Introduction
A. A variety of samples such as organic and inorganic substances in liquid, powder, film or solid form can be measured.
The optimal combination of the Palmtop Raman spectrometer and an optional accessory allows measurements to be performed in accordance with the type of sample. In this report, we describe measurement examples for liquid, powder, film, and solid samples using the Z-stage unit (Figure 1), a highly versatile optional accessory.
Fig. 1 Z-stage unit
Table 1 Measurement method for different types of sample
| Liquid/Powder | A liquid/powder holder for trace amounts of samples was used (Fig. 2 a). By fitting the tip of the guide into the rounded concave depression in the well of the holder, a sample can be positioned directly under the objective lens, eliminating the need for detailed sample position adjustment. |
| Film/Solid | A sample plate made of a metal that does not emit fluorescence signals was used (Fig. 2 b). This allows measurements of light-transmitting samples such as transparent films without any influence of the plate. |
Fig. 2 a) Liquid/powder holder b) Sample plate
Figure 3 shows measurement results for four samples: a) liquid oleic acid, b) talc powder, c) polypropylene film, and d) solid sapphire glass. Regardless of the sample type, spectra could be obtained that are sufficient for qualitative analysis.
Fig. 3 Spectra of different types of sample
