采样方式对地震监测闪烁室法测氡仪校准结果的影响研究

doi:10.12196/j.issn.1000-3274.2020.04.015

EARTHQUAKE ›› 2020, Vol. 40 ›› Issue (4): 191-197.doi: 10.12196/j.issn.1000-3274.2020.04.015

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Study on the Influence of Sampling Method on the Calibration Results of Emanometer Measured by Scintillation Chamber in Seismic Observation

ZHOU Hong-yan¹, REN Hong-wei², NING Hong-tao¹, HUANG Ren-gui¹, ZHAO Ying¹, YAO Yu-xia³

1. Earthquake Administration of Jiangxi, Nanchang 330039, China;
2. Key Laboratory of Crustal Dynamics, Institute of Crustal Dynamics, CEA, Beijing 100085, China;
3. Earthquake Administration of Gansu, Pingliang 744000, China

Received:2019-09-03 Online:2020-10-30 Published:2020-10-23

Abstract

Abstract: Using HD-6 multi-functional automatic radon chamber and the international standard measuring instrument AlphaGUARD PQ2000Pro, cyclic sampling and negative pressure sampling were used to calibrate three scintillation chambers of the FD-125 radon and thorium analyzer. K-values and relative inherent errors of the three scintillation chambers were calculated respectively. The results show that the K-value of scintillation chamber obtained by cyclic sampling method is smaller than that obtained by negative pressure sampling method. The relative inherent error of scintillation chamber obtained by cyclic sampling is less than or equal to 5%, which meets the standard of seismic hydrogeochemistry, while the relative inherent error of scintillation chamber obtained by negative pressure sampling is large than 5%, which does not meet the standard of seismic hydrogeochemistry. The conclusion is that the method of cyclic sampling is more suitable for the calibration of radon chamber of scintillation radon meter in seismic observation.

Key words: Emanometer, Scintillation chamber, Cyclic sampling, Negative pressure sampling, Radon chamber

CLC Number:

P315.7

ZHOU Hong-yan, REN Hong-wei, NING Hong-tao, HUANG Ren-gui, ZHAO Ying, YAO Yu-xia. Study on the Influence of Sampling Method on the Calibration Results of Emanometer Measured by Scintillation Chamber in Seismic Observation[J]. EARTHQUAKE, 2020, 40(4): 191-197.

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Study on the Influence of Sampling Method on the Calibration Results of Emanometer Measured by Scintillation Chamber in Seismic Observation

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[1]	HUANG Ren-gui, ZHAO Ying, LI Yu-ze, WANG Shi-xian, LUO Qi-bin, XIAO Jian. Preliminary Study on the Traceability of the Observation and Measurement of Radon for Earthquake Monitoring [J]. EARTHQUAKE, 2019, 39(2): 183-190.
[2]	REN Hong-wei,YAO Yu-xia,ZHOU Hong-yan. Conditions for Calibrating Emanometer using Standard Instrument [J]. EARTHQUAKE, 2017, 37(3): 148-156.
[3]	REN Hong-wei, YAO Yu-xia, HUANG Ren-gui, CHEN Lan-qing, WANG Gui-qing. A New Calibration Method of Emanometer in Earthquake Monitoring [J]. EARTHQUAKE, 2016, 36(3): 46-54.