Atomization device and atomization method

Abstract

The present invention relates to the technical field of metal element analysis, more specifically, to an atomization device and an atomization method, including an atomizer and an atomization chamber connected to the output end of the atomizer, characterized in that the atomizer The input end of the input port is connected with an acid box filled with acid liquid, and the acid box is provided with an inlet for the liquid to be tested to flow in; the acid box is connected with an empty box, and the connection between the acid box and the empty box is provided There is an ion exchange membrane that does not allow the passage of the metal ions to be measured. The invention makes the precipitation of metal ions in the solution to be tested react with the acid solution to dissolve them in the solution, eliminates the precipitation and impurities in the solution to be tested, and reduces the blockage of the atomizer; the ion exchange membrane is set to prevent the metal ions from the acid box Enter the empty tank, by controlling the volume of the solution drawn from the acid tank to the empty tank to be equal to the volume of the acid solution added, so as to keep the concentration of metal ions in the acid tank unchanged and ensure the measurement accuracy of the atomic absorption spectrophotometer.

Description

technical field [0001] The invention relates to the technical field of metal element analysis, and more specifically, to an atomization device and an atomization method. Background technique [0002] Atomic absorption spectrophotometer, also known as atomic absorption spectrometer, analyzes metal elements according to the effect of material ground state atomic vapor on characteristic radiation absorption. It mainly consists of four parts: light source, atomizer, spectroscopic system and detection system. The atomization process of the liquid to be tested is completed in the atomization device, and the liquid to be tested is converted into free atom vapor (ground state atoms) by the nebulizer, so as to absorb characteristic radiation. As an important component, the nebulizer's performance has a significant impact on the precision of the measurement and chemical interference. [0003] The existing nebulizers are often blocked during use, resulting in reduced atomization effic...

AI Technical Summary

Problems solved by technology

[0003] The existing nebulizers are often clogged during use, resulting in reduced atomization efficiency and stability, which seriously affects the accuracy and sensitivity of the atomic absorption spectrophotometer

The main reason for the clogging is that most of the elements to be tested in the solution to be tested are heavy metal elements. Heavy metal elements are prone to form a small amount of precipitation under alkaline conditions, which cannot be detected by the naked eye. At the same time, the solution to be tested will also contain trace impurities. When the liquid flows through the atomizer, sediment and impurities are deposited in the atomizer, and blockage will occur after a long time

Images