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Operation steps of infrared carbon and sulfur analyzer

Release time: 2019-12-06 10:05:40 Click: 1627

In addition to the above-mentioned multi-medium carbon and sulfur analysis instruments, there are two other methods that are currently popular because the detection speed is faster and there are no chemical solvents as described above, and the detection steps are more concise.

4.26 μm 的红外线, SO2 吸收波长为 7.4 μm 的红外线。 CO2 absorbs infrared rays with a wavelength of 4.26 μm , and SO2 absorbs infrared rays with a wavelength of 7.4 μm . - 比尔定律。 According to the relationship between the change of energy before and after infrared rays pass through the gas to be measured and the concentration of the gas to be measured, Lambert - Beer law can be used approximately .

CO2 SO2 Put the metal sample in the ceramic crucible, and add a certain amount of tungsten, iron filings, or tungsten, tin co-solvent, heated and melted in a high-frequency induction furnace in an oxygen atmosphere, the carbon or sulfur in the sample forms CO2 or SO2 .

Before the measurement chamber of the infrared gas analyzer does not pass the gas to be measured, the infrared light energy passing through both sides of the measurement chamber and the reference chamber is equal, and the measurement instrument indicates zero. CO2 SO2 通过测量室时, CO2 吸收了红外光能量,测量室和参比室两边的红外光能量便不相等,红外检测器所接收到的红外光源辐射的能量减少,其减少的程度与 CO2 SO2 的浓度有关。 When CO2 or SO2 passes through the measurement room, CO2 absorbs the infrared light energy, the infrared light energy on both sides of the measurement room and the reference room is not equal, the energy received by the infrared light source received by the infrared detector decreases, and the degree of reduction is The concentration of CO2 or SO2 is related. Therefore, measuring the change in the output value of the infrared detector also measures the content of carbon or sulfur in the metal sample. The instrument has a microprocessor for data processing, and the percentage of carbon or sulfur in the sample is directly displayed on the screen.

Infrared method for the determination of carbon and sulfur has the advantages of fast analysis speed, high sensitivity, wide measurement range, and wide application. It is a fast and good carbon and sulfur analysis method today .

红外碳硫分析仪器操作步骤

Operation steps of infrared carbon and sulfur analyzer

Spectrophotometric determination of carbon and sulfur

Spectroscopic method, including ICP method, is used to quantitatively analyze the amount of carbon and sulfur in metals. In recent years, there have been continuous reports at home and abroad. 95%Ar 5%H 2 作为载气,预火花时间延长到 40 秒,并使用强衰减放电方法,测样品中的硫量。 In order to obtain a good discharge atmosphere, 95% Ar and 5% H 2 are used as carrier gases, the pre-spark time is extended to 40 seconds, and the strong decay discharge method is used to measure the amount of sulfur in the sample. CO CO 2 ,然后用发射发谱分析产生的气体混合物,检出限为 0.001% The metal sample is placed between the tungsten and molybdenum electrodes. In an oxygen atmosphere, the carbon in the metal is converted into CO and CO 2 by an electric arc , and then the gas mixture produced by emission spectrometry is analyzed with a detection limit of 0.001% .

- - 氧系统中的 CO CO 2 ,氧化铁等平衡浓度,是电弧温度的函数,可以计算出来。 The equilibrium concentrations of CO , CO 2 , and iron oxide in the carbon - iron - oxygen system are functions of the arc temperature and can be calculated. Optimizing certain operating conditions of the emission spectrum can be applied to the detection of high content and trace elements in metals. For example, when analyzing non-alloy steel and alloy steel by emission spectroscopy, the pre-spark time and integration time are optimized as a function of standard deviation, which can simultaneously detect multiple elements and expand the detection range. UEP ),借助火花电弧使样品中产生细粒子,并把细粒子加速到电感耦合发射光谱中,直接分析样品,使光谱法在分析金属碳,硫的应用中得到进一步发展。 As another example, a developed ultrafine particle generation system ( UEP ) was used to generate fine particles in the sample by means of spark arc, and the fine particles were accelerated into the inductively coupled emission spectrum to directly analyze the sample, so that the spectrometry was used to analyze the metal The application of carbon and sulfur has been further developed.


下一篇: 常见的原子发射光谱,你知道吗? Previous: Compare the chemical detection principles of three types of carbon and sulfur analysis (2) Next: Do you know the common atomic emission spectrum?

hot key words:

Direct Reading Spectrometer

High frequency infrared carbon and sulfur analyzer

Spark Direct Reading Spectrometer

Portable spectrometer

Photoelectric Direct Reading Spectrum Analyzer


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