Sample interview questions: Can you explain the concept of laser-induced breakdown detection and its significance in elemental analysis?
Sample answer:
Laser-Induced Breakdown Detection (LIBD)
LIBD is a powerful analytical technique that utilizes a high-intensity laser to induce a plasma in a sample. The plasma emits light containing spectral lines corresponding to the elemental composition of the sample. This light is analyzed using a spectrometer to identify and quantify the elements present.
Significance in Elemental Analysis
LIBD offers several advantages for elemental analysis:
- Remote and In-Situ Analysis: LIBD can analyze samples from a distance or directly within their environment, eliminating the need for sample preparation or contamination.
- Multi-Element Detection: LIBD provides simultaneous detection of multiple elements, enabling comprehensive elemental profiling.
- Quantitative Analysis: The intensity of spectral lines is proportional to the concentration of the corresponding element, allowing for quantitative analysis.
- High Sensitivity: LIBD is highly sensitive and can detect elements at trace levels.
- Rapid Analysis: LIBD analyses can be performed in a matter of seconds or minutes, making it suitable f… Read full answer