快速准确测定萤石中硫元素含量的方法

Method for rapidly and accurately determining sulphur element content in fluorite

Abstract

A method for rapidly and accurately determining sulphur element content in fluorite mainly comprises the following steps: weighing a fluorite sample, adding deionized water, and then adding mixed acidto cause the fluorite sample to be fully converted into diffluent salt; adding deionized water and heating till the salt is completely dissolved; metering volume till 100mL; adopting reagent withoutthe sample for blanking, adding calcium standard solution equivalent to the fluorite sample, and then adding standard solution of sulphur element of different volumes; using sulphur element concentration as a horizontal ordinate and the intensity of a light spectrum as a vertical coordinate to draw a working curve; and then automatically determining the concentration of the sulphur element in thesample solution by a computer according to the working curve. The method uses an inductance coupling plasma body emission light spectrum, mainly solves the problems in the existing method of incompletely decomposed sample, the background interference of the light spectrum during measurement, spectral line interference and the like, determines appropriate operational parameters and steps and rapidly determines the sulphur elements in the fluorite in high effect.
快速准确测定萤石中硫元素含量的方法,它主要包括如下步骤:称取萤石样品,加去离子水,再加入混合酸使萤石样品完全转化为易溶解的盐类;加去离子水,加热,至盐类完全溶解;定容至100mL;采用无样品的试剂空白,加入与萤石样品相当的钙标准溶液,再加入不同体积的硫元素的标准溶液;以硫元素浓度为横坐标,光谱强度为纵坐标,绘制工作曲线;再由计算机根据工作曲线自动确定样品溶液中硫元素的浓度。本发明采用电感耦合等离子体发射光谱仪,它主要解决了现有方法中样品分解不完全,测量时光谱背景干扰,谱线干扰等问题,确定合适的操作参数和步骤,实现高效快速准确测量荧石中的硫元素。

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    CN-103226102-AJuly 31, 2013日照钢铁控股集团有限公司萤石中全硫的测定方法
    CN-103226102-BApril 06, 2016日照钢铁控股集团有限公司萤石中全硫的测定方法
    CN-103575691-AFebruary 12, 2014方大特钢科技股份有限公司Method for rapidly judging quality of fluorite