What Are The Hot Metal Detector Manufacturers Considering For Heavy Metal Detection?

Heavy metals not only pollute the surface water through runoff and leaching, but also enter the human body through the food chain. It is difficult for the human body to metabolize heavy metals and ultimately directly or indirectly endanger the health of human organs. Next, the hot metal detector manufacturers introduce the heavy metal detection methods for everyone?

1. Atomic Fluorescence Spectroscopy: Atomic fluorescence spectroscopy is an emission spectroscopy method in which atoms are analyzed in terms of radiant energy. The characteristic emission light emitted by the excitation light source is irradiated with a certain concentration of atomic vapor of the element to be tested to generate atomic fluorescence. Under certain conditions, the relationship between the fluorescence intensity and the concentration of the element to be tested in the measured solution follows the Lambert-Beer law. The intensity of the fluorescence is measured to determine the content of the element in the sample to be tested.

2. Atomic absorption spectrometry: Atomic absorption spectrometry, also known as atomic absorption spectrophotometry, is based on the absorption of the corresponding atomic resonance radiation in the ultraviolet and visible range based on the outer electrons of the ground state atom. A content-based analytical method is a method of measuring the absorption of light radiation by a particular gaseous atom.

3. Inductively coupled plasma emission spectroscopy: Inductively coupled plasma emission spectroscopy is based on the atom or ion of the element being measured, and is excited in the light source to generate characteristic radiation. By judging the existence of this characteristic radiation and the intensity thereof, Qualitative and quantitative analysis of each element.

4. Laser induced breakdown spectroscopy: Thermal metal detector manufacturers believe that laser induced breakdown spectroscopy is one of the most commonly used laser ablation spectral analysis techniques. Its working principle is: the laser is concentrated by the condenser lens, the high peak power density makes the surface material of the unknown sample vaporize and ionize, and the high temperature and high energy plasma (temperature up to 10000K) is excited, and the atomic spectrum and ion spectrum emitted by the plasma are The optical system is collected and coupled into the incident slit of the spectrometer through the input fiber. The spectral data is transmitted to the computer through the data acquisition controller. The spectrum can be analyzed to calculate the composition and concentration of the measured substance.