Method for determining calcium, magnesium, iron and copper in industrial boiler through microwave digestion-inductive coupling plasma emission spectrometry

Abstract

The invention provides a method for determining calcium, magnesium, iron and copper in industrial boiler through a microwave digestion-inductive coupling plasma emission spectrometry. According to themethod provided by the invention, microwave digestion is used as a pre-treatment technology, and time and temperature for microwave digestion of a sample are optimized; a suitable analysis line is selected, so that the measurement time is reduced and the measurement accuracy is improved; a reagent blank background can be reduced and crossed pollution of the sample is avoided; meanwhile, an inductive coupling plasma emission spectrometry is combined, so that the method has various advantages of high precision, rapid analysis speed, small matrix effect, low detection limit, environment friendliness, capability of realizing simultaneous determination of a plurality of elements in water and the like, and the working efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of chemical element analysis, in particular to a microwave digestion-inductively coupled plasma emission spectrometry method for determining calcium, magnesium, iron and copper in industrial boiler water. Background technique [0002] The water quality of the boiler water plays a vital role in the safe and energy-saving operation of the boiler. Calcium and magnesium in boiler water are important elements that cause boiler scaling, and iron and copper in boiler water are important elements that cause boiler corrosion. If the water quality is not up to standard, the boiler will not only scale, affect the heat transfer of the heating surface, increase the thermal resistance, and cause waste of fuel, but also cause the metal to corrode under the deposit, causing the water-cooled boiler wall to overheat, resulting in bulging or tube bursting, seriously Or even cause production shutdown, boiler scrapping, seriously endange...

AI Technical Summary

Problems solved by technology

[0003] At present, most laboratories use spectrophotometry and complexometric titration to detect calcium, magnesium, iron, and copper in water. However, these classical determination methods need to measure each element separately, and cannot realize the simultaneous determination of multiple elements. Not only is the operation cumbersome , time-consuming, low efficiency, and more organic reagents are used in the experiment process, which will pollute the environment and bring certain harm to the experiment operator

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