AlphaGUARD测氡仪对BG2015R测氡仪标定的探索

黎己余; 林稚颖; 郑辰禾; 杨鼎鸿; 程庆斌

doi:10.19987/j.dzkxjz.2022-109

AlphaGUARD测氡仪对BG2015R测氡仪标定的探索

doi: 10.19987/j.dzkxjz.2022-109

福建省地震局, 福州 350001

基金项目: 中国地震局监测、预报、科研三结合课题（3JH-202001049），中国地震局地震科技星火攻关项目（XH21013），中国地震局震情跟踪定向工作任务（面上2021020301）和福建省地震局构造地球化学攻关团队联合资助。

详细信息

通讯作者:
黎己余（1990-），男，工程师，主要从事地震监测系统运维与建设，数据跟踪，地震预测等工作。E-mail：723976263@qq.com

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- 文章访问数: 14
- HTML全文浏览量: 16
- PDF下载量: 3
出版历程
- 收稿日期: 2022-07-08
- 录用日期: 2023-03-29
- 网络出版日期: 2023-04-08

Exploration on Calibration of BG2015R Radon Meter by AlphaGUARD Radon Meter

Fujian Earthquake Agency, Fujian Fuzhou 350001, China

摘要

摘要: 氡对地震前后地层应力变化反应较为敏感，是示踪构造与地震活动的一种有效的化学元素。氡观测在我国地震前兆流体观测手段中占很大权重，但由于近年来仪器老化及更新换代较多，许多台站测氡仪的标定工作受到制约，因而影响了氡观测资料的准确性和可靠性。本文利用高精度的AlphaGUARD测氡仪，分别采用含有一定浓度的新鲜井水、固定源对宁德一号井BG2015R测氡仪进行标定实验，其结果的新K值与旧K值相对误差分别为2.83%、1.1%，标定结果符合中国地震台网的观测要求；同时对标定实验中AlphaGUARD测氡仪、BG2015R测氡仪测值进行了均值、一致性等指标计算分析，给出了对两套仪器标定时的取值建议。文中所述的标定实验的流程和方法可以为在网运行测氡仪的标定提供一定的技术参考。
- P2000测氡仪 /
- 标定 /
- 一致性
Abstract: Radon is sensitive to the change of strata stress before and after the earthquake. It is an effective element for tracing the structure and seismic activity, and accounts for a large proportion in China's earthquake precursor observation network. In recent years, due to the aging and updating of instruments, the calibration of radon meters at many stations has been restricted, which further affects the accuracy and reliability of radon observation data. In this paper, the high-precision AlphaGUARD radon meter is used to calibrate the BG2015R radon meter in Ningde No.1 Well by using fresh well water and fixed sources with a certain concentration. The relative errors between the new K value and the old K value are 2.83% and 1.1% respectively, and the calibration results meet the observation requirements of China Earthquake Networks Center; At the same time, the average and consistency of the measured values of AlphaGUARD radon meter and BG2015R radon meter in the calibration experiment are calculated and analyzed, and the value suggestions for the calibration of the two sets of instruments are given. The flow and method of the calibration experiment described in this paper can provide a certain technical reference for the calibration of the radon meter operating in the network.
- Radon measurement instrument /
- calibration /
- consistency

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图 1 SD-3A与BG2015R测氡仪水气路串联图

Figure 1. Water and gas circuit series diagram of SD-3A and BG2015R radon measuring instrument

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图 2 氡探测器结构图

Figure 2. Structure diagram of radon detector

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图 3 高压计数枰曲线

Figure 3. High voltage counting curve

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图 4 实验流程图

Figure 4. Experimental flow chart

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图 5 实验1（a）和实验2（b）设备连接示意图

Figure 5. Schematic diagram of equipment connection for experiment 1 (a) and experiment 2 (b)

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图 6 实验中测氡仪测试值

Figure 6. Test values of radon meters in experiment 1 and experiment 2

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图 7 实验4设备连接示意图

Figure 7. Schematic diagram of equipment connection for experiment 4

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图 8 实验4和实验5测氡仪观测值

Figure 8. Test values of radon meters in experiment 4 and experiment 5

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表 1 测氡仪实验数据结果分析

Table 1. Analysis of experimental data of radon meters

测氡仪型号	实验组次	均值(Bq/L)		误差(Bq/L)		一致性结果
测氡仪型号	实验组次	（7—12）	（5—20）	（7—12）	（5—20）	一致性结果
P2000	实验1-1	211.33	209.94	5.20	5.38	0.47%
	实验1-2	168.33	167.00	4.27	3.93	0.56%
	实验1-3	69.30	69.41	1.70	2.11	0.11%
	实验2-1	142.83	143.38	4.40	4.30	0.27%
	实验2-2	139.50	138.19	4.32	4.81	0.67%
	实验2-3	139.33	137.19	3.01	5.60	1.10%
BG2015R	实验1-1	4841.38	4608.15	83.84	81.82	2.55%
	实验1-2	3563.73	3513.41	72.52	68.43	0.73%
	实验1-3	1601.77	1644.72	38.44	33.97	1.35%
	实验2-1	3521.27	3915.70	171.23	11.99	5.46%
	实验2-2	3695.47	3896.75	136.34	27.68	2.73%
	实验2-3	3618.20	3858.08	105.34	40.31	3.34%

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表 2 标定K值表（单位：cpm•m³•Bq⁻¹）

Table 2. Scale K value table (unit: cpm•m³•Bq⁻¹)

参数及单位	校正后测值 C_Rn(Bq/L)	计数率 N（cpm）	标定K值	K值平均值	K值相对误差/%	新K值	旧K值	新—旧K值相对误差/%
实验1 （1号闪烁室）	211.33	4625	0.02189	0.02217	−1.26	0.02217	0.0274	−19.1
	168.33	3491	0.02074		−6.45
	69.30	1565	0.02258		1.85
实验2 （1号闪烁室）	142.78	3916	0.02742	0.02769	−0.97	0.02769	0.0274	1.1
	139.45	3897	0.02794		0.91
	139.23	3858	0.02771		0.06
实验3 （2号闪烁室）	112.42	2720	0.02419	0.02387	1.34	0.02387	0.0241	−0.9
	115.90	2732	0.02357		−1.26
	111.57	2661	0.02385		−0.08
实验4 （4号闪烁室）	116.75	7420	0.0635	0.06350	0.0	0.06350	0.0766	−17.10
	118.72	7453	0.0628		−0.11
	119.64	7682	0.0642		0.11
实验5 （4号闪烁室）	124.67	9829	0.0788	0.07877	0.04	0.07877	0.0766	2.83
	121.50	9552	0.0786		−0.21
	122.67	9682	0.0789		0.17

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参考文献(12)

[1]	杜建国,宇文欣,李圣强,等. 八宝山断裂带逸出氡的地球化学特征及其映震效能[J]. 地震,1998,18(2):155-162 Du J G,Yu W X,Li S Q,et al. The geochemical characteristics of escaped radon from the Babaoshan fault zone and its earthquake reflecting effect[J]. Earthquake,1998,18(2):155-162
[2]	刘耀炜,任宏微. 汶川8.0级地震氡观测值震后效应特征初步分析[J]. 地震,2009,29(1):121-131 doi: 10.3969/j.issn.1000-3274.2009.01.016 Liu Y W,Ren H W. Preliminary analysis of the Characteristics of post-seismic effect of radon after the Wenchuan 8.0 earthquake[J]. Earthquake,2009,29(1):121-131 doi: 10.3969/j.issn.1000-3274.2009.01.016
[3]	张清秀,孔令昌,江劲军,等. 新型流气式固体氡源用于氡仪器标定的实验研究[J]. 华南地震,2012,32(3):60-67 doi: 10.3969/j.issn.1001-8662.2012.03.007 Zhang Q X,Kong L C,Jiang J J,et al. An experimental study on the application of new gas flow solid radon source in radon instrument calibration[J]. South China Journal of Seimology,2012,32(3):60-67 doi: 10.3969/j.issn.1001-8662.2012.03.007
[4]	Di Carlo C,Lepore L,Venoso G,et al. Radon concentration in self-bottled mineral spring waters as a possible public health issue[J]. Science Reports,2019(9):14252
[5]	Kotrappa P,Stieff L R,Volkovitsky P. Radon monitor calibration using NIST radon emanation standards:Steady flow method[J]. Radiation Protection Dosimetry,2005,113(1):70-74 doi: 10.1093/rpd/nch421
[6]	Seid A M A,Turhan S,Kurnaz A,et al. Radon concentration of different brands of bottled natural mineral water commercially sold in Turkey and radiological risk assessment[J]. International Journal of Environmental Analytical Chemistry,2022,102(19):7469-7481 doi: 10.1080/03067319.2020.1830989
[7]	任宏薇,姚玉霞,黄仁桂. 等. 地震监测氡观测仪器校准新方法研究[J]. 地震,2016,36(3):46-54 doi: 10.3969/j.issn.1000-3274.2016.03.005 Ren H W,Yao Y X,Huang R G,et al. A new calibration method of emanometer in earthquake monitoring[J]. Earthquake,2016,36(3):46-54 doi: 10.3969/j.issn.1000-3274.2016.03.005
[8]	任宏薇,姚玉霞,周红艳,等. 测氡仪标准仪器校准法的条件研究[J]. 地震,2017,37(3):148-157 doi: 10.3969/j.issn.1000-3274.2017.03.015 Ren H W,Yao Y X,Zhou H Y,et al. Conditions for calibrating emanometer using standard instrument[J]. Earthquake,2017,37(3):148-157 doi: 10.3969/j.issn.1000-3274.2017.03.015
[9]	起卫罗,曹舸斌,方伟. 基于AlphaGUARDP2000F测氡仪利用水中溶解氡对DDL-1型气氡仪校准的实验研究[J]. 地震工程学报,2019,41(6):;1560-1567 Qi W L,Cao G B,Fang W. Experimental study of the calibration of a DDL-1 gas radon meter based on the AlphaGUARD P2000F emanometer and dissolved radon[J]. China Earthquake Engineering Journal,2019,41(6):;1560-1567
[10]	姚玉霞. AlphaGUARD测氡仪应用于地震监测氡观测仪器校准实验及注意问题分析[J]. 国际地震动态,2017(8):72-73 doi: 10.3969/j.issn.0253-4975.2017.08.053 Yao Y X. Application of AlphaGUARD radon measuring instrument to calibration experiment of seismic monitoring radon measuring instrument and analysis of attentions[J]. Recent Developments in World Seismology,2017(8):72-73 doi: 10.3969/j.issn.0253-4975.2017.08.053
[11]	肖健,黄仁桂,姚玉霞,等. BG2015闪烁室测氡仪器应用于地震气氡测试运行实验[J]. 防灾减灾学报,2017,33(1):44-51 doi: 10.13693/j.cnki.cn21-1573.2017.01.008 Xiao J,Huang R G,Yao Y X,et al. Application of BG2015 Scintilation chamber radon measuring instrument in the test of earthquake gas radon[J]. Journal of Disaster Prevention and Reduction,2017,33(1):44-51 doi: 10.13693/j.cnki.cn21-1573.2017.01.008
[12]	赵影,黄仁桂,王敏. 九江二井氡观测实验研究[J]. 防灾减灾学报,2016,32(3):30-33 doi: 10.13693/j.cnki.cn21-1573.2016.03.006 Zhao Y,Huang R G,Wang M. Research on radon observation radon at Jiujiang No. 2 well[J]. Journal of Disaster Prevention and Reduction,2016,32(3):30-33 doi: 10.13693/j.cnki.cn21-1573.2016.03.006