Determination of radium by radon emanation after EDTA-mediated sample dissolution

2015 ◽  
Vol 306 (2) ◽  
pp. 445-449 ◽  
Author(s):  
Ioanna Liatsou ◽  
Ioannis Pashalidis
Keyword(s):  
Radon Emanation ◽  
Sample Dissolution

scholarly journals Determination of Arsenic, Chromium and Lead in titanium dioxide pigments by ICP- OES with Concomitant Metals Analyser

2019 ◽  
pp. 296-305
Author(s):  
Beena Sunilkumar ◽  
S. B. Singh
Keyword(s):  
Titanium Dioxide ◽  
Matrix Effects ◽  
Mineral Acid ◽  
Icp Oes ◽  
Acid Decomposition ◽  
Simple Method ◽  
Sample Dissolution ◽  
The Matrix ◽  
Generating System

A simple method has been developed for the determination of trace toxic elements like arsenic, lead and chromium in titanium dioxide pigment samples by ICP OES attached with a Concomitant Metals Analyser. Open mineral acid decomposition was used for sample dissolution employing a mixture of nitric and hydrofluoric acids. The continuous online generation of hydrides into the plasma was achieved through a concomitant metals analyser. The recovery of arsenic, lead and chromium and the matrix effects of titanium on these elements have been studied with spiking experiments. The proposed method has been successfully applied to the determination of arsenic and other elements in titanium pigment samples. The continuous hydride generating system, Concomitant Metals Analyser (CMA) improved the sensitivity of analysis nearly five times in pigment samples. The precision of the measurements was found to be less than 10% RSD.

Determination of the radon emanation fraction from rocks by simple gamma-ray spectrometry

2018 ◽  
Vol 316 (3) ◽  
pp. 1307-1312 ◽  
Author(s):  
Kil Yong Lee ◽  
Sang Ho Moon ◽  
Yong Hwa Oh ◽  
Kyucheol Ha ◽  
Kyung Seok Ko
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Radon Emanation ◽  
Emanation Fraction

scholarly journals A Liquid Chromatographic Method for Routine Analysis of 5-Mononucleotides in Pediatric Formulas

2010 ◽  
Vol 93 (3) ◽  
pp. 966-973 ◽  
Author(s):  
Brendon D Gill ◽  
Harvey E Indyk ◽  
Maureen C Kumar ◽  
Nathan K Sievwright ◽  
Merilyn Manley-Harris
Keyword(s):  
Bovine Milk ◽  
Internal Standard ◽  
Standard Technique ◽  
Gradient Elution ◽  
Hplc Method ◽  
Routine Analysis ◽  
Liquid Chromatographic Method ◽  
Sample Dissolution ◽  
Liquid Chromatographic

Abstract An RP-HPLC method for the routine determination of supplemented 5-mononucleotides (uridine 5-monophosphate, inosine 5-monophosphate, adenosine 5-monophosphate, guanosine 5-monophosphate, and cytidine 5-monophosphate) in pediatric formulas and milk products is described. Following sample dissolution, potential interferences were removed by anion-exchange SPE. Chromatographic analyses were performed using a C18 stationary phase with gradient elution, UV detection, and quantitation by an internal standard technique. A single-laboratory validation was performed, with recoveries of 92101 and repeatability RSDs of 1.02.3. The method was optimized for the rapid, routine analysis of nucleotide-supplemented bovine milk-based infant and follow-on formulas.

Determination of inorganic arsenic in white fish using microwave-assisted alkaline alcoholic sample dissolution and HPLC-ICP-MS

2004 ◽  
Vol 381 (2) ◽  
pp. 339-346 ◽  
Author(s):  
Erik H. Larsen ◽  
Joakim Engman ◽  
Jens J. Sloth ◽  
Marianne Hansen ◽  
Lars Jorhem
Keyword(s):  
Inorganic Arsenic ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Sample Dissolution

Determination of Ruthenium in Waste Ruthenium-Loaded Carbon Catalyst Samples Using Teflon Pressure Vessel-Assisted Sample Digestion and ICP-OES

2014 ◽  
Vol 1015 ◽  
pp. 570-573
Author(s):  
Xiao Juan Wei ◽  
Jian Ming Pan
Keyword(s):  
Inductively Coupled Plasma ◽  
Limit Of Detection ◽  
Optical Emission ◽  
Calibration Graph ◽  
Emission Spectrometry ◽  
Carbon Catalyst ◽  
Inductively Coupled ◽  
Relative Standard ◽  
Sample Dissolution

A novel method for the determination of ruthenium in waste ruthenium-loaded carbon catalyst samples was established by inductively coupled plasma optical emission spectrometry after samples digested by Teflon pressure digestion vessel with aqua regia. Such experiment conditions were investigated as the influence of sample dissolution methods, digestion time, digestion temperature and interfering ions on the determination. Under the optimized conditions, the limit of detection (LODs) of Ru for tested solution was 9 ng mL-1. The relative standard deviations (RSDs) for Ru was 2.12 % (CRu= 1 mg L-1, n = 7). The linear range of calibration graph for Ru and Zn was 0 ~ 100.00 mg L-1. The proposed method was applied to determine the practical samples with good recoveries and satisfactory results.

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