Open loop type device and method for measuring radium concentration in water

Abstract

The invention relates to an open loop type device and method for measuring radium concentration in water. The measurement device comprises a water sample measurement bottle, a bottle cover, an air inlet tube sleeve, an air outlet tube sleeve, an air inlet tube, an air outlet tube, an air pump, and an emanometer, wherein the air inlet tube sleeve and the air outlet tube sleeve are separately installed on the bottle cover, the air inlet tube is inserted in the air inlet tube sleeve, the air outlet tube is inserted in the air outlet tube sleeve, the air outlet tube is connected with an air inletof the air pump through a hose, and an air outlet of the air pump is connected with an air inlet of the emanometer through a hose. In measurement, the measurement device is put in a constant temperature environment, the air pump controls air to enter the water sample measurement bottle at a certain flow rate to bubble, so as to bring out radon in to-be-detected water sample, radon enters the air pump through the air outlet tube and then enters the emanometer, and the emanometer measures concentration of gaseous radon. And concentration of radium in water sample is calculated according to environment temperature, volume of to-be-detected water sample, flow rate of the air pump, and reading on the emanometer.

Description

technical field [0001] The invention relates to a nuclear radiation detection technology, in particular to an open-loop measuring device and method for radium concentration in water. Background technique [0002] Radium (Ra-226) is an extremely toxic bone-loving α radionuclide. Its large deposition in the body can induce bone cancer or leukemia, thus endangering human health. The activity of radium (Ra-226) in groundwater is generally high, which is 1-2 orders of magnitude higher than that of general surface water (river water, lake water, sea water, etc.); the source of drinking water in many parts of the world is groundwater, and some areas The groundwater naturally contains a high concentration of radium elements or with the mining of different minerals such as uranium mines, a large amount of radium elements are activated and released into the groundwater, which makes people use groundwater as a source of drinking water. When selecting drinking water sources, long-term ...

AI Technical Summary

Problems solved by technology

The activity of radium (Ra-226) in groundwater is generally high, which is 1-2 orders of magnitude higher than that of general surface water (river water, lake water, sea water, etc.); the source of drinking water in many parts of the world is groundwater, and some areas The groundwater naturally contains a high concentration of radium elements or with the mining of different minerals such as uranium mines, a large amount of radium elements are activated and released into the groundwater, which makes people use groundwater as a source of drinking water. When selecting drinking water sources, long-term monitoring of the concentration of radium contained in the local groundwater is required.

In the prior art, the measuring device and method for the concentration of radium element in water are complex and the measurement time is long, and a device and method for rapidly measuring the concentration of radium in water is needed

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