Pretreatment method and pretreatment system for detecting radium content in liquid
The invention relates to a pretreatment method for detecting radium content in liquid, which comprises the following steps: measuring the hardness of a liquid sample to be detected, feeding back a measurement result X to a central control unit, calculating the dosage V of EDTA-2Na required to be add...
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Main Authors | , , , , , , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
01.03.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a pretreatment method for detecting radium content in liquid, which comprises the following steps: measuring the hardness of a liquid sample to be detected, feeding back a measurement result X to a central control unit, calculating the dosage V of EDTA-2Na required to be added according to a pre-stored dosage calculation formula of EDTA-2Na, heating and stirring the liquid sample to be detected, and calculating the radium content of the liquid sample to be detected according to the dosage V of the EDTA-2Na required to be added. Sequentially adding a predetermined amount of barium chloride solution and sulfuric acid solution into the sample; standing the tested sample to obtain barium sulfate radium precipitate, removing supernate, leaving a small amount of tested sample and precipitate, adding an EDTA-2Na solution with the dosage of V into the tested sample and precipitate, and heating until the precipitate is completely dissolved; according to the pretreatment method for detecting th |
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Bibliography: | Application Number: CN202111219128 |