Method for measuring content of elements in coal ash

Abstract

The invention provides a method capable of accurately measuring the content of elements such as potassium, sodium, iron, calcium, magnesium and manganese in coal ash. The method comprises the following steps: preparing various series of concentration standard solutions of potassium, sodium, iron, calcium, magnesium and manganese, respectively measuring the absorbancy of each corresponding element in each series of concentration standard solution, with a concentration value of each standard solution as a horizontal coordinate and the absorbancy of the corresponding element in each standard solution as a longitudinal coordinate, respectively generating a standard working curve of each element, obtaining the concentration value of the corresponding element on the standard working curve of the corresponding element according to the absorbancy of each element of the obtained sample, and finally obtaining the content of the elements such as potassium, sodium, iron, calcium, magnesium and manganese in the sample. The correlation r of the generated working curve is between 0.996 and 1.000, the linear error Delta x is less than 10.0 percent, the content of the elements in the measured sample is accurate and reliable, the problems that the working curve is difficultly generated or the linearity does not meet the requirement to cause difficulty in accurate measurement in the measurement of the elements in the coal ash and the like are effectively solved, a measurement effect is good, and the measurement requirement is met.

Description

[0001] technical field [0002] The invention relates to a measuring method, in particular to a measuring method for coal ash element content, and belongs to the technical field of analysis and testing. Background technique : [0003] When using conventional atomic absorption spectrophotometry to determine the content of potassium, sodium, iron, calcium, magnesium, manganese and other elements in coal ash, according to the current national standards, it is necessary to prepare a mixed series of working solutions and a mixed series of standard solutions, but in practice During the operation, due to the different components of the coal ash, the prepared mixed series of working solutions cannot normally measure the absorbance of each element during instrument analysis, and cannot generate a curve that meets the linearity requirements or can not be measured at all, thus affecting the potassium in coal ash. Accurate determination of sodium, iron, calcium, magnesium, manganese an...

AI Technical Summary

Problems solved by technology

[0003] When using conventional atomic absorption spectrophotometry to determine the content of potassium, sodium, iron, calcium, magnesium, manganese and other elements in coal ash, according to the current national standards, It is necessary to prepare a mixed series of working solutions and a mixed series of standard solutions, but in actual operation, due to the different components of the coal ash, the prepared mixed series of working solutions cannot normally measure the absorbance of each element during instrument analysis, and cannot generate a solution that satisfies linearity. The required curve may not be measured at all, thus affecting the accurate determination of potassium, sodium, iron, calcium, magnesium, manganese and other elements in coal ash

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