Laser induced breakdown spectroscopy (LIBS) as a rapid tool for material analysis

6th Vacuum and Surface Sciences Conference of Asia and Australia

Hussain, T.^1 ; Gondal, M.A.^2

National Institute of Vacuum Science and Technology (NINVAST), PO Box 3125, Islamabad, Pakistan^1

Laser Research Laboratory, Physics Department, King Fahd University of Petroleum and Minerals (KFUPM), Box 5047, Dhahran 31261, Saudi Arabia^2

关键词: Elemental concentrations;    Environmental significance;    Laser generated plasmas;    Laserinduced breakdown spectroscopy (LIBS);    Optimal experimental conditions;    Plasma emission spectroscopy;    Quantitative measurement;    Solid and liquid samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/439/1/012050/pdf
DOI  :  10.1088/1742-6596/439/1/012050

来源: IOP

【 摘 要 】

Laser induced breakdown spectroscopy (LIBS) is a novel technique for elemental analysis based on laser-generated plasma. In this technique, laser pulses are applied for ablation of the sample, resulting in the vaporization and ionization of sample in hot plasma which is finally analyzed by the spectrometer. The elements are identified by their unique spectral signatures. LIBS system was developed for elemental analysis of solid and liquid samples. The developed system was applied for qualitative as well as quantitative measurement of elemental concentration present in iron slag and open pit ore samples. The plasma was generated by focusing a pulsed Nd:YAG laser at 1064 nm on test samples to study the capabilities of LIBS as a rapid tool for material analysis. The concentrations of various elements of environmental significance such as cadmium, calcium, magnesium, chromium, manganese, titanium, barium, phosphorus, copper, iron, zinc etc., in these samples were determined. Optimal experimental conditions were evaluated for improving the sensitivity of developed LIBS system through parametric dependence study. The laser-induced breakdown spectroscopy (LIBS) results were compared with the results obtained using standard analytical technique such as inductively couple plasma emission spectroscopy (ICP). Limit of detection (LOD) of our LIBS system were also estimated for the above mentioned elements. This study demonstrates that LIBS could be highly appropriate for rapid online analysis of iron slag and open pit waste.