Atomic Absorption Spectrometer Water Quality Requirements

It is understood that atomic absorption spectrometry is an analytical method based on the determination of the content of measured elements based on the absorption intensity of the corresponding atomic resonance radiation in the ultraviolet and visible light ranges of the ground state atomic electrons in the gaseous state, which is a measurement-specific method. A method for the absorption of light radiation by gaseous atoms. What are the requirements for water quality?

This method is a new kind of instrument analysis method that emerged in the mid-1950s and gradually developed in the future. It is used in geology, metallurgy, machinery, chemical industry, agriculture, food, light industry, biomedicine, environmental protection, material science, etc. Various fields have a wide range of applications. The method is mainly applied to the analysis of trace and trace components in the sample.

The atoms of each element can not only emit a series of characteristic lines, but also can absorb the same characteristic lines as the wavelength of the emission line. When a light emitted by a light source passes through an atomic vapor, that is, the frequency of the incident radiation is equal to the energy frequency required for the electrons in the atom to transition from the ground state to the higher energy state (generally, the first excited state). The outer electrons in the atom will selectively absorb the characteristic lines emitted by the same element, weakening the incident light. The degree of attenuation of the characteristic line due to absorption is called absorbance A and is proportional to the content of the element to be measured.

Atomic Absorption requires relatively strict ion content in pure water, and water quality should reach ultrapure water level, ie, the resistivity should reach 18 MΩ or more. In addition there are requirements for absorbance as well as TOC and microorganisms.