Ablační komora pro simultánní DP-LIBS a Laserovou ablaci ve spojení s ICP-OES/MS

Ablation Chamber for Simultaneous DP-LIBS and Laser Ablation ICP-OES/MS

abstrakt

en

A special interaction chamber was designed to be compatible with the New Wave UP MACRO Laser Ablation System and to fulfill all demands for simultaneous measurements double pulse laser-induced breakdown spectroscopy (DP-LIBS) and laser ablation coupled to ICP optical emission or mass spectrometry. For single pulse LIBS only two orthogonal fused silica windows are used, the first from the top for the ablation laser beam and the second one from the front for collecting the light of plasma. For DP-LIBS the third window from the side is needed being orthogonal to the previous two. For Laser ablation ICP OES/MS a flow of transporting gas has to be implemented. The inner space of the chamber was optimized for low volume and quick flush of gas, which is crucial for the method. The gas enters the chamber through three oblique jets on the top and leaves to the ICP on the back side. The chamber is equipped with a vertically adjustable sample holder to adapt various sample heights and exchangeable inner rings allowing to various sample diameters to be altered and to minimize the inner volume.

Speciální ablační komora byla navržena tak, aby splňovala veškeré požadavky pro provedení simultánního měření technikou dvoupulzní spektroskopie laserem buzeného plazmatu DP-LIBS a laserové ablace ve spojení s optickou nebo hmotností spektrometrií indukčně vázaného plazmatu a současně byla plně kompatibilní s komerčním ablačním systémem firmy New Wave – UP 266 MACRO. Pro techniku jednopulzní LIBS spektrometrie jsou využívána pouze dvě na sebe kolmé okénka komory: první pro vstup ablačního laseru a druhé pro sběr záření laserem buzeného mikroplazmatu. Pro dvoupulzní techniku je zapotřebí třetí okénko pro vstup dalšího laserového pulzu, používaného pro reexcitaci laserem buzeného mikroplazmatu. Pro techniku LA-ICP-OES/MS je komora proplachována nosným plynem. Vnitřní objem komory byl optimalizován s ohledem na co nejrychlejší a nejefektivnější proplachování komory. Komora je dále vybavena posuvným stolkem pro přesné nastavení polohy vzorku.

A special interaction chamber was designed to be compatible with the New Wave UP MACRO Laser Ablation System and to fulfill all demands for simultaneous measurements double pulse laser-induced breakdown spectroscopy (DP-LIBS) and laser ablation coupled to ICP optical emission or mass spectrometry. For single pulse LIBS only two orthogonal fused silica windows are used, the first from the top for the ablation laser beam and the second one from the front for collecting the light of plasma. For DP-LIBS the third window from the side is needed being orthogonal to the previous two. For Laser ablation ICP OES/MS a flow of transporting gas has to be implemented. The inner space of the chamber was optimized for low volume and quick flush of gas, which is crucial for the method. The gas enters the chamber through three oblique jets on the top and leaves to the ICP on the back side. The chamber is equipped with a vertically adjustable sample holder to adapt various sample heights and exchangeable inner rings allowing to various sample diameters to be altered and to minimize the inner volume.

DP-LIBS; Laser ablation; ICP-OES/MS; ablation chamber

30.09.2012

book of abstracts of SCIX, 2012, September 30 – October 5, 2012, Kansas City, MO, USA

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