There are many types of spectrometers, including ICP spectrometers, namely inductively coupled plasma emission spectrometers, atomic fluorescence spectrometers, XRF spectrometers (X-ray spectrometers), atomic absorption, Raman spectroscopy, photoelectric direct-reading spectrometers, etc. about sixteen. Can be selected according to actual needs.
Both direct reading spectrometer and ICP spectrometer are atomic emission spectrometers, and are the most commonly used analytical instruments at present, but there are still big differences between these two instruments, although there are many similarities in principle and instrument design.
Regarding the difference between inductively coupled plasma spectrometer and photoelectric direct reading spectrometer, there are mainly the following points.
1. Both direct reading spectrometer and ICP are emission spectrum analysis instruments, the difference lies in their different excitation methods;
2. The Chinese name of ICP is inductively coupled plasma. It uses the coil magnetic field to reach a high temperature to make the state of the sample plasma and then measure it. Ordinary direct reading spectrometers generally use electric spark, arc or glow discharge to beat the sample. Excitation into steam; ICP spectrometer can measure the entire surface.
3. In terms of effect, the ICP spectrometer has smaller detection limits and higher accuracy than ordinary direct-reading spectrometers, but the requirements on the sampling system are very strict. Without a good sampling system, only solution samples can be made. Foreign advanced ICP can Make solid samples. The direct reading spectrometer can only measure one point because it is excited at a certain point.
4. The direct-reading spectrometer can directly inject solid samples, so the test results can be quickly obtained. This is indispensable for the analysis in front of the furnace and is an irreplaceable ICP spectrometer.
5. The direct-reading spectrometer is mainly used in metallurgy, while the ICP spectrometer can be used in almost all walks of life.
6. Direct reading is mainly used for the analysis in front of the metal smelting furnace, and the content of impurities is usually high. ICP spectrometer is mainly used for the analysis of trace elements.
7. The ICP spectrometer on the substrate cannot do C, N and other elements, but the direct reading spectrometer can
8. Direct reading spectroscopy is the direct detection of solid sample injection; while ICP requires pre-processing, the sample is processed into a solution and then injected. If there are many types of samples, there will be many channels for matching, and the price will be very high. With ICP, there will be no channels. It is just that the sample needs to be pre-processed into a solution before the sample can be injected. The ease of pre-processing depends on the sample. Different but different.
9. In addition, the direct-reading spectrometer uses the matrix as the internal standard. In fact, it is to facilitate the correction of the influence of the system error. The standard curve does not need to be done every time, but it can be standardized before each use. The CCD detector is used. . The inductively coupled plasma spectrometer uses liquid sampling, using a CID, CCD or PMT detector, and generally uses an external standard for measurement.
Beijing Huake Yitong Analytical Instrument Co., Ltd. is a professional manufacturer of inductively coupled plasma emission spectrometer (ICP-AES/ICP-OES), and a high-tech enterprise integrating scientific research, production, sales and technical services. Since 2000, our company has specialized in the production of inductively coupled plasma emission spectrometers (ICP spectrometers) based on the technology of a well-known company. There are a group of domestic professionals who are the first to engage in ICP spectrometers. Based on his many years of practical experience in ICP spectrometer, in line with the development concept of "quality first, service first", we provide customers with high-quality and sincere services.
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