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Operation steps of infrared carbon and sulfur analysis instrument

Release time: 2019-12-06 10:05:40 Click: 1257

In addition to the above-mentioned multi-medium carbon and sulfur analysis instruments, two other methods are currently more popular, because the detection speed is faster, and the above-mentioned chemical solvents are not available, 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 in energy before and after the infrared rays pass through the gas to be measured and the concentration of the gas to be measured, the Lambert - Beer law can be approximated .

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

Before the measuring room of the infrared gas analyzer passes the gas to be measured, the infrared light energy passing through both the measuring room and the reference room is equal. At this time, the measuring 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 chamber, CO2 absorbs the infrared light energy, the infrared light energy on both sides of the measurement chamber and the reference chamber is not equal, and the energy radiated by the infrared light source received by the infrared detector is reduced. CO2 or SO2 concentration. 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 content has the advantages of fast analysis speed, high sensitivity, wide measurement range, wide application, etc. 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 analysis instrument

Spectrophotometric Determination of Carbon and Sulfur

Spectroscopy, including ICP , is used to quantitatively analyze the amount of carbon and sulfur in metals, and has been reported in recent years 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 were used as carrier gases, the pre-spark time was extended to 40 seconds, and the sulfur content in the sample was measured using a strong decay discharge method. 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 arc , and then the gas mixture produced is analyzed by emission spectrometry, and the detection limit is 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 a function of the arc temperature and can be calculated. Optimizing some operating conditions of emission spectroscopy can make it suitable for the analysis of high content and trace elements in metals. For example, when analyzing non-alloy steels and alloy steels with emission spectroscopy, the pre-spark time and integration time are optimized as a function of standard deviation, which can simultaneously detect multiple elements and widen 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。 For another example, a superfine particle generation system ( UEP ) developed is used to generate fine particles in the sample by means of spark arc, and the fine particles are accelerated into the inductively coupled emission spectrum, and the sample is directly analyzed, so that the spectroscopic method is used to analyze metal Carbon and sulfur applications have been further developed.


下一篇: 常见的原子发射光谱,你知道吗? Previous: Comparison of the three chemical detection principles of carbon and sulfur analysis (2) Next: Common atomic emission spectra, do you know?

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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