There are two main categories of spectrometry:辐射光谱和质谱.
弥撒spectrometryallows the molecular structure of a gas to be analyzed by ionization.
The main selection criteria for your spectrometer should be:
- Sensitivity and detection limit
- Wavelength range
If you need to analyze the color of a sample, you will need a spectrometer covering the visible spectrum, between 360 and 740 nm.
- Resolution (the ability of the spectrometer to distinguish between two wavelengths close together)
If the sample spectrum has sharp peaks separated by a distance of at least 0.5 nm, you will need a spectrometer with a resolution of at least 0.5 nm.
- The overall size of the equipment, especially if it will need to be transportable
- The analysis speed
- The signal-to-noise ratio