Laser Induced Luminescence Method for the determination of Soluble Uranium in Surface Soil

2013 ◽  
Vol 1 (5) ◽  
pp. 67 ◽  
Author(s):  
P. P. Prasad ◽  
Keyword(s):  
Surface Soil ◽  
Luminescence Method

Sorption-luminescence method for determination of cerium using Transcarpathian clinoptilolite

2021 ◽  
Author(s):  
Volodymyr O. Vasylechko ◽  
Halyna P. Sak ◽  
Galyna V. Gryshchouk ◽  
Andrei Gloskovskii ◽  
Yaroslav M. Kalychak ◽  
...  
Keyword(s):  
Luminescence Method

scholarly journals A Terbium Sensitized Luminescence Method for the Assay of Flubiprofen in Pharmaceutical Formulations

2014 ◽  
Vol 19 (1) ◽  
pp. 54
Author(s):  
Salma M.Z. Al-Kindy ◽  
Arwa Al-Ghazali ◽  
Fakhr Eldin O. Suliman ◽  
Haidar A.J. Al-Lawati
Keyword(s):  
Limit Of Detection ◽  
Tap Water ◽  
Pharmaceutical Formulations ◽  
Aqueous System ◽  
Tween 20 ◽  
Luminescence Method ◽  
Time Resolved ◽  
Relative Standard ◽  
Excellent Reproducibility

A sensitive time-resolved luminescence method for the determination of flubiprofen (FLP) in methanol and in aqueous solution is described. The method is based on the luminescence sensitization of terbium (Tb3+ ) by the formation of a ternary complex with FLP in the presence of 4,7 diphenyl 1,10 phenanthroline (DPP) as co-ligand, and Tween-20 as surfactant. The signal for Tb-FLP-DPP was monitored at λex  = 285 nm and λem  = 552 nm. Optimum conditions for the formation of the complex in an aqueous system were TRIS buffer, pH 8.0, DPP (2.5Å~10−7  M), Tween-20 (0.30%) and 4Å~10-5  mol L-1  of Tb3+  which allowed the determination of 20–1000 ng mL-1  of FLP with a limit of detection (LOD) of 10 ng mL-1 . The relative standard deviations of the method ranged between 0.6 and 1.4% indicating excellent reproducibility of the method. The proposed method was successfully applied for the assays of FLP in pharmaceutical formulations and spiked tap water samples with average recoveries of 87% – 95%. 

Determination of Lead Contamination in Urban Soil, Yogyakarta City, Indonesia

2016 ◽  
Vol 842 ◽  
pp. 473-477
Author(s):  
Saw Aung Zaw Aye ◽  
Heru Hendrayana ◽  
Doni Prakasa Eka Putra ◽  
Tsutomu Sato
Keyword(s):  
Urban Area ◽  
Urban Soil ◽  
Surface Soil ◽  
Lead Contamination ◽  
Soil Lead ◽  
Average Value ◽  
Quality Of Water ◽  
Yogyakarta City

Lead (Pb) is one of common heavy metal that has been shown to be very useful tracers of environmental pollution. The consequences of urbanization process can cause not only economic growth but also negatively impact on the quality of water and soil. Therefore the objective of this research is to know the potential contamination of lead in soil of urban area. The soil samples were conducted by batch leaching experiment. In surface soil, lead in soil of Pakem area varies from 2.01ppm to 5.13 ppm with average value of 3.02 ppm and Merapi area ranges from 1.84 ppm to 3.41ppm with average value of 2.42 ppm. In urban area, lead varies from 4.18 to 14.88 ppm with average of 9.93 ppm. Lead in urban soil is higher than Pakem and Merapi soil. The potential contamination of lead in urban soil is occurred with respect to urbanization and human activities. The value of lead is shown with the average of 3 ppm for Caturtunggal, Depok District, 6.53 ppm in Mantrijeron District and 9.82 ppm for Kotagede District in Yogyakarta city. The result of lead distribution in Kotagede District is the highest concentrated and it is followed by Mantrijeron District and Caturtunggal, Depok District.

A simple method for determination of natural and depleted uranium in surface soil samples

2010 ◽  
Vol 68 (7-8) ◽  
pp. 1433-1434 ◽  
Author(s):  
I. Vukanac ◽  
D. Novković ◽  
A. Kandić ◽  
M. Djurašević ◽  
Z. Milošević
Keyword(s):  
Surface Soil ◽  
Soil Samples ◽  
Depleted Uranium ◽  
Simple Method

Use of the luminescence method for determination of adrenaline and noradrenaline in living organisms

1969 ◽  
Vol 11 (4) ◽  
pp. 1242-1243
Author(s):  
A. A. Zaitseva ◽  
A. N. Pertsev ◽  
I. V. Reznikov ◽  
S. N. Cherenkevich
Keyword(s):  
Luminescence Method ◽  
Living Organisms
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