Results 41 to 50 of about 21,988 (160)

STUDI PERBANDINGAN ANALISIS VITAMIN E MINYAK SAWIT MERAH TERSAPONIFIKASI ANTARA METODE SPEKTROFOTOMETRI UV-VIS DAN KCKT

Kovalen: Jurnal Riset Kimia, 2017
A research about a comparative study of spectrophotometry UV-Vis and HPLC method for the analysis of vitamin E in saponified red palm oil has been done.
Arlina Mayharty Andulaai, Ruslan Ruslan, Hardi Ys., Dwi Juli Puspitasari   +3 more
doaj  

Biosynthesis of Silver Nanoparticles using Cinnamon zeylanicum Plants Bark Extract

Kufa Journal for Veterinary Medical Sciences, 2016
Nanoparticles are a special group of materials with unique features and extensive applications in diverse fields. The use of nanoparticles of some metals is common and useful in several fields due to the good properties of these nanoparticles.
Ali H. Saliem, Orooba M.S. Ibrahim, Sarwa Ibrahim Salih   +2 more
doaj   +1 more source

Identificação e quantificação do cristal violeta em aguardentes de mandioca (tiquira) Identification and characterization of crystal violet in cassava spirits (tiquira)

Química Nova, 2005
Tiquira is a traditional homemade alcoholic distillate produced in the Maranhão State (Brazil), gotten from cassava (Manihot esculenta, Crantz.). It can be normally found on street markets.
Geraldino da Silva Santos, Edmar Pereira Marques, Hildo Antônio dos Santos Silva, Cícero Wellington Brito Bezerra, Aldaléa Brandes Marques   +4 more
doaj   +1 more source

Albumin Identification in Catfish ( Clarias sp ) Using Spectrophotometry UV-VIs

Ad-Dawaa : Journal of Pharmacy, 2023
Albumin is a simple protein with globular protein molecules. Albumin is water soluble and can be coagulated with heat. Albumin solution in water can be precipitated by adding ammonium sulfate until saturated. Albumin functions to regulate the osmotic pressure in the blood, maintain the presence of water in the blood plasma so that it can maintain the ...
Perti Fitriani, Davit Nugraha
openaire   +1 more source

[The examination of peat preparations by the UV-VIS absorption spectrophotometry].

Roczniki Panstwowego Zakladu Higieny, 2008
For the testing of natural peat extracts and preparations produced from them absorbance measurements in the range lambda = 200--800 nm were used. The progressive increase of absorption spectra from 450 nm to short waves was observed. The curve calibration was rectilinear in a solution of humus acid (commercial preparation) when lambda = 420 nm.
Michał, Drobnik, Teresa, Latour, Beata, Krawczyk   +2 more
openaire   +1 more source

FORMULA ESTABLISHMENT OF COLORLESS Pb(II) COMPLEX WITH N-BENZOYL-N-PHENYL HYDROXYLAMINE (BPA) USING ATOMIC ABSORPTION SPECTROSCOPY

Indonesian Journal of Chemistry, 2012
A new method for determination of stoichiometry of colorless complexes by using atomic absorption spectrophotometric technique in continuous variation method and slope ratio method was described here.
Dhananjay B Sarode, Sopan T Ingle, Sanjay B Attarde   +2 more
doaj   +1 more source

PROPOSTA EXPERIMENTAL DIDÁTICA PARA O ENSINO DE ANÁLISE DE COMPONENTES PRINCIPAIS

Química Nova, 2016
Principal component analysis (PCA) is a chemometric method that allows for the extraction of chemical information that would otherwise be impossible to determine.
Leonardo Valderrama, Vassula Belinato Paiva, Paulo Henrique Março, Patrícia Valderrama   +3 more
doaj   +1 more source

Kinetic Spectrophotometric Method for the 1,4-Diionic Organophosphorus Formation in the Presence of Meldrum′s Acid: Stopped-Flow Approach

Molecules, 2016
The kinetics of the reaction between triphenylphosphine (TPP) and dimethyl acetylenedicarboxylate (DMAD) in the presence of Meldrum’s acid (MA) for the generation of the 1,4-diionic organophosphorus compound has been investigated using the stopped-flow ...
Fatemeh Ghodsi, Sayyed Mostafa Habibi-Khorassani, Mehdi Shahraki   +2 more
doaj   +1 more source

PENETAPAN KADAR FLAVONOID EKSTRAK TERPURIFIKASI UMBI BAWANG DAYAK (Eleutherine palmifolia (L). Merr) SECARA SPEKTROFOTOMETRI

JIIS: Jurnal Ilmiah Ibnu Sina, 2019
Eleutherine palmifolia (L) Merr. is one of the plant that has function as medicine. One of the compound which much contained in ethanol extract of dayak union is flavonoid, so that could separate with purification.
Siti Jubaidah, Eka Siswanto, Heri Wijaya, Muhammad Putu Aditya   +3 more
doaj  

Applications of Spectroscopy in Veterinary Clinical Analysis—Literary Review

Proceedings
Introduction: UV–Vis spectrophotometry is a central technique in veterinary diagnostics, enabling quantification of biomolecules such as glucose, proteins, and creatinine, as well as minerals and pharmaceuticals [...]
Thiago R. Silva, Lavinia M. Barbosa, Rômulo D. A. Andrade, Eduarda S. Fabri, Maria H. R. Marques, Heitor A. B. da Silva   +5 more
doaj   +1 more source