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用于测定煤中硫的X 射线荧光光谱仪 Compass 4294 plus

更新时间:2021-07-21      点击次数:732

用于测定煤中硫的能量色散 X 射线荧光光谱仪 Compass 4294 plus


xrf分析仪的油样制备步骤


不同于化学法、库仑滴定法、高温燃烧中和法和红外光谱法,现有国标煤总硫含量测定方法需要化学试剂多、操作复杂、耗时长,我公司采用能量分散型X-射线荧光光谱仪 Compass 4294 plus 快速、无损且可靠地测定煤中的硫含量。该方法是一种相对分析方法,将未知样品的光谱与硫含量已知的样品进行比较,进行定量分析。应用由实验确定 本方法分析了煤中硫的合适的制样方法、制样条件和测定条件;经过样品数据采集、光谱预处理和基体校正,建立相应的校准曲线。结果表明:该方法的制样效果良好。在30 MPa和30 s的条件下,可获得光滑的表面,不易断裂;经实验测定的硫元素测量管电压和管电流分别为10 kV和300 μA;内置真空装置可有效控制光基体背景散射严重、硫特征谱线易被空气吸收等问题;减小样品粒径与经验系数法修正相结合,可减少基体效应的影响;光谱平滑处理后,有效提高光谱分辨率,提高测量精度

Energy Dispersive X-ray Fluorescence Spectrometer Compass 4294 plus for Determination of Sulfur in Coal


oil sample prepare steps by xrf analyzer


Different from the chemical method, coulometric titration, high temperature combustion neutralization method and infrared spectroscopy, the existing national standard coal total sulfur content measurement methods require many chemical reagents, complicated operations and long time-consuming, our company adopts energy dispersion type The X-ray fluorescence spectrometer Compass 4294 plus quickly, non-destructively and reliably determines the sulfur content in coal. This method is a relative analysis method that compares the spectrum of an unknown sample with a sample with a known sulfur content for quantitative analysis. The application is determined by experiments This method analyzes the appropriate sample preparation methods, sample preparation conditions and measurement conditions of sulfur in coal; after sample data collection, spectrum preprocessing and matrix correction, the corresponding calibration curve is established. The results show that: The sample preparation effect of the method is good. Under the conditions of 30 MPa and 30 s, a smooth surface and not easy to break can be obtained; the sulfur element measuring tube voltage and tube current determined by the experiment are 10 kV and 300 μA, respectively; built-in vacuum device It can effectively control the problems of severe background scattering of light matrix and easy absorption of sulfur characteristic spectrum lines by air; the combination of reducing sample particle size and empirical coefficient method correction can reduce the influence of matrix effect; smoothing the spectrum After processing, the spectral resolution is effectively enhanced and the measurement accuracy is improved


Portable sulfur and chlorine in oil XRF analyzer (1)

Compass300 xrf mineral analyzer.jpg



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