نتایج جستجو برای: polycyclic aromatic hydrocarbons pahs

تعداد نتایج: 59284  

پورنگ, نیما, نصراله زاده ساروی, حسن, یونسی پور, حوریه,

Background and purpose: Hydrocarbons such as Polycyclic Aromatic Hydrocarbons (PAHs) are considered as priority organic compounds pollutants of the Caspian Sea due to their high toxicity nature. Increasing the concentration of hydrocarbons in the environment has adverse effect on aquatic life and human health. This study was conducted to determine the 16 Polycyclic Aromatic Hydrocarbons (16...

Journal: :Journal of The Electrochemical Society 2021

In recent years the scientific community showed an increasing interest for implementing new, rapid, sensitive and cheaper detection methods that are far better than classical of quantification polycyclic aromatic hydrocarbons (PAHs), especially with progress in synthesis nanomaterials can be successfully used design electrochemical sensors. This review aims to discuss latest research activities...

2016
Chia-Nan Yeh Jeng-Da Chai

We investigate the role of Kekulé and non-Kekulé structures in the radical character of alternant polycyclic aromatic hydrocarbons (PAHs) using thermally-assisted-occupation density functional theory (TAO-DFT), an efficient electronic structure method for the study of large ground-state systems with strong static correlation effects. Our results reveal that the studies of Kekulé and non-Kekulé ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
mohammad hosein habibi mohammad reza hadjmohammadi

a solid-phase extraction (spe) method for sample clean-up and preconcentration followed by reversed-phase high-performance liquid chromatography (rp-hplc) with uv detection is reported for determination of polycyclic aromatic hydrocarbons (pahs) in the caspian seawater. a good resolution was obtained using acetonitrile:water (40:60) as mobile-phase for separation of these compounds. the effect ...

Journal: :journal of food biosciences and technology 0
z. taghvaee standard research institute-isiri, faculty of food industry and agriculture, karaj, iran. z. piravivanak standard research institute-isiri, faculty of food industry and agriculture, karaj, iran. k. rezaei university of tehran, department of food science, engineering and technology, karaj, iran. m. faraji standard research institute-isiri, faculty of food industry and agriculture, karaj, iran.

abstract: in this study, an analytical method is developed to determine 15 polycyclic aromatic hydrocarbons (pahs) in olive and refined pomace olive oils using hplc coupled with a fluorescence detector. the standardised method of ultrasound-assisted solvent extraction consisted of liquid–liquid extraction with organic solvent and purification on c18 and florisil bonded-phase cartridges was modi...

2011
DEBASISH BANDYOPADHYAY JOSE C. GRANADOS JOHN D. SHORT BIMAL K. BANIK

Polycyclic aromatic hydrocarbons (PAHs) are considered to be significant environmental carcinogens. Additionally, various planar ring systems are capable of intercalating with DNA, leading to a number of drugs that possess chemotherapeutic activity. In this study, three new polyaromatic compounds with a side chain were synthesized, and spectroscopic as well as elemental analyses were performed....

Amir Hossein Charkhabi Parviz Shafiee Sayed Abbas Shojaosadati,

In this study, the degradation potential of five polycyclic aromatic hydrocarbons (PAHs) by aerobic mixed bacterial cultures was investigated. Microorganisms were isolated from hydrocarbon contaminated soils of Shadegan wetland located in southwest of Iran. The degradation experiments were conducted in liquid cultures. PAH or PAHs concentration was 100 mg/L at the beginning of degradation e...

Journal: :organic chemistry research 0
leila mahdavian doroud branch, islamic azad university, p.o. box: 133. doroud. iran

polycyclic aromatic hydrocarbons (such as, anthracene, benzo[a]pyrene and so on) are non-polar, hydrophobic compounds, which are not ionized. they are only slightly soluble in water. they are very dangerous compounds in the environment. the single-walled carbon nanotube (swnt) is used for removal and conversion of anthracene to low-risk products. in this study, electron transfer between anthrac...

2012
Sara Näslund Andréasson Haile Mahteme Bo Sahlberg Helena Anundi

OBJECTIVE This study identified and quantified polycyclic aromatic hydrocarbons (PAHs) in electrocautery smoke during 40 peritonectomy procedures and investigated any correlations and/or differences between levels of PAHs and perioperative variables. METHODS PAHs were measured in personal and stationary sampling by 40 mm Millipore cassettes, for adsorption of both gaseous and particle-bound P...

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