Spectrometric identification of organic compounds on a milligram scale

Silverstein, Robert M.; Rodin, J. O.

doi:10.1016/0026-265x(65)90049-4

Cited by 48 publications

(75 citation statements)

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“…The Fourier Transform Infrared Spectrophotometer (FTIR) of dried spinach and fenugreek leaves (composite sample of 4 replicates) was carried out to study the functional groups [ 32 , 43 ]. It involves the following steps; 1.…”

Section: Methodsmentioning

confidence: 99%

“…Short-wavelength shoulders indicate the presence of high aggregates in aliphatic hydrocarbons [ 31 ]. The absorption peak at 1695 cm -1 reflects the free ketone carbonyl absorption and ester carbonyl absorption is found at 1735 cm -1 ; however, this is not differentiated from the 1650–1660 cm -1 aggregation peak [ 29 , 32 ]. Similarly, the absorption peak at 1695 cm -1 is considered a consequence of a small amount of free carbonyl in the absorbing species [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

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Fourier Transform Infrared Spectroscopy vibrational bands study of Spinacia oleracea and Trigonella corniculata under biochar amendment in naturally contaminated soil

Younis

Rahi²,

Danish

et al. 2021

PLoS ONE

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Fourier transform infrared spectroscopy (FTIR) spectroscopy detects functional groups such as vibrational bands like N-H, O-H, C-H, C = O (ester, amine, ketone, aldehyde), C = C, C = N (vibrational modes of a tetrapyrrole ring) and simply C = N. The FTIR of these bands is fundamental to the investigation of the effect of biochar (BC) treatment on structural changes in the chlorophyll molecules of both plants that were tested. For this, dried leaf of Spinacia oleracia (spinach) and Trigonella corniculata (fenugreek) were selected for FTIR spectral study of chlorophyll associated functional groups. The study’s primary goal was to investigate the silent features of infrared (IR) spectra of dried leave samples. The data obtained from the current study also shows that leaf chlorophyll can mask or suppress other molecules’ FITR bands, including proteins. In addition, the C = O bands with Mg and the C9 ketonic group of chlorophyll are observed as peaks at1600 (0%BC), 1650 (3%BC) and 1640, or near to1700 (5%BC) in spinach samples. In fenugreek, additional effects are observed in the FTIR spectra of chlorophyll at the major groups of C = C, C = O and C9 of the ketonic groups, and the vibrational bands are more evident at C-H and N-H of the tetrapyrrole ring. It is concluded that C-N bands are more visible in 5% BC treated spinach and fenugreek than in all other treatments. These types of spectra are useful in detecting changes or visibility of functional groups, which are very helpful in supporting biochemical data such as an increase in protein can be detected by more visibility of C-N bands in FTIR spectra.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fourier Transform Infrared Spectroscopy vibrational bands study of Spinacia oleracea and Trigonella corniculata under biochar amendment in naturally contaminated soil

Younis

Rahi²,

Danish

et al. 2021

PLoS ONE

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“…All the spectra were collected in the range of 400-4000 cm À1 wavenumber at a scanning rate of 400 nm min À1 . 34 The particle size and zeta-potential of insHAP were detected under water using a zeta-sizer (Malvern, Worcestershire, UK) operated at 10-70 C (AE0.1 C). The detected range of particle size was between 2 nm and 8 mm.…”

Section: Materials Characterization and Analysismentioning

confidence: 99%

Insulin-loaded hydroxyapatite combined with macrophage activity to deliver insulin for diabetes mellitus

et al. 2015

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“…The first group includes samples 4, 5, and 6. A feature of their IR spectra is the presence of absorption bands in the region close to the absorption bands of petroleum jelly:~1480 δ as (CH 3 ), δ (CH 2 ) and~1420 cm −1 δ s (CH 3 ), as well as bands at 876-878 and 856-858 cm −1 , characteristic of vibrations of the Si-C bond, for example, in the Si-CH 2 and Si-CH 3 groups [15][16][17].…”

Section: Figure 11 X-ray Diffractograms Of the Studied Samples (Numbers According To Table 1)mentioning

confidence: 99%

“…In modern materials science, studies of natural composite organosilicon biominerals are in demand to create new structural functional biomimetic materials. The remarkable body structure of sea sponges serves as a model for biomimetic structure for tissue engineering applications [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. The most common biomimetic approach, in which the object is previously disassembled into its constituent components.…”

Section: Introductionmentioning

confidence: 99%

Silicon Compounds in Sponges

et al. 2021

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A comparative study of the microscopic morphology and chemical characteristics of spicules of Hexactinellids (Hexactinellida) with different structural features of the skeletons, as well as the freshwater Baikal sponge belonging to the class of common sponges (Demospongia), was carried out. The trace element composition of sponge spicules was determined by X-ray fluorescence spectrometry. The spicules of siliceous sponges contain many elements, arranged in decreasing order of concentration: Si, Ca, Fe, Cl, K, Zn, and others. It was shown that the surface layer of sea sponges contains mainly carbon (C), oxygen (O), and to a lesser extent nitrogen (N), silicon (Si), and sodium (Na). The spicules of the studied siliceous sponges can be divided into two groups according to the phase composition, namely one containing crystalline calcium compounds and one without them. Analysis of infrared absorption spectra allows us to conclude that the sponges Euplectella aspergillum, E. suberia and Dactylocalyx sp. contain silica partially bound to the organic matrix, while the silica skeleton of the sponges of the other group (Schulzeviella gigas, Sericolophus sp., Asconema setubalense, Sarostegia oculata, Farrea sp. and Lubomirskia baicalensis sp.) practically does not differ from the precipitated SiO2. This comparative study of the chemical composition of the skeletons of marine Hexactinellids and common freshwater sponge allows us to conclude that there are no fundamental differences in the chemical composition of spicules, and all of them can be used as a starting material for creating new composite silicon–organic functional materials.

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Spectrometric identification of organic compounds on a milligram scale

Cited by 48 publications

References 1 publication

Fourier Transform Infrared Spectroscopy vibrational bands study of Spinacia oleracea and Trigonella corniculata under biochar amendment in naturally contaminated soil

Fourier Transform Infrared Spectroscopy vibrational bands study of Spinacia oleracea and Trigonella corniculata under biochar amendment in naturally contaminated soil

Insulin-loaded hydroxyapatite combined with macrophage activity to deliver insulin for diabetes mellitus

Silicon Compounds in Sponges

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