Results 61 to 70 of about 19,264 (282)

Polycyclic aromatic hydrocarbon (PAH) residues in the honeybee, honey, and pollen and estimation of atmospheric concentrations in Bursa, Turkey

, 2023
Polycyclic aromatic hydrocarbon (PAH) concentrations in urban and semi-urban areas were determined in the honeybee, honey and pollen in Bursa, Turkey. The total of 14 PAH ( n-ary sumation (14)PAH) concentrations measured in the honeybee in the urban and ...
Esen, Fatma, Sarı, Mehmet Ferhat
core   +1 more source

Substrate Specificity and Structural Characteristics of the Novel Rieske Nonheme Iron Aromatic Ring-Hydroxylating Oxygenases NidAB and NidA3B3 from Mycobacterium vanbaalenii PYR-1

mBio, 2010
The Rieske nonheme iron aromatic ring-hydroxylating oxygenases (RHOs) NidAB and NidA3B3 from Mycobacterium vanbaalenii PYR-1 have been implicated in the initial oxidation of high-molecular-weight (HMW) polycyclic aromatic hydrocarbons (PAHs), forming cis-
Ohgew Kweon, Seong-Jae Kim, James P. Freeman, Jaekyeong Song, Songjoon Baek, Carl E. Cerniglia   +5 more
doaj   +1 more source

Embedding Chemistry and Pharmacy Into Sustainability

Angewandte Chemie International Edition, EarlyView.
Chemistry and pharmacy provide products and processes that are indispensable for our high living standard. To understand their relationship with sustainability is important to allow them to contribute to sustainability in a sustainable manner. An integrated overview of green, circular, and sustainable chemistry and pharmacy is given and how they have t
Klaus Kümmerer
wiley   +1 more source

Rapid measurement of polycyclic aromatic hydrocarbon contamination in soils by visible and near-infrared spectroscopy [PDF]

, 2013
Polycyclic aromatic hydrocarbons (PAHs) are widely distributed organic pollutants. At petroleum contaminated sites, PAHs are often the key risk drivers because of their carcinogenicity. Assessing the risk of PAH at contaminated sites by conventional soil
Okparanma, Reuben N.
core  

Spatial Evolution of Coke in ZSM‐5 Catalysts During Methanol‐to‐Hydrocarbons Conversion Revealed by In Situ X‐Ray Photoelectron Spectroscopy

Angewandte Chemie International Edition, EarlyView.
Coking is the central source of deactivation of zeolite catalysts. Using in situ XPS along with complementary methods, we identify differences in the formation kinetics and composition of surface coke on industrially relevant ZSM‐5 catalysts during MTH conversion, demonstrating the strong potential of this technique for studying catalyst deactivation ...
Luca Artiglia, Hannes Frey, Loïc Bénariac‐Doumal, Sung Sik Lee, Przemyslaw Rzepka, Jeroen A. van Bokhoven, Vladimir Paunović   +6 more
wiley   +1 more source

Cyclic Alkyne Approach to Heteroatom-Containing Polycyclic Aromatic Hydrocarbon Scaffolds

, 2019
We report a modular synthetic strategy for accessing heteroatom-containing polycyclic aromatic hydrocarbons (PAHs) that relies on the controlled generation of transient heterocyclic alkynes and arynes.
Evan, Darzi, Joyann, Barber, Neil, Garg
core   +1 more source

Ecotoxicity of a polycyclic aromatic hydrocarbon (PAH)-contaminated soil

Ecotoxicology and Environmental Safety, 2007
Soil samples from a former cokery site polluted with polycyclic aromatic hydrocarbons (PAHs) were assessed for their toxicity to terrestrial and aquatic organisms and for their mutagenicity. The total concentration of the 16 PAHs listed as priority pollutants by the US Environmental Protection Agency (US-EPA) was 2634+/-241 mg/kgdw in soil samples. The
I C, Eom, C, Rast, A M, Veber, P, Vasseur   +3 more
openaire   +2 more sources

Unlocking Enhanced Hydrogen Storage in Naphthalene via K‐Induced Acidity and Metal Dispersion in Dendritic Catalysts

Carbon and Hydrogen, EarlyView.
Dendritic micro‐mesoporous composite catalysts through K‐induced enhancement of acidity and metal dispersion were developed. ABSTRACT Novel dendritic ZSM‐22/DMSNs (ZD) micro‐mesoporous composites with center–radial pore structure and suitable acidity were developed by nano‐assembly strategy. Subsequently, Pt/ZD‐K catalysts were synthesized based on the
Dongze Li, Liang Qiao, Yutong Zou, Chunhui Zhou, Zhentao Liu, Penglei Ni, Xiaochun Zhu, Chunya Wang, Chunming Xu, Xilong Wang   +9 more
wiley   +1 more source

Environmental Impacts, Health Risks, and Biodegradation Strategies of Fluorene and Other Polycyclic Aromatic Hydrocarbons

Journal of Pure and Applied Microbiology
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds, composed of two or more fused benzene rings sourced from unburned fossil fuels and petroleum, recognized for their wide presence in the environment and harmful impacts on human health and ...
Syed Raju Ali, Yasir Anwar, Hani Mohammed Ali   +2 more
doaj   +1 more source

Site-selective covalent functionalization at interior carbon atoms and on the rim of circumtrindene, a C36H12 open geodesic polyarene

Beilstein Journal of Organic Chemistry, 2014
Circumtrindene (6, C36H12), one of the largest open geodesic polyarenes ever reported, exhibits fullerene-like reactivity at its interior carbon atoms, whereas its edge carbons react like those of planar polycyclic aromatic hydrocarbons (PAHs).
Hee Yeon Cho, Ronald B. M. Ansems, Lawrence T. Scott   +2 more
doaj   +1 more source