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What are the difficulties when using a spectrometer to analyze low-content elements?

Release time: 2019-10-23 09:25:13 Click: 1492

Why is it difficult to analyze low-level elements?

When analyzing low-content elements, the lower the content, the more difficult the results are. , 0.065%一般并不符合对元素含量的要求,越是低含量,越是要求高。 There are many factors. If the content of the element is very low, the requirement is 0.055% . 0.065% generally does not meet the requirements for the content of the element. The lower the content, the higher the requirement.

The low-element excitation spectrum is weak, and it is very picky about the spectrometer model and various components. The excitation light source and the detection element must be stable and sensitive, and high accuracy can get good detection results.

光谱仪分析元素

Spectrometer analysis element

Si2528.51Si2516.111Si2506.899埃。 For example, when doing qualitative analysis of silicon in steel samples, the last lines of silicon can be found from the wavelength table as Si2881.58 , Si2528.51 , Si2516.111 , Si2506.899 Angstroms. If no other elements interfere, even

When the content of an element in the sample gradually decreases, the intensity of the line of the element in the spectrum decreases accordingly, and the number of lines that can be observed decreases successively. When the element content drops to a certain level, most of the spectral lines of the element will disappear in the spectrum, leaving only one or a few spectral lines. When the content of the element further decreases, these spectral lines finally disappear. These spectral lines should be called the last line of the element, and the resonance line mostly belongs to the last line. 应选用该元素最灵敏线,即最后线。 When analyzing an element with a low content , the most sensitive line of the element should be selected , which is the last line.

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