollution indices which revealed that over 60% of the soils were between the high degree and the ultra-high degree of contamination classes. The concentration of various trace metals varies from 860.3–862.6 mg/kg for Cr; 324.9–328.4 mg/kg for Al; 200.9–203.4 mg/kg for As; 130.1–136.2 mg/kg for Fe; 121.9–125.8 mg/kg for Pb; 27.3–30.2 mg/kg for Co; 23.8–26.8 mg/kg for Ni; 7.2–9.2 mg/kg for Ti; 7.1–9.2 mg/kg for Cd; 4.0–5.6 mg/kg for Zn and 0.1–0.6 mg/kg for Cu.

Background concentrations of trace metals As, Ba, Cd, Co, Cu, Ni, Pb, Se, and Zn in 214 Florida urban soils: Different cities and land uses

2020 ◽  
Vol 264 ◽  
pp. 114737 ◽  
Author(s):  
Evandro B. da Silva ◽  
Peng Gao ◽  
Min Xu ◽  
Dongxing Guan ◽  
Xianjin Tang ◽  
...  
Keyword(s):  
Trace Metals ◽  
Urban Soils ◽  
Land Uses ◽  
Background Concentrations

COMPARATIVE ASSESSMENT OF PHYSICAL AND CHEMICAL PARAMETERS, QUANTITATIVE COMPOSITION OF THE MAIN GROUPS OF MICROORGANISMS AND PHYTOTOXICITY OF CERTAIN TYPES OF SOILS IN SURGUT

2020 ◽  
Author(s):  
M. V. Mantrova ◽  
Keyword(s):  
Comparative Analysis ◽  
Urban Soils ◽  
Podzolic Soil ◽  
Comparative Assessment ◽  
Lead Content ◽  
Quantitative Composition ◽  
Chemical Parameters ◽  
Physical And Chemical Parameters ◽  
Number Of Microorganisms ◽  
Physical And Chemical

The article presents a comparative analysis of 4 urban soils-culturosem, 2 urbanozem and undisturbed podzolic soil (control) - by physical and chemical parameters, the quantitative composition of the main groups of microorganisms and phytotoxicity. Urban soils differ from the background and from each other in terms of acidity, saturation of bases, and lead content; they lead in the number of microorganisms and have a stimulating effect on radish seeds and seedlings.

scholarly journals Assessment of trace metal contamination in peri-urban soils in the region of Kenitra - Morocco

2019 ◽  
Vol 8 (2) ◽  
pp. 108-114
Author(s):  
Mohammed El Azzouzi ◽  
Yahya El Idrissi ◽  
Bouamar Baghdad ◽  
Soukaina El Hasini ◽  
Hamid Saufi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Spatial Distribution ◽  
Trace Metals ◽  
Metal Contamination ◽  
Urban Soils ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Alkaline Ph ◽  
Spectrometry Method ◽  
Trace Metal Contamination

The spatial distribution of trace metals in peri-urban soils from Kenitra city (Morocco) was investigated. A total of 10 soil samples (0-20 cm depth) were collected from the studied area. The physicochemical properties including pH, electrical conductivity and texture were determined. Contents of 6 trace metals (Cd, Cr, Cu, Ni, Zn and Pb) were measured using Atomic Absorption Spectrometry method (AAS). The results showed that soils of Kenitra city have a sandy texture with a predominance of alkaline pH. The analyzed soil samples can be considered as no salt due to low electrical conductivity values. The trace metals contents revealed that soils are uncontaminated.

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