scholarly journals Distribution of oil, grease and polycyclic aromatic hydrocarbons in coastal water and sediments of Suez Bay

2021 ◽  
Vol 50 (4) ◽  
pp. 373-384
Author(s):  
Randa Elmorsi
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Molecular Mass ◽  
Aromatic Hydrocarbons ◽  
Western Coast ◽  
Oil And Grease ◽  
Offshore Area ◽  
Flame Ionization ◽  
Water And Sediment ◽  
Polycyclic Aromatic ◽  
Study Sites

Abstract The permanganate index (PI), oil and grease (O&G), and 17 polycyclic aromatic hydrocarbons (PAHs) were analyzed in surface sediment and water samples collected at 13 sites along the western coast of Suez Bay (SB). PI and O&G in the SB coastal seawater ranged from 9.6 mg O2 l−1 and 17.0 mg l−1 to 16.0 mg O2 l−1 and 37.0 mg l−1, respectively. The level of polycyclic aromatic hydrocarbons (PAH) in water and sediment in the SB offshore area was determined by gas chromatography/flame ionization detection. The concentration ranged from 0.574 to 16873.2 ng g−1 in the sediment and 0.502 to 43.540 ng l−1 in water. The collected data were compared with values reported in the literature. The possible source and origin of pollution was also assessed based on the determined relative PAH levels at the study sites, the ratio of low molecular mass PAHs (LPAHs) to high molecular mass PAHs (HPAHs), and molecular indices of samples.

scholarly journals Distribution of Oil, Grease and Petroleum Hydrocarbons in Coastal Water and Sediments of Suez Bay

2021 ◽  
Author(s):  
Randa Elmorsi
Keyword(s):  
Gas Chromatography ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Petroleum Hydrocarbons ◽  
Chromatographic Analysis ◽  
Western Coast ◽  
Oil And Grease ◽  
Water And Sediment ◽  
Polycyclic Aromatic ◽  
Source Of Pollution

Abstract Permanganate index (PI), oil and grease (O&G) and 17 polycyclic aromatic hydrocarbons (PAHs) were tested in 13 sites of surface sediment and water samples collected from the western coast of Suez Bay (SB). PI and O&G in the SB coastal seawater ranged from 9.6 mg O2 L− 1 and 17.0 mg L− 1 to 16.0 mg O2 L− 1 and 37.0 mg L− 1, respectively. Petroleum aromatic hydrocarbon levels of water and sediment in the area offshore of SB have been determined by Gas Chromatography. The concentration ranged from 0.574 to 16873.2 ng g− 1 in sediment and 0.502 to 43.540 ng L− 1 in water. The observed data were compared with values reported in the literature. The possible source of pollution was also identified by using gas chromatographic analysis of the samples.

scholarly journals How to add a five-membered ring to polycyclic aromatic hydrocarbons (PAHs) – molecular mass growth of the 2-naphthyl radical (C10H7) to benzindenes (C13H10) as a case study

2019 ◽  
Vol 21 (30) ◽  
pp. 16737-16750 ◽  
Author(s):  
Long Zhao ◽  
Matthew Prendergast ◽  
Ralf I. Kaiser ◽  
Bo Xu ◽  
Utuq Ablikim ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Molecular Mass ◽  
Aromatic Hydrocarbons ◽  
Membered Ring ◽  
Growth Processes ◽  
Mass Growth ◽  
Aryl Radicals ◽  
Polycyclic Aromatic

The reaction of aryl radicals with allene/methylacetylene leads to five-membered ring addition in PAH growth processes.

scholarly journals Application of Programmed Temperature Vaporization Large Volume Injection Gas Chromatography (PTV-LVI-GC) to the Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) in Soils

2017 ◽  
Vol 57 (2) ◽  
Author(s):  
Miguel Ángel Delgadillo-Marín ◽  
Araceli Peña-Álvarez ◽  
Mario Villalobos Villalobos
Keyword(s):  
Gas Chromatography ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Large Volume ◽  
Contaminated Soils ◽  
Large Volume Injection ◽  
Method Performance ◽  
Flame Ionization ◽  
Polycyclic Aromatic ◽  
Programmed Temperature Vaporization

A sensitive, selective and robust method was developed to quantify low levels of polycyclic aromatic hydrocarbons (PAHs) in soils by means of Programmed Temperature Vaporization - Large Volume Injection (PTV-LVI) coupled to gas chromatography with flame ionization detection. Optimal vent pressure and flux at the PTV inlet of the GC system were determined by comparison of peak areas obtained from injection of a standard PAHs mixture at different conditions. Assessment of method performance was carried out with home-made standards prepared by spiking three non-PAH contaminated soils that contained 1.8%, 4.6% and 25% natural organic matter (NOM), with mixtures of six different PAHs at low concentration levels. Detection limits between 9 and 12 ng g<sup>-1</sup> and variation coefficients below 11% were determined from analysis of spiked samples of the soil with lowest NOM content. PAHs recoveries typically ranged from 61% to 96% for the three studied soils.

scholarly journals Occurrence and Distribution of Polycyclic Aromatic Hydrocarbons in Water and Sediment Collected along the Harbour Line, Mumbai, India

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
V. Dhananjayan ◽  
S. Muralidharan ◽  
Vinny R. Peter
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Sediment Quality ◽  
Quality Criteria ◽  
Marine Organisms ◽  
High Concentration ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Polycyclic Aromatic ◽  
Water And Sediment Samples

This study investigated the occurrence of polycyclic aromatic hydrocarbons (PAHs) in water and sediment samples collected along the harbour line, Mumbai, India. The ∑PAHs quantified in water and sediment samples were ranged from 8.66 ng/L to 46.74 ng/L and from 2608 ng/g to 134134 ng/g dry wt., respectively. Significantly high concentration of ∑PAHs was found in water samples of Sewri and sediment samples of Mahul (P<0.05). PAH concentrations detected in the present study were several folds higher than the existing sediment quality criteria suggested by various statutory agencies. The PAH composition patterns in water and sediments suggest the dominance of high molecular weight compounds and indicate important pyrolytic and petrogenic sources. The occurrence of PAHs in the marine environment has attracted the attention of the scientific community as these compounds are frequently detected in seawater and sediments at increasing levels and can have adverse health effects on marine organisms and humans. PAH concentrations detected at Sewri-Mahul site were sufficiently high to pose a risk to marine organisms if they are exposed continuously to this concentration. Hence, continuous monitoring of the ecosystem is highly warranted.

scholarly journals Fate and Transport of Polycyclic Aromatic Hydrocarbons in Upland Irish Headwater Lake Catchments

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Heidi E. M. Scott ◽  
Julian Aherne ◽  
Chris D. Metcalfe
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
East Coast ◽  
Atmospheric Transport ◽  
Fate And Transport ◽  
Semipermeable Membrane ◽  
Semipermeable Membrane Devices ◽  
Polycyclic Aromatic ◽  
Study Sites ◽  
To Receive

Polycyclic aromatic hydrocarbons (PAHs) are a concern due to their carcinogenicity and propensity for transboundary atmospheric transport. Ireland is located on the western periphery of Europe and assumed to receive clean Atlantic air. As such, it has been used as an atmospheric reference for comparison to other regions. Nonetheless, few studies have evaluated concentrations of PAHs within the Irish environment. In the current study, PAHs were measured at five upland (500–800 masl) headwater lake catchments in coastal regions around Ireland, remote from industrial point source emissions. Semipermeable membrane devices were deployed in lakes for a 6-month period in July 2009, and topsoils were sampled from each catchment during October 2010. The concentrations of PAHs were low at most study sites with respect to other temperate regions. Homologue groups partitioned between lake and soil compartments based on their molecular weight were: “lighter” substances, such as Phenanthrene and Fluorene, were found in higher proportions in lakes, whereas “heavier” compounds, such as Chrysene and Benz[a]anthracene, were more prominent in soils. Concentrations of PAHs were highest at the east coast sites, potentially due to contributions from historical transboundary and regional combustion sources.

scholarly journals Concentration Assessment And Source Evaluation of Polycyclic Aromatic Hydrocarbons (PAHs) In Soil And Crops of The Agro-Industrial Tobacco Production Area of Igboho, Nigeria

2021 ◽  
Author(s):  
Taofik Adewale Adedosu ◽  
Okanlawon John Ajibade ◽  
Adeniyi Kayode Omotayo ◽  
Haleema Omolola Adedosu ◽  
Idris Mufutau
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Environmental Pollution ◽  
Aromatic Hydrocarbons ◽  
Total Concentration ◽  
Flame Ionization ◽  
Tobacco Production ◽  
Global Environmental ◽  
Toxicity Potential ◽  
Polycyclic Aromatic ◽  
Production Area

Abstract The contribution of tobacco smoking and cigarette butts to global environmental pollution has been given significant attention. However, little is known about tobacco-related agricultural activities on environmental pollution by polycyclic aromatic hydrocarbons (PAHs). In this study, the spatial distributions, composition, source, and toxicity potential of polycyclic aromatic hydrocarbons (PAHs) in soil and food crops within the vicinity of the agro-industrial tobacco production area of Igboho, Nigeria was investigated. Soil and food crop (Zea mays, Dioscorea alata, and Manihot esculenta) samples collected from the tobacco curing site and the surrounded farmlands were analyzed for the PAHs concentrations. The identification and quantification of priority PAHs in the samples were carried out using a gas chromatograph equipped with a flame-ionization detector. The total concentration of the priority PAHs in the soil ranged between 136.70 ng.g-1 to 889.30 ng.g-1. The total concentration of carcinogenic PAHs ranged from 6.07 ng.g-1 to 321.04 ng.g-1, and the total concentration of toxic PAHs ranged from 6.27 ng.g-1 to 254.37 ng.g-1. The PAHs level was highest in crops from farmlands closest to the tobacco curing site. The distribution of PAHs ring size is in the order of 6-rings ˃ 4-rings ˃5-rings ˃ 3-rings ˃ 2, and the diagnostic indices showed that the sources of PAHs in the samples were mainly pyrogenic and associated with tobacco curing activities in the area.

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