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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: 1170

Why is it difficult to analyze low-level elements?

When analyzing low-content elements, the lower the content, the more difficult it is to get accurate results. , 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, it is required to be 0.055% . 0.065% generally does not meet the requirements for the content of the element.

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

光谱仪分析元素

Spectrometer Analysis Elements

Si2528.51Si2516.111Si2506.899埃。 For example, when doing qualitative analysis of silicon in steel samples, the last line of silicon can be found from the wavelength table is Si2881.58 , Si2528.51 , Si2516.111 , Si2506.899 angstroms. If there is no other element interference, even

When the content of an element in the sample gradually decreases, the intensity of the element's spectral line in the spectrum will correspondingly weaken, and the number of observable spectral lines will also decrease. When the element content drops to a certain level, most of the spectral lines of the element disappear in the spectrum, leaving only one or a few spectral lines. When the element content is further reduced, these spectral lines finally disappear. These spectral lines should be called the element's last line, and most of the resonance lines belong to the last line. 应选用该元素最灵敏线,即最后线。 When analyzing low-content elements , the most sensitive line of the element should be selected , that is , the last line.

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Direct Reading Spectrometer

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