Atomic Spectrophotometer Hurry!

1. When copper ions and complexes are together, the concentration of total copper ions can be measured with an atomic absorption spectrophotometer, and the operation is carried out according to the steps of atomic absorption spectrophotometer. Atomic absorption spectroscopy is a method of quantitative analysis of the absorption effect of the atomic vapor produced by the substance on the specific general line (usually the characteristic spectral line of the element to be measured), if the content of copper ions is measured, the test solution is first sprayed into a mist into the combustion flame, and the solution containing copper salt volatilizes and dissociates into copper atomic vapor at the temperature of the flame. Then the copper hollow cathode lamp is used as the light source, and the light emitted by the characteristic spectral lines of copper with wavelength is emitted, and when it passes through the vapor of copper atoms of a certain thickness, part of it is absorbed and weakened by the ground state copper atoms in the steam.

The degree to which the characteristic spectral lines of copper are weakened by measuring the monochromator and detector can be used to obtain the copper content of the sample.

2. The existence of the element in actual use is the accuracy of the atomic spectrophotometer, if the element itself and other elements are more stable and volatile compounds, which will affect the atomization efficiency of the element to be measured, and the result is not accurate, then it is necessary to adjust the flame temperature and flame gas composition, use the high-temperature flame to reduce this interference, and also add another element and interferon to form a more stable compound, so that the element to be measured is released, such as phosphate interferes with the determination of calciumWhen LA or SR is added, SR and LA bind to phosphate ions and release CA, thus eliminating the interference of phosphate on calcium. It is also possible to add a protective agent so that the element to be measured does not form a difficult volatile compound with the interfering element, for example, in order to eliminate the interference of phosphate on calcium, EDTA can also be added, at which point Ca is converted into an EDTA-Ca complex, which is easily atomized in a flame. This eliminates phosphate interference.

Therefore, it is advantageous to use organic complexing agents, because the organic matter is easily destroyed in the flame, so that the metal elements bound to the organic complexing agent can be effectively atomized. So what you are talking about is a good thing to say, because the copper complexes are more easily atomized. Therefore, in practice, when the element is combined with other elements to form a stable and difficult to volatile compound, it is necessary to find a way to release the element to be measured.

The presence of complexes may have a certain effect on the measured values of the flame atomic absorption method.

Increasing the flame temperature and increasing the width of the grating can be improved.

Atomic emission spectrometry, the impact is very small.

Use of atomic absorption spectrophotometer.

What do I have to say, I just sound familiar to the term.

Atomic absorption spectrometer, also known as atomic absorption spectrophotometer, analyzes metal elements according to the effect of atomic vapor in the ground state of a substance on the absorption of characteristic radiation. It is capable of sensitive and reliable determination of trace or trace elements.