Hiba Mahgoub - Academia.edu (original) (raw)

Papers by Hiba Mahgoub

Analysis of the sixteen polycyclic aromatic hydrocarbons (PAHs) listed by US Environmental Protec... more Analysis of the sixteen polycyclic aromatic hydrocarbons (PAHs) listed by US Environmental Protection Agency (EPA) priority pollutant was carried out in the smoke of six wood sample used in Dokhan incense collected from local market of Khartoum – Sudan. The identification of PAHs was performed using gas chromatography coupled to mass spectrometry (GC/MS) with the aid of PAHs standard. The following PAHs have been identified: naphthalene, acenaphthylene, phenanthrene, anthracene, fluoranthene and pyrene. The rest of 16 PAHs i.e acenaphthene, fluorene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)anthracene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenzo(a,h)anthracene and benzo(g,h,i)perylene were not found in any of the selected sample. The most pollutant PAHs were present in samples 1 (Talih) and sample 5 (Habeel). The least pollutant samples were samples 6 (Quleate), sample 2 (Macintosh) and sample 3 (Shaf). Sample 4 (Sopag) did not contain any PAHs.

Several analytical techniques have been developed and applied for identification and quantificati... more Several analytical techniques have been developed and applied for identification and quantification of polycyclic aromatic hydrocarbons (PAHs) present in different samples. These analytical techniques include gas chromatography coupled with flame ionization detectior (GC/FID), gas chromatography coupled with a mass spectrometry (GC/MS), high performance liquid chromatography (HPLC) coupled with an ultraviolet or fluorescence detector, and thin-layer chromatography (TLC) with fluorescence detection. Since sensitive analytical techniques were essential in the determination of the presence and levels of these toxic compounds, some aspects of standard preparation and suitable instrumental condition for quantification of the sixteen PAHs listed by the U.S. environmental protection agency (EPA) have been reviewed in this article. The quantification performance of each technique has been comparable for different samples matrix.

International journal of multidisciplinary and current research, 2015

In this study biodiesel was synthesized from waste cooking oil from Al-Baha city – KSA by alkali ... more In this study biodiesel was synthesized from waste cooking oil from Al-Baha city – KSA by alkali catalyzed transesterification. Optimization of reaction conditions: catalyst amount, reaction temperature, reaction time and oil to methanol molar ratio have been studied. The best conversion value (96.33%) was obtained form 0.35 wt% NaOH catalyst amount, 30 min reaction time, 55°C reaction temperature and 1:6 oil to methanol molar ratio. Biodiesel viscosity, specific gravity, pour point, cloud point, acid value and cetane number were measured and compared with ASTM D 6571 standard for biodiesel. The fatty acid methyl esters have been analyzed by gas chromatography – mass spectrometry.

International Journal of Science and Research (IJSR), 2016

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in our environment and their im... more Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in our environment and their importance appears from their toxicity and carcinogenicity to human. Water can become contaminated with PAHs from different sources such as runoff in urban areas, waste water from certain industries and petroleum spills. The selected extraction technique, not only influences the accuracy of the results, but also determines the total analysis time and costs. Different extraction techniques used to release PAHs from water samples have been overviewed since proper extraction procedures were necessary to achieve optimum analytical results. The extraction performance of each technique in terms of extraction conditions, time and further treatment required were also comparable. Selecting the suitable and effective extraction method for extracting PAHs from different water samples have been highlighted in this review; the aim was to provide an overview of current knowledge and information in order to assess the need for further extraction, analysis and quantification of these toxic compounds in water samples.

Journal of Chemistry, 2019

This article offers a review on the application of nanoparticles (NPs) that have been used as sor... more This article offers a review on the application of nanoparticles (NPs) that have been used as sorbents in the analysis of polycyclic aromatic hydrocarbons (PAHs). The novel advances in the application of carbon NPs, mesoporous silica NPs, metal, metal oxides, and magnetic and magnetised NPs in the extraction of PAHs from matrix solutions were discussed. The extraction techniques used to isolate PAHs have been highlighted including their advantages and limitations. Methods for preparing NPs and optimized conditions of NPs extraction efficiency have been overviewed since proper extraction procedures were necessary to achieve optimum analytical results. The aim was to provide an overview of current knowledge and information in order to assess the need for further exploration that can lead to an efficient and optimum analysis of PAHs.

Modern Chemistry & Applications, 2017

Burning incense often produces air pollutants that may represent a health risk for humans. The Po... more Burning incense often produces air pollutants that may represent a health risk for humans. The Polycyclic Aromatic Hydrocarbons (PAHs) were identified in Oud incense which is matter of great concern because nowadays, incense is used inside homes as well as in public places and its adverse health effect cannot be ignored. Our main objective was to assess the concentration of individual PAHs compound in the smoke of Oud incence. The PAHs concentrations were determined by using High Performance Liquid Chromatography (HPLC). All Oud samples were collected from local market of Al-Baha city southwest Saudi Arabia. The total mean concentration of PAHs in Oud samples was 2.79 mg/m3 and the mean concentration of individual PAHs namely naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(b)fluoranthene and benzo(a) pyrene was 0.10, 0.26, 1.22, 0.12, 1.06, 0.02, 0.32, 0.26, 0.03, 0.10, 0.08 and 0.18 mg/m3 respe...

Modern Chemistry & Applications, 2017

Burning incense often produces air pollutants that may represent a health risk for humans. The Po... more Burning incense often produces air pollutants that may represent a health risk for humans. The Polycyclic Aromatic Hydrocarbons (PAHs) were identified in Oud incense which is matter of great concern because nowadays, incense is used inside homes as well as in public places and its adverse health effect cannot be ignored. Our main objective was to assess the concentration of individual PAHs compound in the smoke of Oud incence. The PAHs concentrations were determined by using High Performance Liquid Chromatography (HPLC). All Oud samples were collected from local market of Al-Baha city southwest Saudi Arabia. The total mean concentration of PAHs in Oud samples was 2.79 mg/m 3 and the mean concentration of individual PAHs namely naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(b)fluoranthene and benzo(a) pyrene was 0

Analysis of the sixteen polycyclic aromatic hydrocarbons (PAHs) listed by US Environmental Protec... more Analysis of the sixteen polycyclic aromatic hydrocarbons (PAHs) listed by US Environmental Protection Agency (EPA) priority pollutant was carried out in the smoke of six wood sample used in Dokhan incense collected from local market of Khartoum – Sudan. The identification of PAHs was performed using gas chromatography coupled to mass spectrometry (GC/MS) with the aid of PAHs standard. The following PAHs have been identified: naphthalene, acenaphthylene, phenanthrene, anthracene, fluoranthene and pyrene. The rest of 16 PAHs i.e acenaphthene, fluorene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)anthracene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenzo(a,h)anthracene and benzo(g,h,i)perylene were not found in any of the selected sample. The most pollutant PAHs were present in samples 1 (Talih) and sample 5 (Habeel). The least pollutant samples were samples 6 (Quleate), sample 2 (Macintosh) and sample 3 (Shaf). Sample 4 (Sopag) did not contain any PAHs.

Several analytical techniques have been developed and applied for identification and quantificati... more Several analytical techniques have been developed and applied for identification and quantification of polycyclic aromatic hydrocarbons (PAHs) present in different samples. These analytical techniques include gas chromatography coupled with flame ionization detectior (GC/FID), gas chromatography coupled with a mass spectrometry (GC/MS), high performance liquid chromatography (HPLC) coupled with an ultraviolet or fluorescence detector, and thin-layer chromatography (TLC) with fluorescence detection. Since sensitive analytical techniques were essential in the determination of the presence and levels of these toxic compounds, some aspects of standard preparation and suitable instrumental condition for quantification of the sixteen PAHs listed by the U.S. environmental protection agency (EPA) have been reviewed in this article. The quantification performance of each technique has been comparable for different samples matrix.

International journal of multidisciplinary and current research, 2015

In this study biodiesel was synthesized from waste cooking oil from Al-Baha city – KSA by alkali ... more In this study biodiesel was synthesized from waste cooking oil from Al-Baha city – KSA by alkali catalyzed transesterification. Optimization of reaction conditions: catalyst amount, reaction temperature, reaction time and oil to methanol molar ratio have been studied. The best conversion value (96.33%) was obtained form 0.35 wt% NaOH catalyst amount, 30 min reaction time, 55°C reaction temperature and 1:6 oil to methanol molar ratio. Biodiesel viscosity, specific gravity, pour point, cloud point, acid value and cetane number were measured and compared with ASTM D 6571 standard for biodiesel. The fatty acid methyl esters have been analyzed by gas chromatography – mass spectrometry.

International Journal of Science and Research (IJSR), 2016

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in our environment and their im... more Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in our environment and their importance appears from their toxicity and carcinogenicity to human. Water can become contaminated with PAHs from different sources such as runoff in urban areas, waste water from certain industries and petroleum spills. The selected extraction technique, not only influences the accuracy of the results, but also determines the total analysis time and costs. Different extraction techniques used to release PAHs from water samples have been overviewed since proper extraction procedures were necessary to achieve optimum analytical results. The extraction performance of each technique in terms of extraction conditions, time and further treatment required were also comparable. Selecting the suitable and effective extraction method for extracting PAHs from different water samples have been highlighted in this review; the aim was to provide an overview of current knowledge and information in order to assess the need for further extraction, analysis and quantification of these toxic compounds in water samples.

Journal of Chemistry, 2019

This article offers a review on the application of nanoparticles (NPs) that have been used as sor... more This article offers a review on the application of nanoparticles (NPs) that have been used as sorbents in the analysis of polycyclic aromatic hydrocarbons (PAHs). The novel advances in the application of carbon NPs, mesoporous silica NPs, metal, metal oxides, and magnetic and magnetised NPs in the extraction of PAHs from matrix solutions were discussed. The extraction techniques used to isolate PAHs have been highlighted including their advantages and limitations. Methods for preparing NPs and optimized conditions of NPs extraction efficiency have been overviewed since proper extraction procedures were necessary to achieve optimum analytical results. The aim was to provide an overview of current knowledge and information in order to assess the need for further exploration that can lead to an efficient and optimum analysis of PAHs.

Modern Chemistry & Applications, 2017

Burning incense often produces air pollutants that may represent a health risk for humans. The Po... more Burning incense often produces air pollutants that may represent a health risk for humans. The Polycyclic Aromatic Hydrocarbons (PAHs) were identified in Oud incense which is matter of great concern because nowadays, incense is used inside homes as well as in public places and its adverse health effect cannot be ignored. Our main objective was to assess the concentration of individual PAHs compound in the smoke of Oud incence. The PAHs concentrations were determined by using High Performance Liquid Chromatography (HPLC). All Oud samples were collected from local market of Al-Baha city southwest Saudi Arabia. The total mean concentration of PAHs in Oud samples was 2.79 mg/m3 and the mean concentration of individual PAHs namely naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(b)fluoranthene and benzo(a) pyrene was 0.10, 0.26, 1.22, 0.12, 1.06, 0.02, 0.32, 0.26, 0.03, 0.10, 0.08 and 0.18 mg/m3 respe...

Modern Chemistry & Applications, 2017

Burning incense often produces air pollutants that may represent a health risk for humans. The Po... more Burning incense often produces air pollutants that may represent a health risk for humans. The Polycyclic Aromatic Hydrocarbons (PAHs) were identified in Oud incense which is matter of great concern because nowadays, incense is used inside homes as well as in public places and its adverse health effect cannot be ignored. Our main objective was to assess the concentration of individual PAHs compound in the smoke of Oud incence. The PAHs concentrations were determined by using High Performance Liquid Chromatography (HPLC). All Oud samples were collected from local market of Al-Baha city southwest Saudi Arabia. The total mean concentration of PAHs in Oud samples was 2.79 mg/m 3 and the mean concentration of individual PAHs namely naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(b)fluoranthene and benzo(a) pyrene was 0