Results 11 to 20 of about 123,857 (304)

Chemistry of strained polycyclic compounds—III [PDF]

Tetrahedron, 1972
Abstract The synthesis of three bridgehead alcohols, viz. 1-bromo-4-hydroxypentacyclo[4.3.0.0 2,5 .0 3,8 .0 4,7 ]nonan-9-one ethylene ketal ( 8 ), 1-bromo-4-hydroxypentacyclo[4.3.0.0 2,5 .0 3,8 .0 4,7 ]nonane ( 18 ) and 1-bromo-4-hydroxypentacyclo[4.2.0.0 2,5 .0 3,8 .0 4,7 ]octane ( 24 ) is described.
A.J.H. Klunder, B. Zwanenburg
openaire   +2 more sources

Atmospheric pressure gas chromatography-time-of-flight-mass spectrometry (APGC-ToF-MS) for the determination of regulated and emerging contaminants in aqueous samples after stir bar sorptive extraction (SBSE) [PDF]

, 2014
This work presents the development, optimization and validation of a multi-residue method for the simultaneous determination of 102 contaminants, including fragrances, UV filters, repellents, endocrine disruptors, biocides, polycyclic aromatic ...
Arbulu, Azzouz, Barco-Bonilla, Buchholz, Cacho, Camino-Sánchez, Canellas, de Sousa, Domeño, Eduardo González-Mazo, Esteve-Turrillas, Gago-Ferrero, Gomez, Jaspers, Johnsen, Kataoka, Kawaguchi, Kawaguchi, Krüger, Kumirska, Liu, Machado, Magi, Marina G. Pintado-Herrera, Negreira, Ochiai, O′Toole, Pablo A. Lara-Martín, Pintado-Herrera, Pintado-Herrera, Portolés, Prieto, Pérez-Carrera, Quintana, Ramírez, Rodil, Sampedro, Sanchez-Ortega, Stevens   +38 more
core   +2 more sources

DFT and Multinuclear NMR Spectroscopy in the Study of Five-Membered Saturated Metallocarbocycles of Main III Group Metals

Chemistry Proceedings, 2023
Five-membered saturated metallacarbocycles represent a large family of organometallic compounds, which are frequently postulated as reactive intermediates in catalysis or as precursors for the synthesis of a wide range of functionally substituted ...
Tatyana V. Tyumkina, Denis N. Islamov
doaj   +1 more source

Urinary naphthalene and phenanthrene as biomarkers of occupational exposure to polycyclic aromatic hydrocarbons. [PDF]

, 2008
OBJECTIVES: The study investigated the utility of unmetabolised naphthalene (Nap) and phenanthrene (Phe) in urine as surrogates for exposures to mixtures of polycyclic aromatic hydrocarbons (PAHs).
Garshick, E, Hart, J. E., Herrick, R. F., Laden, F., McClean, M. D., Rappaport, S. M., Smith, T. J., Sobus, J. R., Waidyanatha, S., Zheng, Y.   +9 more
core   +3 more sources

Identification of sources of elevated concentrations of polycyclic aromatic hydrocarbons in an industrial area in Tianjin, China [PDF]

, 2009
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined by gas chromatography equipped with a mass spectrometry detector in 105 topsoil samples from an industrial area around Bohai Bay, Tianjin in the North of China.
Han, Jingyi, Jiao, W.T., Li, J., Lu, Y.L., Luo, W., Shi, Y.J., Wang, G., Wang, T.Y.   +7 more
core   +3 more sources

Highlighting the effects of co‐eluting interferences on compound specific stable isotope analysis of polycyclic aromatic hydrocarbons using comprehensive two‐dimensional gas chromatography [PDF]

, 2014
Accuracy is the most important issue when carrying out compound specific stable isotope analysis of polycyclic aromatic hydrocarbons extracted from complex samples.
Blessing, Buczyńska, Elsner, Gauchotte-Lindsay, Graham, Liu, Mansuy, Mazeas, McGregor, McGregor, McRae, Meier-Augenstein, Pashin, Philp, Philp, Saber, Steinbach   +16 more
core   +1 more source

Synthesis of C₆₀ Fullerene Hexakis Adducts Based on Strained Polycyclic Hydrocarbons and Their Application in Organic Electronics

Chemistry Proceedings, 2023
Using the Bingel–Hirsch reaction, new hexakis methanofullerenes containing strained polycyclic hydrocarbons were synthesized. Organic field-effect transistors were manufactured based on the obtained compounds.
Arslan R. Akhmetov, Rishat I. Aminov, Zarema R. Sadretdinova, Renat B. Salikhov, Ilnur N. Mullagaliev, Timur R. Salikhov   +5 more
doaj   +1 more source

Polycyclic Compounds Affecting Electrical Tree Growth in Polypropylene Under Ambient Temperature

IEEE Access, 2020
Polypropylene (PP) has great potential to be used as recyclable high-voltage direct current (HVDC) cable insulation material. Electrical tree is the key factor that leads to cable insulation failure and limits the increase of HVDC transmission voltage ...
Lewei Zhu, Boxue Du, Zhonglei Li, Hongna Li, Kai Hou   +4 more
doaj   +1 more source

Environmental contaminants exposure and preterm birth: a systematic review [PDF]

, 2019
Preterm birth is an obstetric condition associated with a high risk of infant mortality and morbidities in both the neonatal period and later in life, which has also a significant public health impact because it carries an important societal economic ...
Benedetti Panici, Pierluigi, MASCIULLO, LUISA, Piacenti, Ilaria, Porpora, Maria Grazia, Rech, Francesco, Scaramuzzino, Sara   +5 more
core   +1 more source

Seasonal and site-specific variation in vapour and aerosol phase PAHs over Flanders (Belgium) and their relation with anthropogenic activities [PDF]

, 2005
Peer ...
Bencs, L., Berghmans, P., Bleux, N., de Hoog, J., Deutsch, F., Grieken, R., Ravindra, K., Roekens, E., Wauters, E.   +8 more
core   +1 more source