Results 131 to 140 of about 21,988 (160)

Determination of trace phosphorus in zirconium–niobium alloy and Zircaloy by UV–vis spectrophotometry

Talanta, 2008
A spectrophotometric method has been developed for the determination of traces of phosphorus in zirconium based alloys (Zr-2.5Nb and Zircaloy). It is achieved by selective fluoride complexation controlled by boric acid. The samples were dissolved in HF and fluoro-complexes of the matrices were formed by maintaining the concentration of HF while the ...
S M, Dhavile, R, Shekhar, S, Thangavel, S C, Chaurasia, J, Arunachalam   +4 more
openaire   +2 more sources

Lead Quantification in Urine Samples of Athletes by Coupling DLLME with UV-Vis Spectrophotometry

Biological Trace Element Research, 2016
Urine lead level is one of the most employed measures of lead exposure and risk. The urine samples used in this study were obtained from ten healthy male cyclists. Dispersive liquid-liquid microextraction combined with ultraviolet and visible spectrophotometry was utilized for preconcentration, extraction, and determination of lead in urine samples ...
Hakim Faraji, Masoumeh Helalizadeh
openaire   +2 more sources

Derivative UV-VIS Spectrophotometry for Porphyrins Interactions in Photodynamic Therapy

Analytical Letters, 2010
Derivative spectrophotometry is an analytical technique of great utility for extracting both qualitative and quantitative information from spectra composed of unresolved bands by calculating and plotting one of the mathematical derivatives of a spectral curve.
openaire   +1 more source

UV-vis spectrophotometry for environmental and industrial analysis

2021
Gurpreet Kaur, Harminder Singh, Jandeep Singh   +2 more
openaire   +1 more source

INTEGRATING UV-VIS SPECTROPHOTOMETRY INTO FOOD QUALITY MANAGEMENT SYSTEM

Green transformation of agribusiness : innovation as the key to sustainable agriculture
UV-Vis spectrophotometry has become a common and very practical tool in food quality control because it is quick, simple to use, and sensitive enough for everyday analyses. With this technique, laboratories can easily check the levels of nutrients, colorants, additives, and natural pigments in different food products.
Kristina Tomska, Viktorija Stojkovski
openaire   +1 more source

[Rapid Determination of Dodecylmorpholine in Aqueous Solutions with UV-Vis Spectrophotometry].

Guang pu xue yu guang pu fen xi = Guang pu, 2018
A rapid UV-Vis spectrophotometric method was proposed to determine the concentration of DMP in aqueous solutions. The linear concentration range of DMP solution at the range of 250～400 nm is 0.5～70 mmol·L(-1). At 275 nm, the linear fitting equation is A=0.030 7c+0.133 0 with a correlation of 0.980 9.
Chao-ming, Quan, Yao-qiang, Hu, Hai-ning, Liu, Ming-zhen, Li, Xiu-shen, Ye, Zhi-jian, Wu   +5 more
openaire   +1 more source

An environmentally friendly and novel amine-based liquid phase microextraction of quercetin in food samples prior to its determination by UV–vis spectrophotometry

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2020
Mustafa Soylak, Erkan Yilmaz
exaly  

Ceftriaxone Degradation in the Presence of Sodium Halides Investigated by Electrochemical Methods Assisted by UV-Vis Spectrophotometry

Applied Sciences (Switzerland), 2021
Bogdan Tutunaru, Adriana Samide, Cristian Tigae   +2 more
exaly  

Application of UV–VIS spectrophotometry for chemical analysis

2020
openaire   +1 more source

Determination of Phosphorus in feeds and fodder by UV-VIS spectrophotometry.

2022
openaire   +1 more source