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p xylene/hymenoxys rusbyi
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Страница 1 от 21 резултата
Influence of aromatic hydrocarbons on the metabolism of dichloromethane to carbon monoxide in rats.
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The influence of prior or simultaneous oral administration of benzene, toluene, o-, m-, or p-xylene on the carboxyhemoglobin (COHb) level after a single dose of dichloromethane (DCM) was investigated in male rats. Six hours after administration of DCM, 6.2 mmol/kg, the mean maximum COHb level was
A comparison of the acute neuroactive effects of dichloromethane, 1,3-dichloropropane, and 1,2-dichlorobenzene on rat flash evoked potentials (FEPs).
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Previous research showed that acute exposure to dichloromethane (DCM) produced a selective reduction in peak N30 of flash evoked potentials (FEPs) in rats. In contrast, acute exposures to p-xylene or toluene selectively reduced FEP peak N160. The present experiments compared the effects of DCM (log
Affinity-based elimination of aromatic VOCs by highly crystalline multi-walled carbon nanotubes.
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Carbon nanotubes (CNTs) are capable of adsorbing pollutant chemicals. Their adsorptive capacities and adsorbing mechanisms, however, are not fully understood. As-grown CNTs often contain both crystalline and amorphous carbon, and the ratio of carbon types can affect adsorption. In this study, highly
Direct coupling of ionic liquid based single-drop microextraction and GC/MS.
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The use of ionic liquids as extracting media in single-drop liquid-phase microextraction (SDME) and its direct coupling to gas chromatography/mass spectrometry (GC/MS) is presented. For this purpose, a new removable interface that enables the introduction of the extracted analytes into the GC
BTEX Emissions from the Largest Landfill in Operation in Rio de Janeiro, Brazil.
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The emission rates and the ambient air concentrations of benzene, toluene, ethyl benzene and xylenes (BTEX) were measured over the intermediate cover layer and atmosphere of the Seropédica landfill, Rio de Janeiro, Brazil. BTEX were sampled using coconut shell charcoal cartridges, followed by
Novel and economic acid-base indicator based on (p-toluidine) oligomer: Synthesis; characterization and solvatochromism applications.
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A new (p-toluidine) oligomer (PTO) was facile synthesized and economically routed via chemical oxidative polymerization by potassium dichromate as an initiator in an acidic aqueous medium at room temperature. The characterization of (p-toluidine) oligomer (PTO) has been described by various
Hydrogen-bond strengthening upon photoinduced electron transfer in ruthenium-anthraquinone dyads interacting with hexafluoroisopropanol or water.
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Quinones play a key role as primary electron acceptors in natural photosynthesis, and their reduction is known to be facilitated by hydrogen-bond donors or protonation. In this study, the influence of hydrogen-bond donating solvents on the thermodynamics and kinetics of intramolecular electron
An integrated QSAR-PBPK modelling approach for predicting the inhalation toxicokinetics of mixtures of volatile organic chemicals in the rat.
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The objective of this study was to predict the inhalation toxicokinetics of chemicals in mixtures using an integrated QSAR-PBPK modelling approach. The approach involved: (1) the determination of partition coefficients as well as V(max) and K(m) based solely on chemical structure for 53 volatile
Bio-oxidation of airborne volatile organic compounds in an activated sludge aeration tank.
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An activated sludge aeration tank (40 x 40 x 300 cm, width x length x height) with a set of 2-mm orifice air spargers was used to treat gas-borne volatile organic compounds (VOCs; toluene, p-xylene, and dichloromethane) in air streams. The effects of liquid depth (Z), aeration intensity (G/A), the
Spatial/temporal variations and source apportionment of VOCs monitored at community scale in an urban area.
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This study aimed to characterize spatial/temporal variations of ambient volatile organic compounds (VOCs) using a community-scale monitoring approach and identify the main sources of concern in Paterson, NJ, an urban area with mixed sources of VOCs. VOC samples were simultaneously collected from
Rhodium(i), rhodium(iii) and iridium(iii) carbaporphyrins.
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Treatment of a benzocarbaporphyrin with [Rh(CO)2Cl]2 in refluxing dichloromethane gave a rhodium(i) dicarbonyl complex, and further reaction in refluxing pyridine afforded an organometallic rhodium(iii) derivative. The carbaporphyrin also reacted with [Ir(COD)Cl]2 and pyridine in refluxing p-xylene
Photoinduced electron transfer in covalent ruthenium-anthraquinone dyads: relative importance of driving-force, solvent polarity, and donor-bridge energy gap.
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Four rigid rod-like molecules comprised of a Ru(bpy)(3)(2+) (bpy = 2,2'-bipyridine) photosensitizer, a 9,10-anthraquinone electron acceptor, and a molecular bridge connecting the two redox partners were synthesized and investigated by optical spectroscopic and electrochemical means. An attempt was
[Composition characteristics of atmospheric volatile organic compounds in the urban area of Beibei District, Chongqing].
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In order to study the composition and distribution of VOCs (Volatile Organic Compounds) in the atmosphere in the urban area of Beibei district, Chongqing, atmospheric samples were collected from March 2012 to February 2013 with special stainless steel cylinders, and analyzed with a three-stage
Process-based VOCs source profiles and contributions to ozone formation and carcinogenic risk in a typical chemical synthesis pharmaceutical industry in China
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The chemical synthesis pharmaceutical industry plays an important role in VOCs emissions from industrial sources, which has caused increasing concern. In this study, the process-based pollution characteristics of VOCs from the chemical synthesis pharmaceutical industry were investigated in the
Synthesis and characterization of Pt(CN-p-(C(2)H(5))C(6)H(4))(2)(CN)(2), a crystalline vapoluminescent compound that detects vapor-phase aromatic hydrocarbons.
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The vapochromic and vapoluminescent compound Pt(CN-p-(C(2)H(5))C(6)H(4))(2)(CN)(2) (abbreviated PtC(2)) is conveniently synthesized by the thermal rearrangement of [Pt(CN-p-(C(2)H(5))C(6)H(4))(4)][Pt(CN)(4)]. Recrystallization of PtC(2) gives a crystalline orange morph (O-PtC(2)) and an amorphous
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