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

作者：Vaculovic Tomas; Otruba Vitezslav; Matal Oldrich; Kanicky Viktor^*

来源：Chemical Papers, 2011, 65(5): 620-625.

DOI：10.2478/s11696-011-0054-x

• ICP-OES
• laser ablation
• molten sodium

New 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 (300-600A degrees C). After exposition to CO(2), 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 Na(2)B(4)O(7) center dot 10H(2)O) 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.

• 出版日期2011-10