scholarly journals CHARACTERIZATION IN TERMS OF COMPOSITION AND PHYTOTOXICITY OF AQUEOUS SPORES EXTRACT

2021 ◽  
Vol 10 (20) ◽  
pp. 53-60
Author(s):  
Oana-Alexandra Drăghiceanu ◽  
Anca Nicoleta Șuțan ◽  
Codruța Mihaela Dobrescu ◽  
Nicoleta Doruța Bătut-Andrei ◽  
Liliana Cristina Soare ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Pisum Sativum ◽  
Root Growth ◽  
Bimetallic Nanoparticles ◽  
Stem Growth ◽  
Aqueous Extracts ◽  
Fresh Biomass ◽  
Ft Ir

In this study, we used aqueous extracts of fern spores and solution of AgNO3 and HAuCl4 for the synthesis of bimetallic nanoparticles Au:Ag in different proportions: 1:1 and 1:10. The spores used come from 2 species of ferns: Asplenium scolopendrium and Dryopteris filix-mas. For the characterization of the extracts with or without bimetallic nanoparticles we applied Fourier transform infrared spectroscopy (FT-IR). Phytotoxicity was tested using Pisum sativum seeds. Each extract was tested in 2 dilutions: 1:10 (D10) and 1:100 (D100). The parameters, which we determinate were the root and stem growth and fresh biomass. Root growth was stimulated in variants with Asplenium scolopendrium extract: without nanoparticles both dilution and with Au:Ag nanoparticles 1:10 D10. The highest values obtained for the stem were at D10 at the variants with Asplenium scolopendrium extract with or without bimetallic nanoparticles. The influence of extracts on fresh biomass was smaller than on the growth of root and stem.

The Preparation and Characterization of the Solid Acid Catalyst for the Esterification of the Gutter Oil

2014 ◽  
Vol 881-883 ◽  
pp. 297-301 ◽  
Author(s):  
Yan Zhi Liu ◽  
Shun Ping Wang ◽  
Kun Yuan ◽  
Huian Tang
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Active Carbon ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Raw Material ◽  
Ft Ir

The solid acid catalyst (ACSA) for the gutter oil esterification to biodiesel was prepared via active carbon as raw material by introducing the-SO3H group onto the surface of it. The ACSA were characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and elemental analysis (EA), respectively. And the results showed that the-SO3H groups were successfully introduced onto the surface of the active carbon and the containing of the-SO3H groups are higher than 0.017g per gram of ACSA.

scholarly journals LC-MS and FT-IR characterization of amber artifacts

2012 ◽  
Vol 10 (6) ◽  
pp. 1882-1889 ◽  
Author(s):  
Georgiana Truică ◽  
Eugenia Teodor ◽  
Simona Litescu ◽  
Gabriel Radu
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Fourier Transform ◽  
Liquid Chromatography ◽  
Infrared Spectroscopy ◽  
Analytical Methods ◽  
High Performance ◽  
Archaeological Sites ◽  
Ft Ir

AbstractThis work focuses on using analytical methods, such as Fourier transform Infrared spectroscopy (FTIR) and high performance liquid chromatography (HPLC) with mass spectrometry (MS) detection to assess archaeological and geological amber. The main goal of this study is to apply the previously developed and optimized analytical methods in verifying criteria to ascribe and characterize the origin of materials found in archaeological sites. The proposed LC-MS method was successfully applied for the quantification of succinic acid content both in geological and archaeological samples of amber and offers excellent linearity between 0.1 and 5µg mL−1. The developed FTIR method provided some criteria which is able to differentiate between Baltic and Romanian amber (Romanite) that furthermore validates on archaeological amber artefacts.

Hyphenated On-The-Spot TG/FT-IR Technique

1992 ◽  
Vol 46 (1) ◽  
pp. 88-92 ◽  
Author(s):  
J. A. J. Jansen ◽  
J. H. Van Der Maas ◽  
A. Posthuma De Boer
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermal Behavior ◽  
Condensed Phase ◽  
Direct Detection ◽  
Polymeric Materials ◽  
Experimental Setup ◽  
Ir Detector ◽  
Ft Ir

By the coupling of thermogravimetry (TG) and Fourier transform infrared spectroscopy (FT-IR), the thermal behavior of polymeric materials can be elucidated from their mass loss combined with characterization of the evolved components. A hyphenated TG/FT-IR technique is presented, which enables the direct detection and characterization of evolving components in TG experiments, i.e., without transferring these components from the TG to the FT-IR equipment. In this on-the-spot TG/FT-IR technique, the IR beam of the FT-IR spectrometer is led directly into the TG equipment. The IR beam is reflected by a mirror mounted inside the TG equipment and subsequently detected by a standard FT-IR detector. In this way, the evolved components are detected both in gas and condensed phase directly in the TG equipment. The detection limits are in the sub µg/s range. The experimental setup and conditions are presented together with advantages and applications in the field of polymeric research.

Characterization of NO2 Bound to the Plant Cuticle by FT-IR Spectroscopy

1993 ◽  
Vol 48 (7-8) ◽  
pp. 666-668 ◽  
Author(s):  
Patricia Luque ◽  
Antonio Heredia ◽  
Francisco J. Ramírez ◽  
Martin J. Bukovac
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Nitrogen Oxide ◽  
Tomato Fruit ◽  
Infrared Analysis ◽  
Plant Cuticle ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Nitrogen oxide binding to isolated tomato fruit cuticles has been characterized using Fourier transform infrared spectroscopy. The performed infrared analysis indicates that nitration occurs in the flavonoids of mature tomato cuticles.

scholarly journals A Facile Synthesis of Fe3O4@SiO2@ZnO for Curcumin Delivery

2021 ◽  
Vol 12 (6) ◽  
pp. 7994-8002
Keyword(s):  
Particle Size ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Average Particle Size ◽  
Average Particle ◽  
Zno Nanoparticle ◽  
Facile Synthesis ◽  
Stöber Method ◽  
Ft Ir

This paper proposed an engineered silica-coated Fe3O4 with ZnO nanoparticle, prepared by a coprecipitation/Stöber method as a curcumin delivery system. To this end, the structural characterization of the nanocomposite was performed by Fourier transform infrared spectroscopy (FT-IR), ray diffraction (XRD), VSM, and TEM. The findings show that the synthesized nanocomposite has a semispherical structure with an average particle size of 50-70 nm and excellent magnetization properties (21.4 emu/g).

Synthesis and Characterization of Triazine-Based Charring Agent and its Application in Flame Retarded Polypropylene

2014 ◽  
Vol 1033-1034 ◽  
pp. 623-626
Author(s):  
Ning Ping Wang ◽  
Hai Shan Tang ◽  
Lang Ping Xia ◽  
Si Chun Shao ◽  
Jie Zhu ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Flame Retardant ◽  
Synthesis And Characterization ◽  
Fire Retardancy ◽  
Chemical Structures ◽  
Charring Agent ◽  
Flame Retarded ◽  
Ft Ir

In this study, N,N-(2,4-diamino-1,3,5-triazinyl) diethylenetriamine were synthesized by cyanuric chloride, diethylenetriamine and ammonia with a novel process in three steps, and it can be used as charring agent in intumescent flame retardant. Its chemical structures were characterized by Fourier-transform infrared spectroscopy (FT-IR) and elemental analysis. Meanwhile, the TGA results showed that triazine-based charring agent had good thermostability. Furthermore, the fire performancce of composites blended by the flame retardant and polypropylene was investigated by vertical burning test. The results revealed good fire retardancy that flame retardant polypropylene with 5.1wt% charring agent, 2.8wt% anti-dripping and 20.1wt% APP, was reached UL-94 V-0 rating.

Infrared Spectroscopy Characterization of Marine Shells

2001 ◽  
Vol 711 ◽  
Author(s):  
Octavio Gomez-Martinez ◽  
Daniel H. Aguilar ◽  
Patricia Quintana ◽  
Juan J. Alvarado-Gil ◽  
Dalila Aldana ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Crassostrea Virginica ◽  
Thermal Treatments ◽  
Vibration Modes ◽  
Lattice Vibrations ◽  
Vibration Frequencies ◽  
Mussel Shells ◽  
Carbonate Lattice

ABSTRACTFourier Transform infrared spectroscopy has been employed to study the shells of two kind of mollusks, American oysters (Crassostrea virginica) and mussels (Ischadium recurvum). It is shown that it is possible to distinguish the different calcium carbonate lattice vibrations in each case, mussel shells present aragonite vibration frequencies, and the oyster shells present those corresponding to calcite. The superposition, shift and broadening of the infrared bands are discussed. Changes in the vibration modes due to successive thermal treatments are also reported.

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