Jewellery. Determination of platinum in platinum jewellery alloys. ICP-OES method using yttrium as internal standard element

2014 ◽  
Keyword(s):  
Internal Standard ◽  
Icp Oes ◽  
Standard Element ◽  
Internal Standard Element

Determination of carbon in solidified sodium coolant using new ICP-OES methods

2011 ◽  
Vol 65 (5) ◽  
Author(s):  
Tomáš Vaculovič ◽  
Vítězslav Otruba ◽  
Oldřich Matal ◽  
Viktor Kanický
Keyword(s):  
Inductively Coupled Plasma ◽  
Internal Standard ◽  
Optical Emission ◽  
Sample Surface ◽  
Bulk Sample ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Carbon Dioxide Reaction

AbstractNew methods for the determination of carbon in sodium using laser ablation inductively coupled plasma optical emission spectrometry (LA-ICP-OES) and ICP-OES with pneumatic nebulisation (PN-ICP-OES) were developed. The determination was required for the study of the carbon dioxide reaction with molten sodium at high temperatures (300–600°C). After exposition to CO2, the solidified sodium sample was subjected to direct solid analysis by LA-ICP-OES and to solution analysis. For the determination of carbon in the sodium sample surface layer by LA-ICP-OES, three different matrices containing sodium were tested (NaCl, NaF, and Na2B4O7 · 10H2O) as calibration pellets. The calibration dependences were improved using sodium as the internal standard. Average carbon content in the sodium bulk sample was determined by PN-ICP-OES after the sample dissolution by water vapour.

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