The R&D Process Of Atomic Fluorescence Spectrometer In China
At present, domestic atomic fluorescence spectrometers occupy nearly 90% of the domestic market, which is the pride of domestic analytical instruments. In terms of instrument research and development, Chinese scientists have made many achievements with independent intellectual property rights.
The argon-hydrogen flame automatic low-temperature ignition device, the water vapor removal device, the light source drift and pulsation deduction device, and the online reducing agent bubble elimination device are practical patented technologies, which make the instrument structure simple, the service life is increased, the instrument stability is enhanced, and the memory effect is significantly reduced. , which enhances the practicality of atomic fluorescence spectrometers.
The atomic fluorescence analyzer developed by the small flame atomization technology combines the flame atomic fluorescence spectrometry and the HG-AFS device organically, so that elements such as Au, Ag, Cu, Co, and Ni can be determined by the atomic fluorescence spectrometry.
The sequential injection sampling device greatly reduces the consumption of samples and reagents, and can automatically configure standard series and sample automatic dilution online, realize semi-automation and full automation, and improve the use efficiency of atomic fluorescence spectrometer.
Another striking achievement is multi-channel technology. Zhou Zhiheng et al. theoretically expounded the quantitative relationship of multi-element synchronous analysis, the working principle of the detection system, the source of errors and the hardware composition, and proposed the design idea of channel merging and the elimination of inter-channel Interference technology, has successfully produced a multi-channel atomic fluorescence spectrometer, which can measure 4 elements at the same time.
The full-spectrum multi-channel vapor generation atomic fluorescence spectrometer organically combines the dispersion and non-dispersion technologies, which expands the measurement element range of the existing hydride generation-atomic fluorescence spectrometer and effectively improves the work efficiency.
New patents such as sequential scanning non-scattering atomic fluorescence spectrometer, low-temperature plasma atomic fluorescence spectrometer, energy-saving and cheap tungsten coil furnace constant magnetic field Zeeman background atomic fluorescence spectrometer, trap device for harmful elements in exhaust gas, etc. Develop towards specialization and multi-purpose.
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