scholarly journals Distribution, Sources, and Association of Polycyclic Aromatic Hydrocarbons, Black Carbon, and Total Organic Carbon in Size-Segregated Soil Samples Along a Background–Urban–Rural Transect

2012 ◽  
Vol 29 (11) ◽  
pp. 1008-1019 ◽  
Author(s):  
Sharmila Ray ◽  
Pandit Sudan Khillare ◽  
Ki-Hyun Kim ◽  
Richard J.C. Brown
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Black Carbon ◽  
Aromatic Hydrocarbons ◽  
Soil Samples ◽  
Polycyclic Aromatic ◽  
Urban Rural

scholarly journals Effects of soil pH, Total Organic Carbon and texture on fate of Polycyclic Aromatic Hydrocarbons (PAHs) in soils

2018 ◽  
Vol 20 (2) ◽  
pp. 181-187 ◽  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Aromatic Hydrocarbons ◽  
Catalytic Degradation ◽  
Rank Test ◽  
High Concentration ◽  
Animal Diversity ◽  
Significant Difference ◽  
Polycyclic Aromatic

Polycyclic aromatic hydrocarbons (PAHs) are a group of quotidian organic compounds having between two and six condensed aromatic rings braced in angular, cluster or linear forms possessing hydrogen and carbon atoms only. This work aims to evaluate the physicochemical characteristics of soil as determinants of PAHs distribution and fate. The study area is situated on the Benin River beneath the convergence of Jamieson River and River Ethiope. The weather and climatic conditions of the area are of the Niger Delta region. Sixteen priority PAHs were determined in ten sample stations. Upon extraction, purification and quantification of PAHs was done using GC-FID. According to the methods of Walkey-Blacks, Black and Bouyoucus, soil total organic carbon, pH and texture were analyzed respectively. Four replicate samples were chosen to create a composite and used as quality control. Kruskal-Wallis test with tied rank was used to determine a causative correlation between soil physicochemical parameters and ∑PAHs. Results showed that the study area is contaminated with high concentration of PAHs ranging from 60.76 – 271.11 239 µg.g-1 with higher percentages of HPAHs i.e. PAHs with LogKow > 4.0. It is observed that observed alkaline pH favour significant fungal, asperigellus and microbial degradation of PAHs, and hinder photo-catalytic degradation. However, acidification with elemental sulfur, ferrous sulfate and aluminum sulfate could enhance photo-catalytic degradation. Results of TOC and soil structure do not favour significant degradation of HPAHs. Kruskal-Wallis tied rank test revealed that there was a positive significant difference between pH, TOC, percentage clay, and silt fractions with ∑PAHs concentrations since calculated K is greater than critical K0.05, P<0.05 except percentage of sand fractions and ∑PAHs with P>0.05. A substantial percentage of these PAHs have no anthropic origin and are characterized as having high lipo-affinity, semi-volatility and resistance to biotic and/or abiotic transformations. Due to edaphic factors the observed HPAHs may partially degrade with the consequent formation of highly toxic by-products. Therefore, oral or dermal ingestion of soil in the study area may cause significant exposure of the human population to these PAHs. Risk assessment and probable toxicity effects on animal diversity should be carried out in soil samples of the study area.

scholarly journals Monitoring of the groundwater environment within a landfill site

2007 ◽  
Vol 38 (1) ◽  
pp. 49-56
Author(s):  
Hanna Złotoszewska-Niedziałek
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Soil Water ◽  
Aromatic Hydrocarbons ◽  
Water Environment ◽  
Landfill Site ◽  
Groundwater Environment ◽  
Polycyclic Aromatic ◽  
Surrounding Soil

Monitoring of the groundwater environment within a landfill site The paper presents the hydrogeological conditions and results of monitoring carried out within the "Otwock-Świerk" municipal landfill site. The object is located within the Garwolin Plain - a denuded moraine plateau composed of deposits representing Middle-Polish Glaciations. Wastes are isolated from the surrounding soil-water environment by a 1-ply complex mineral-synthetic diaphragm. The periodical increase of chlorides, total organic carbon (TOC), polycyclic aromatic hydrocarbons (PAH) and nitrites indicate the presence of pollutants of anthropogenic origin.

scholarly journals Soil texture as a key driver of polycyclic aromatic hydrocarbons (PAHs) distribution in forest topsoils

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Stanisław Łyszczarz ◽  
Jarosław Lasota ◽  
Maria Magdalena Szuszkiewicz ◽  
Ewa Błońska
Keyword(s):  
Heavy Metals ◽  
Magnetic Susceptibility ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Carbon ◽  
Enzymatic Activity ◽  
Forest Soils ◽  
Aromatic Hydrocarbons ◽  
Soil Texture ◽  
Soil Samples ◽  
Polycyclic Aromatic

AbstractDue to the dynamic development of civilization and the increasing demand for energy, pollution by harmful chemicals, including polycyclic aromatic hydrocarbons (PAHs) compounds, is a serious threat to forest soils. The aim of the study was to determine the role of texture in the distribution of polycyclic aromatic hydrocarbons (PAHs) and trace elements in forest soils. The areas with different texture ranging from sand through sandy loam to silt loam were selected for the study. The study was carried out in the Chrzanów Forest District in southern Poland (50° 7′ 18 N; 19° 31′ 29 E), which in one of the most intensive industrial emission zones in Europe. The soil samples for properties determination were collected from locations distributed on a regular grid 100 × 100 m (20 points). The samples were collected from the humus horizon (0–10 cm) after removing organic horizon. Basic chemical properties, heavy metal content, polycyclic aromatic hydrocarbons (PAHs) content and magnetic susceptibility values were determined in soil samples. Additionally, enzymatic activity and microbiological biomass was determined in the samples. Our study confirmed the importance of texture in PAHs distribution. A strong correlation between PAHs content and silt content in the soils studied was noted. The regression tree analysis confirmed the importance of the silt content, followed by soil organic carbon in PAHs distribution. Organic carbon content and nitrogen content played a predominant role in controlling the microbial activity. In our study, we did not note a relationship between enzymatic activity, microbiological soil biomass and the amount of PAHs. This may be due to the effective sorption and immobilization of PAHs by particles of fine fractions, especially silt. Obtained results confirmed the usefulness of magnetic susceptibility in the assessment of heavy metals contamination of forest soils. We noted high correlation between magnetic susceptibility value and heavy metals content. Moreover, the relationship between magnetic susceptibility and soil texture of the topsoil was also observed.

scholarly journals Concentration of some Polycyclic Aromatic Hydrocarbons in soil samples of Kirkuk province, Iraq

2021 ◽  
Vol 877 (1) ◽  
pp. 012023
Author(s):  
Yasin H Aoeed ◽  
Awaz B Mohammed ◽  
Attalah M. Hameed
Keyword(s):  
Gas Chromatography ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Winter Season ◽  
Soil Samples ◽  
Autumn Season ◽  
Polycyclic Aromatic ◽  
Individual Hydrocarbons ◽  
Total Hydrocarbons ◽  
Oil Company

Abstract In order to evaluate the quantity of twelve PAHs (Naphthalene, Tetraphan and Acenaphthylene Fluorene, Phenanthrene, Anthracene, Pyrene, Benzo [a] Anthracene, Ovalene, Chrysene, Benzo [a] fluoranthene and DiBenzo [ah] Anthracene) in the soil samples from Kirkuk province, seven sites (Ras El-Gesr, Benja Ali, Wahed Hozeran, North Oil Company (NOC), Lillan, Kubri and Chimen) were selected using Gas Chromatography (GC) during the autumn 2017 and winter 2018. The results showed that the highest concentration of individual hydrocarbons during the autumn season was for the Acenaphthylene compound in the NOC site 131.19 μg/kg, and for Naphthalene compound, was 100.543μg/kg. The NOC recorded the highest concentration of total hydrocarbons 891.65 μg/kg. For the winter season, the highest concentration of polycyclic aromatic hydrocarbons was recorded for the Fluorene compound at the NOC site 79.19 μg/kg. Fluorene and Naphthalene compounds achieved the highest averages for the season (43.24 and 42.984 μg/kg) respectively, and recorded the location of the NOC, the highest summation of total hydrocarbons amounted to 609.77 μg/kg.

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