Pyrolysis characteristics and mechanism of tobacco stem were studied by pyrolysis coupled with gas chromatography/mass spectrometry (PyGC/MS), thermogravimetric analyzer coupled with Fourier transform infrared spectrometry, and mass spectrometry (TG-FTIR and TG-MS) techniques. The composition of evolved volatiles from fast pyrolysis of tobacco stem was determined by Py-GC/MS analysis, and the e...

Submit Manuscript | http://medcraveonline.com Abbreviations: SCs: Synthetic Cannabinoids; Δ-9-THC: Delta9-TetraHydraCannabinol; UHPLC: Ultra High Performance Liquid Chromatography; DAD: Photodiode Array; MS: Mass Spectrometry. GC: Gas Chromatography; DART: Direct Analysis in Real Time; TOF: Time of Flight Spectrometry; NMR: Nuclear Magnetic Resonance; ATR: Attenuated Total Resonance; FTIR: Four...

metal oxides play a very important role in many areas of chemistry, physics and materials science.the metal elements are able to form a large diversity of oxide compounds. in this investigation, wesynthesis sno2 and c,n,s-tridoped sno2 nanoparticles by precipitation method. the synthesizedsno2 and c,n,s-tridoped sno2 nanoparticles were characterized by instrumental analysis methods,such as x-ra...

in this work, hydrogel nanocomposites were synthesized by solution polymerization of acrylic acid (aa) and itaconic acid (ia) in the presence of cotton fabric. ammonium persulfate (aps) was used as the polymerization initiator in the presence of a crosslinker, methylene bisacrylamide (mba). insertion of ag followed by reduction of ag+ cations results in a hydrogel nanocomposite. the structure a...

a bionanocomposite film was developed by nanoclay incorporation to chitosan films, using a solution casting method and the effects of nanoclay concentration (0.5, 1.0, and 3% w/w) on the physical and mechanical properties of the chitosan films were evaluated. moreover, x-ray diffraction (xrd), scanning electron microscopy, and fourier transform infrared spectra (ftir) were used for studying mic...

In this paper, we report on the functionalization of silicon nanostructured (NanoSi) surface with an organic layer of nitrilotriacetic acid (NTA) and its subsequent use as an affinity surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) interface for histidine-tagged peptide enrichment and mass spectrometry analysis. The NTA terminal groups are immobilized onto the NanoSi s...

Ri6ea ornata seed oil was found to contain 12,13-epoxy-octadec-cis-9-enoic acid (vernolic acid, 22.0%) along with the other normal fatty acids like palmitic acid (24.2%), stearic acid (8.9%), oleic acid (17.1%) and linoleic acid (27.8%). The identification and characterization was based on Fourier transform infrared (FTIR), H-NMR, mass spectrometry (MS), gas–liquid chromatography (GLC)-techniqu...

manganese is one of the significant raw materials for various industries and most difficult element to remove from water because of its high solubility. the treatment of mn (ii) contained wastewater is stringent for environmental preservations. in the present study adsorption of mn2+ on zero-valent iron nanoparticles synthesized by chemical reduction process and modified with phosphate coating ...

objective(s): chitosan nanoparticles (cnps) were prepared based on the ionic gelation of chitoan with anionic compounds of ocimum basilicum leaf extract. materials and methods: after addition of ocimum basilicum leaf extract to chitosan solution, the physicochemical properties of the nanoparticles were determined by field emission scanning electron microscope (fesem), fourier transform infrared...