New Ferrocene-Integrated Multifunctional Guanidine Surfactants: Synthesis, Spectroscopic Elucidation, DNA Interaction Studies, and DFT Calculations

2021 ◽  
Author(s):  
Sameen Nawaz ◽  
Faiza Asghar ◽  
Jahangeer Patujo ◽  
Saira Fatima ◽  
Babar Murtaza ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
13C Nmr ◽  
Atomic Absorption Spectroscopy ◽  
Analytical Methods ◽  
Dna Interaction ◽  
Interaction Studies ◽  
Ft Ir

Three new ferrocene-substituted aliphatic guanidines were successfully synthesized and well characterized by means of several analytical methods such as: FT-IR, 1H & 13C-NMR, Raman, atomic absorption spectroscopy (AAS), and elemental...

scholarly journals Catalyzed Reaction of Cellulose and Lignin with Methyltrimethoxysilane—FT-IR, 13C NMR and 29Si NMR Studies

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2006 ◽  
Author(s):  
Joanna Siuda ◽  
Waldemar Perdoch ◽  
Bartłomiej Mazela ◽  
Magdalena Zborowska
Keyword(s):  
Acetic Acid ◽  
Ir Spectra ◽  
Atomic Absorption ◽  
13C Nmr ◽  
Atomic Absorption Spectroscopy ◽  
Reaction Mechanisms ◽  
29Si Nmr ◽  
Nmr Studies ◽  
Nmr Techniques ◽  
Ft Ir

It can be found that reaction mechanisms and interactions between wood and organosilicone compounds have not been sufficiently explored. The aim of the study was to determine bonds formed between either cellulose or lignin and methyltrimethoxysilane (MTMOS) during a catalytic silanization reaction. Silanization was performed in the presence of two catalysts of a diverse mechanism of functionalization: aluminum acetylacetonate (Al(acac)3) and acetic acid (AcOH). For this purpose, FT-IR, 13C and 29Si NMR techniques were used. Cellulose silanization efficiency without a catalyst was unlikely. Lignin undergoes a silanization reaction with alkoxysilanes much easier than cellulose. The results showed new bonds between biopolymers and the silanising agent. The new bonds were confirmed by signals at the FT-IR spectra, e.g., 770 cm−1 and 1270 cm−1 (Si–CH3), and at the NMR signal coming from the T1, T2 and T3 structures. Efficiency of reaction was confirmed by atomic absorption spectroscopy (AAS) analysis.

scholarly journals Pengaruh Variasi Jenis Pelarut pada Rendemen Sintesis Senyawa Kompleks Bis-Asetilasetonatodiaquonikel(II)

2015 ◽  
Vol 18 (1) ◽  
pp. 29-33
Author(s):  
Novia Mintari ◽  
Suhartana Suhartana ◽  
Sriatun Sriatun
Keyword(s):  
Fourier Transform ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Infra Red ◽  
Ft Ir

Sintesis Senyawa Kompleks Bis-Asetilasetonatodiaquonikel(II)  telah dilakukan. Penelitian ini bertujuan untuk untuk mensintesis senyawa kompleks bis-asetilasetonatodiaquonikel(II) ([Ni(acac)2(H2O)2]) dengan menggunakan pelarut metanol, etanol dan aseton serta membandingkan pengaruh pelarut yang digunakan terhadap hasil sintesis senyawa kompleks. Senyawa kompleks [Ni(acac)2(H2O)2] dibuat dengan memodifikasi metode Pawlikowski dengan perbandingan mol ion pusat dengan ligan adalah 1:3. Karakterisasi senyawa kompleks dilakukan menggunakan Fourier Transform-Infra Red (FT-IR), Atomic Absorption Spectroscopy (AAS), dan Spektrofotometer UV-Vis. Hasil FTIR menunjukkan adanya gugus O pada asetil aseton yang terkoordinasi pada ion pusat Ni2+ membentuk kompleks [Ni(acac)2(H2O)2]. Spektra UV-Vis menghasilkan serapan maksimum untuk kompleks [Ni(acac)2(H2O)2] dalam pelarut metanol pada panjang gelombang 294,5 nm, dengan energi transisi sebesar 406,72 KJmol-1, dan rendemen 19,26%. Kompleks [Ni(acac)2(H2O)2] dalam pelarut etanol memiliki panjang gelombang maksimum pada 294,5 nm, dengan energi transisi sebesar 406,72 KJmol-1, dan rendemen 18,69%. Sedangkan kompleks [Ni(acac)2(H2O)2] dalam pelarut aseton mempunyai panjang gelombang maksimum pada 293 nm, dengan energi transisi sebesar 408,80 KJmol-1, dan rendemen 16,99%.

Elemental Analysis Using Atomic Absorption Spectroscopy

2021 ◽  
Vol 6 (7) ◽  
pp. 48-51
Author(s):  
Abdul Moiz Mohammed
Keyword(s):  
Trace Elements ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Thermal Energy ◽  
Elemental Analysis ◽  
Atomic Absorption Spectroscopy ◽  
Analytical Methods ◽  
Chemical Compound ◽  
Radiation Study ◽  
Powerful Means

The resonance radiation study is a powerful means in obtaining valuable information concerning the behavior of individual atoms and molecules. Various quantitative techniques are available in order to determine the amount of analyte and analysis of trace elements in the sample. Some technique uses the principle, when the number of atoms in the path of light increases, the amount of light absorption increases. While other techniques use dissociation of chemical compound free atoms by supplying enough thermal energy. In this paper, an attempt is made to compare various analytical methods with their merits and demerits and the reasons for popularity of atomic absorption spectroscopy among researchers. Elemental analysis using atomic absorption spectroscopy of various elements that are found in nature particularly in foods and environment is also presented.

scholarly journals Spectroscopic Studies of Aminoacids Complexes with Biometals

2012 ◽  
Vol 7 (1) ◽  
pp. 140-144
Author(s):  
Andreea Stanila ◽  
Sorin Stanila
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Metal Ion ◽  
Room Temperature ◽  
Water Solution ◽  
Spectroscopic Studies ◽  
Esr Spectra ◽  
Bidentate Ligands ◽  
Ft Ir

The [Cu(L)2]·H2O, [Co(L)2]·2H2O, [Zn(L)2]·H2O complexes with methionine (L) as ligand, were synthesized in water solution and analyzed by means of: elemental analysis, atomic absorption spectroscopy, thermogravimetry, FT-IR, UV-VIS and EPR spectroscopies. The atomic absorption spectroscopy and elemental measurements confi rm the ratio 1:2 metal ion: methionine composition for the synthesised compounds.The IR spectra show that amino acids act as bidentate ligands with coordination involving the carboxylic oxygen and the nitrogen atom of the amino group. Spectral UV-VIS data confi rmed the covalent metal-ligand bonds, the pseudotetrahedral symmetry around the copper and zinc ions and the octahedral environment for the cobalt ion. Powder ESR spectra at room temperature are typically for monomeric species.

DETERMINATION OF ARSENIC, CADMIUM, LEAD, COOPER AND ZINC IN DRINKING WATER FROM R. MACEDONIA

2018 ◽  
Vol 28 (4) ◽  
pp. 1259-1264
Author(s):  
Kiril Lisichkov ◽  
Katerina Atkovska ◽  
Neven Trajchevski ◽  
Orce Popovski ◽  
Nadica Todorovska
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Supply System ◽  
Water Supply System ◽  
Bottled Water ◽  
Cadmium Lead ◽  
The City

The presence of some chemical compounds at higher levels than maximum permissible concentrations (MPC) in the drinking water, suggests of water resources pollution. In this paper the following elements were analyzed: total arsenic, cadmium, lead, cooper and zinc. Twelve samples of water from the water supply system from the city of Skopje were examined during one year from three different springs. Also, ten samples of bottled water from three producers from the Macedonian market were tested.The determined average mass concentrations of total As, Cd(II), Pb(II), Cu(II) and Zn(II) in the analyzed water samples from the water supply system are 1.35 μg/l, 0.06 μg/l, 0.6 μg/l, 0.9 μg/l and 1,12 μg/l, respectively, and for the tested bottled water, the mean values ranges from 0.56 - 0.83 μg total As / l, 0.053 - 0.056 μg Cd(II)/l, 0.51 - 0.54 μg Pb(II)/l , 0.6 - 0.87 μg Cu(II)/l and 0.68 - 0.8 μg Zn(II)/l water.The following instrumental analytical methods and techniques were used for the analysis of the tested samples of drinking water: flame atomic absorption spectroscopy (AAS), atomic absorption spectroscopy with hydride cеll, electrothermal atomic absorption spectroscopy.The obtained results are shown in tables and graphic form. According to the obtained results a comparative analysis was carried out indicate that it is a water of good quality that can be used in different branches of the process industry.The obtained results in this paper do not exceed the values of the MPC of the Republic of Macedonia prescribed by the legal regulations for the drinking water, which confirm the health safety of the drinking water from the water supply system in the city of Skopje and the packed waters from the Macedonian market in relation to the tested elements.

Quantitative Estimation of Lead (Pb) and Cadmium (Cd) Content in Commonly Used Cosmeceuticals Using Atomic Absorption Spectroscopy

2016 ◽  
Vol 12 (3) ◽  
pp. 214-219 ◽  
Author(s):  
Arun K. Mishra ◽  
Amrita Mishra ◽  
Bentham Science Publisher Pragya ◽  
Pronobesh Chattopadhyay
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Quantitative Estimation

Acid Interferences in Indirect Determination of Silicon bt Atomic Absorption Spectroscopy (AAS)

1974 ◽  
Vol 7 (12) ◽  
pp. 627-635
Author(s):  
A. Radecki ◽  
H. Lamparczyk ◽  
J. Grzybowski ◽  
J. Halkiewicz
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Indirect Determination
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