- #1
Farah Ikram
- 3
- 0
my question is why oxygen lines does not appear in metal oxides spectrum taken at 532nm wavelength of Nd:YAG laser at atmospheric pressure. and what is the criteria for selecting emission lines for analysis?
Laser Induced Breakdown Spectroscopy (LIBS) is an analytical technique used to identify and quantify the elemental composition of a sample. It involves focusing a high-powered laser onto the sample, which causes the sample to emit light. This light is then collected and analyzed to determine the elements present in the sample.
In LIBS, a high-powered laser is focused onto a small area of the sample. The intense heat from the laser vaporizes the sample, creating a plasma. This plasma emits light at various wavelengths, which can be analyzed to determine the elemental composition of the sample.
LIBS has several advantages, including its ability to analyze a wide range of sample types, its non-destructive nature, and its fast analysis time. It also does not require any sample preparation, making it a convenient and cost-effective technique.
LIBS has a variety of applications in fields such as environmental monitoring, material analysis, and forensics. It can be used to analyze the composition of rocks, identify pollutants in water and soil, and even detect the presence of hazardous materials.
One limitation of LIBS is its inability to detect elements that have a low atomic number, such as hydrogen and helium. It also has difficulty in distinguishing between elements with similar atomic masses. Additionally, the accuracy of LIBS can be affected by factors such as sample matrix and laser intensity.