| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1239725 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2013 | 7 Pages |
Methods based on laser ablation, such as Laser-Induced Breakdown Spectroscopy (LIBS) and Laser-Ablation Inductively Coupled Plasma Mass/Optical Emission Spectrometry (LA-ICP-MS/OES) are particularly suitable for urinary calculi bulk and micro analysis. Investigation of spatial distribution of matrix and trace elements can help to explain their emergence and growth. However, quantification is still very problematic and these methods are often used only for qualitative elemental mapping. There are no commercially available standards, which would correspond to the urinary calculi matrix. Internal standardization is also difficult, mainly due to different crystalline phases in one kidney stone.The aim of this study is to demonstrate the calibration capabilities and examine the limitations of laser ablation based techniques. Calibration pellets were prepared from powdered human urinary calculi with phosphate, oxalate and urate matrix. For this comparative study, the most frequently used laser-ablation based analytical techniques were chosen, such as LIBS and LA-ICP-MS. Moreover, some alternative techniques such as simultaneous LIBS–LA-ICP-OES and laser ablation LA-LIBS were also utilized.
► In this study we compare several laser-ablation based analytical techniques. ► The aim is to prove the calibration capabilities and limitations of these methods. ► Calibration pellets were prepared from human urinary calculi. ► Simultaneous LIBS–LA-ICP-OES, LA-ICP-MS and LA-LIBS were utilized.
