论文部分内容阅读
采用经验和数法校正基体效应,X荧光光谱测定样品中的主、次痕量元素是一种简便而快速的方法,但由于经验系数的求取很大程度上取决于标准样品的类型、含量范围和计算方法,往往使用范围有一定的局限性,本文提出的标准分类法计算经验系数,在一定程度上克服了上述的局限性,具有较宽的分析范围。 实验部分 一、样品制备 称取颗粒度小于200目的粉末样品2g与1g微晶纤维素,置于塑料球内,盖紧,放入康氏振荡器内,滚动20分钟,使之混匀,倒入制样的钢模内,以20吨压力压制成直径为32mm的圆片,放入干燥器内待用。 二、仪器及测量条件 1.日本RIGAKU.S.MAX(3080)E型X射线荧光光谱仪;端窗Rh靶(QEG-75H)X光管。
Empirical and numerical methods to correct the matrix effect, X-ray fluorescence spectrometry determination of primary and secondary trace elements in the sample is a simple and rapid method, but the empirical coefficient depends largely on the type of standard samples, content Range and calculation methods, often have some limitations of the use of the standard taxonomy proposed in this article to calculate the empirical coefficient, to some extent, to overcome the above limitations, with a wide range of analysis. Experimental part First, the sample preparation Weigh the particle size of less than 200 mesh powder sample 2g and 1g of microcrystalline cellulose, placed in a plastic ball, tightly closed, placed Kang’s oscillator, rolling 20 minutes to mix, pour Into a sample-like steel mold, with 20 tons of pressure into a diameter of 32mm wafer, into the dryer stand-by. Second, the instrument and measurement conditions 1 Japan RIGAKU.S.MAX (3080) E-type X-ray fluorescence spectrometer; end window Rh target (QEG-75H) X-ray tube.