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Absolute measuring system and method for radon concentration in water

A technology of absolute measurement and radon concentration, applied in the field of absolute measurement system of radon concentration in water, which can solve the problems of inconvenient operation, low accuracy and poor real-time performance.

Active Publication Date: 2018-12-18
NANHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These radon measurement methods are all relative measurement methods, which need to calibrate the measuring instrument itself first, there is error transmission, and the conditions of measurement and calibration must be strictly consistent, resulting in low accuracy, poor real-time performance, and inconvenient operation

Method used

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  • Absolute measuring system and method for radon concentration in water
  • Absolute measuring system and method for radon concentration in water
  • Absolute measuring system and method for radon concentration in water

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Embodiment Construction

[0021] like figure 1 As shown, the absolute measurement system of radon concentration in water according to the present invention includes a first gamma detector 1, a first linear amplifier 2, a first single-channel pulse amplitude analyzer 3, and a first delay shaping circuit connected in sequence as the first channel 4, the first scaler 5, as the second gamma detector 6, the second linear amplifier 7, the second single-track pulse amplitude analyzer 8, the second delay shaping circuit 9, the second calibration circuit connected successively as the second track Marker 10; the output end of the first delay shaping circuit 4 is also connected with the first input end of coincidence circuit 11, and the output end of the second delay shaping circuit 9 is also connected with the second input end of coincidence circuit 11, and coincidence circuit 11 The coincidence output end is connected with the third scaler 12 and forms a coincidence track, and a detection zone 13 is formed betw...

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Abstract

The invention discloses an absolute measuring system and a method for radon concentration in water, wherein the measuring system comprises a first [gamma] detector, a first linear amplifier, a first single channel pulse amplitude analyzer, a first delay formation circuit, a first scalar connected in series, and a second [gamma] detector, a second linear amplifier, a second single channel pulse amplitude analyzer, a second delay formation circuit, a second scalar connected in series. The outputs of the first delay formation circuit and the second delay formation circuit are also connected to the input of a coincidence circuit, and the coincidence output of the coincidence circuit is connected to a third scalar. The measuring system also comprises a calculation module for calculating the activity concentration C222Rn of 222Rn in the sample to be tested. According to the absolute measuring system and the method for radon concentration in water, the radon concentration in the water can bemeasured accurately, in real time and conveniently without the need to scale the measuring system itself.

Description

technical field [0001] The invention belongs to the technical field of radon concentration measurement in water, and in particular relates to an absolute measurement system and method for radon concentration in water. Background technique [0002] Radon in water can induce the occurrence of human lung cancer and gastric cancer, and the sharp change of radon concentration in groundwater can be used as one of the basis for predicting earthquakes. There are various methods for measuring radon concentration in water, which can be divided into passive measurement and active measurement. Active measurement is to "drive out" the radon in the water in the form of bubbling, and then measure the radon concentration in the bubbling air, and convert it into the radon concentration in water according to the relational formula. The methods include: electret method, scintillation chamber method, etc.; passive measurement That is to directly measure the concentration of radon in water, the...

Claims

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Application Information

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IPC IPC(8): G01T1/167G01T1/178
CPCG01T1/167G01T1/178
Inventor 赵修良贺三军殷志成刘丽艳周剑良肖拥军
Owner NANHUA UNIV
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