Optimization of an analytical method for reducing the volume of radioactive waste generated during determination of uranium in presence of plutonium

2014 ◽  
Vol 303 (1) ◽  
pp. 631-636
Author(s):  
M. Suba ◽  
A. Nageswara Rao ◽  
P. Velavendan ◽  
N. K. Pandey ◽  
U. Kamachi Mudali ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Analytical Method

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

scholarly journals Rapid Analytical Method for the Determination of 220 Pesticide with Their Isomers by GCMS-TIC

2021 ◽  
Author(s):  
Mohamed H. EL-Saeid ◽  
Ashraf S. Hassanin ◽  
Abdulqader Y. Bazeyad ◽  
Norhan M. Hamza
Keyword(s):  
Analytical Method

Green analytical method for the determination of sofosbuvir, ledipasvir, ribavirin and complex silymarin flavonoids simultaneously in biological fluids

2021 ◽  
Vol 164 ◽  
pp. 105964
Author(s):  
Amira F. El-Yazbi ◽  
Yasmine Khalifa ◽  
Mohammed A.W. Elkhatib ◽  
Ahmed F. El-Yazbi
Keyword(s):  
Analytical Method ◽  
Biological Fluids

Analytical method for the simultaneous determination of a broad range of opioids in influent wastewater: Optimization, validation and applicability to monitor consumption patterns

Talanta ◽  
2021 ◽  
Vol 232 ◽  
pp. 122443
Author(s):  
Tim Boogaerts ◽  
Maarten Quireyns ◽  
Adrian Covaci ◽  
Hans De Loof ◽  
Alexander L.N. van Nuijs
Keyword(s):  
Simultaneous Determination ◽  
Analytical Method ◽  
Consumption Patterns ◽  
Influent Wastewater

A sensitive analytical method for the determination of SG-SP1 in rat plasma by HPLC-MS/MS and its application to a pharmacokinetic study

2021 ◽  
pp. 114151
Author(s):  
Juhyung Kang ◽  
Jihyun Won ◽  
Xiang Fei ◽  
Keumhan Noh ◽  
Sang-Hyun Kim ◽  
...  
Keyword(s):  
Pharmacokinetic Study ◽  
Analytical Method ◽  
Rat Plasma

scholarly journals Determination of Glycol Ethers in Ambient Air by Adsorption Sampling and Thermal Desorption with GC/MS Analysis: Performance Evaluation and Field Application

2012 ◽  
Vol 9 (2) ◽  
pp. 970-979
Author(s):  
Young-Kyo Seo ◽  
Sung-Ok Baek
Keyword(s):  
Thermal Desorption ◽  
Analytical Method ◽  
Ambient Air ◽  
Industrial Area ◽  
Field Application ◽  
Ambient Atmosphere ◽  
Glycol Ethers ◽  
Ms Analysis ◽  
Sampling Campaign

Some of glycol ethers, such as 2-methoxyethanol (2-ME) and 2-ethoxyethanol (2-EE) are known to be toxic and classified as hazardous air pollutants in USA, Japan and Germany. In Korea, however, there has been no study conducted so far for these compounds in ambient air. In addition, no clear methodologies for the measurement of glycol ethers have been yet established. We carried out this study to evaluate a sampling and analytical method for the determination of glycol ethers, in ambient air samples collected in specific industrial areas of South Korea. To measure glycol ethers, adsorption sampling and thermal desorption with GC/MS analysis were used in this study. The analytical method showed good repeatability, linearity and sensitivity. The lower detection limits were estimated to be approximately 0.3∼0.5 ppb. Based on storage tests, it was suggested that samples should be analyzed within two weeks. It was also demonstrated that this method can be used for the simultaneous measurement of glycol ethers and other aromatic VOCs such as benzene, toluene, and xylenes. Field sampling campaign was carried out at 2 sites, located in a large industrial area, from October 2006 to June 2007, and a total of 480 samples were collected seasonally. Among them, 2-ME was not detected from any samples, while 2-EE and 2-Ethyloxyethylacetate (2-EEA) were found in 7 and 70 samples, respectively. The measured concentrations of 2-EE and 2-EEA for samples were ranged from 0.7-2.5 ppb and from 0.5-10.5 ppb, respectively. To our knowledge, this is the first measurement report for glycol ethers in the ambient atmosphere not only in Korea but also the rest of the world.

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