1994—2013年广东大亚湾地区大气中~7Be浓度变化
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- 英文论文题名：Variations of ~7Be concentrations in the atmosphere of Guangdong Daya Bay district,China during the period 1994 to 2013
- 论文作者：宋海青 ; 莫光华 ; 李灵娟 ; 陈文涛 ; 王家玥 ; 李巧勤 ; 黄乃明
- 英文论文作者：SONG Hai-qing ; MO Guang-hua ; LI Ling-juan ; CHEN Wen-tao ; WANG Jia-yue ; LI Qiao-qin ; HUANG Nai-ming ; Guangdong Environmental Radiation Monitoring Center
- 年：2015
- 作者机构：广东省环境辐射监测中心;
- 论文关键词：~7Be ; 气溶胶 ; 降雨 ; 广东大亚湾地区
- 英文论文关键词：~7Be ; aerosol ; rainfall ; Guangdong Daya Bay districts
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第5册（核材料分卷、辐射防护分卷）
- 语种：中文
- 分类号：X513;X591
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：452k
- 原文格式：O
- 会议级别：全国
摘要
本文通过测量在1994-2013年间采集的广东大亚湾地区(鹏城和大坑)大气中气溶胶样品,分析其中宇生放射性核素~7Be的浓度及其在不同季节的变化规律。结果表明:119个鹏城气溶胶中~7Be浓度的范围值为(0.339~10.4)mBq·m~(-3),20年各年监测数据的平均浓度为(1.96±1.68)~(5.07±3.18)mBq·m~(-3)(k=1);116个大坑气溶胶中~7Be浓度的范围值为(0.335~10.3)mBq·m~(-3),20年各年监测数据的平均浓度为(2.06±1.64)~(5.05±2.01)mBq·m~(-3)(k=1)。两个站点~7Be的浓度水平逐月变化趋势总体相似,随季节而变化,高值发生在秋冬季节(10月份至次年1月份),在夏季则明显低于其他季节。值得注意的是,两个采样点~7Be的浓度水平均表现了相似的与降雨量呈负相关的现象,这与大多数国内外文献报导一致,显然这是由于雨水对大气淋洗作用的原因。由于各年样本数不同(4~9个)、采样月份不固定(月样本数3~16个)以及降雨特征的变化,造成~7Be各年监测数据的平均浓度变化较大,未见年际间变化趋势。如何将积累的监测数据进行归纳总结和合理地进行数据分析并用于相关科学研究,是环境监测部门需要解决的问题。
The radioactivity of ~7Be was determined in the aerosol samples collected at Pengcheng and Dakeng in Daya Bay district of Guangdong province,south China during 1994 — 2013.The results showed that the ~7Be activities ranged from 0.339 mBq · m~(-3) to 10.4 mBq · m~(-3) in all 119 samples at Pengcheng and from 0.335 mBq · m~(-3) to 10.3 mBq · m~(-3) in all 116 samples at Dakeng.The annual averages of ~7Be(x±s) during the twenty-year period were from(1.96 ± 1.68) mBq · m~(-3) to(5.07± 3.18) mBq · m~(-3) at Pengcheng and from(2.06 ± 1.64) mBq · m~(-3) to(5.05 ± 2.01) mBq · m~(-3) at Dakeng.The seasonal variations of ~7Be activities showed the similar pattern at the two sites that the high values occurred in the autumn and winter months(October to the nest January) and the low values in the summer months.The level of ~7Be showed negatively correlated with rainfall,which is obviously due to the leaching effect of rain,and consistent with that reported in literatures.The different number of samples collected in each year(4~9 samples/year),not fixed sampling month(3~16 samples/month) and variation of rainfall characteristics,resulted in greater variation of annual average of ~7Be concentration which showed no inter annual trends.How to sum up and analysis the accumulated monitoring data for related scientific research,is an important problem needed to be solved by environmental monitoring department.
The radioactivity of ~7Be was determined in the aerosol samples collected at Pengcheng and Dakeng in Daya Bay district of Guangdong province,south China during 1994 — 2013.The results showed that the ~7Be activities ranged from 0.339 mBq · m~(-3) to 10.4 mBq · m~(-3) in all 119 samples at Pengcheng and from 0.335 mBq · m~(-3) to 10.3 mBq · m~(-3) in all 116 samples at Dakeng.The annual averages of ~7Be(x±s) during the twenty-year period were from(1.96 ± 1.68) mBq · m~(-3) to(5.07± 3.18) mBq · m~(-3) at Pengcheng and from(2.06 ± 1.64) mBq · m~(-3) to(5.05 ± 2.01) mBq · m~(-3) at Dakeng.The seasonal variations of ~7Be activities showed the similar pattern at the two sites that the high values occurred in the autumn and winter months(October to the nest January) and the low values in the summer months.The level of ~7Be showed negatively correlated with rainfall,which is obviously due to the leaching effect of rain,and consistent with that reported in literatures.The different number of samples collected in each year(4~9 samples/year),not fixed sampling month(3~16 samples/month) and variation of rainfall characteristics,resulted in greater variation of annual average of ~7Be concentration which showed no inter annual trends.How to sum up and analysis the accumulated monitoring data for related scientific research,is an important problem needed to be solved by environmental monitoring department.
引文
[1]郑向东,万国江,汤洁,等.瓦里关山近地面气溶胶中~7Be和~(210)Pb的观测及其对臭氧浓度变化的示踪[J].科学通报,2005,50(1):72-76.
[2]朱厚玲,汤洁,郑向东.天然放射性核素铍-7和铅-210在大气中示踪研究中的应用[J].气象科技,2003,31(3):131-135.
[3]万国江,郑向东,H.N.LEE,等.瓦里关山与观风山近地面空气~7Be浓度季节性变化对比[J].地球化学,2006,35(3):257-264.
[4]苏琼,宋海青.大亚湾核电站运行前周围环境的γ放射性的周期监测[J].中国核科技报告CNIC-00699LIHMPH-005,1992.
[5]莫光华,李巧勤,李灵娟,等.气候对大气中~7Be浓度的影响[C].第四届粤港澳可持续发展研讨会,2008.
[6]刘国卿,罗奇,潘远海,等.深圳市大气~7Be含量分布及其示踪意义[J].地球化学,2014,43(1):32-38.
[7]杨永亮,史敬磊,张干,等.广州不同季风期近地面大气气溶胶中~7Be与持久性有机污染物的同步观测[J].地球化学,2011,40(1):72-82.
[8]姜让荣.地表空气中~7Be浓度[J].核技术,1994,17(3):172-175.
[9]朱晓华,杨永亮,盖楠,等.不同季风时节北京近地面大气颗粒物中~7Be和POPs的变化[J].地球化学,2014,43(2):101-113.
[10]杨永亮,史敬磊,张干,等.东亚季风区近地面大气气溶胶中OCPs和PCBs纬度分布:以~7Be为参照系[J].地球化学,2014,43(1):20-31.
[11]万国江,郑向东,Lee H N,等.黔中气溶胶传输的~(210)Pb和~7Be示踪:Ⅰ.周时间尺度的解释[J].地球科学进展,2010,25(5):492-504.
[12]万国江,郑向东,Lee H N,等.黔中气溶胶传输的~(210)Pb和~7Be示踪:Ⅱ.月及年时间尺度的剖析[J].地球科学进展,2010,25(5):505-513.
[13]姜让荣.杭州附近地表空气中的~7Be浓度及其季节性变化[J].核电子学与探测技术,1995,15(5):317-320.
[14]戴科荐,祝莉,姜让荣.气溶胶~7Be活度浓度的测量方法及其应用[J].原子能科学技术,2011,45(4):487-490.
[15]林伟立,朱彤,唐孝炎.珠穆朗玛峰地区大气示踪剂~7Be的观测[J].北京大学学报(自然科学版),2003,39(4):462-466.
[16]樊元庆,王世联,李慧娟,等.北京地区大气中~7Be、~(137)Cs和~(131)I活度浓度分布规律初步研究[J].原子能科学技术,2013,47(2):189-192.
[17]常印忠,王旭辉,王世联,等.西安地区大气环境气溶胶样品中放射性核素监测[J].核技术,2008,31(10):796-800.
[18]Koch D M,JacobDJ,Graustein W C.Vertical transport of tropospheric aerosol as indicated by 7 Be and~(210)Pb in a chemical tracer model[J].J Geophys Res,1996,10KD13):18651-18666.
[19]Lozano R L,Herndndez-Ceballo M A,San Miguel E G,Adame J A,Bolivar J P.Meteorological factors influencing the~7 Be and~(210)Pb concentrations in surface air from the southwestern Iberian Peninsula[J].Atmos Environ,2012,63:168-178.
[20]Pinero Garcia F,Ferro Garcia M A,Azahra M.~~7Be behavior in the atmosphere of the city of Granada January2005 to December 2009[J].Atmos Environ,2012,47:84-91.
[21]Kim S K,Hong G H,Baskaran M,Park K M,Chung C S,Kim K H.Wet removal of~7Be and~(210)Pb at the Korean[J].Yellow Sea Coast,1998,4:58-68.
[22]Du Jinzhou,Zhang Jing,Wu Yunfeng.Deposition patterns of atmospheric~7 Be and~(210)Pb in coast of East China Sea,Shanghai,China[J].Atmos Environ,2008,42(20):5101-5109.
[23]Wall brink PJ,Murray AS.Distribution and variation of~7Be in soil sunder different surface cover conditions and its potential for describing soil redistribution processes[J].Water Resources Research,1996,32(2):467-476.
[24]Viezee W,Singh H B.The distribution of~7Be in the troposphere:implications on stratospheric/tropopsheric air cxchange[J].Geophys.Res.Lett.,1980,7:805-808.
[25]Stohl A,Spichtinger-Rakowsky N,Bonasoni P,et al.The Influence of Stratospheric Intrusions on Alpine Ozone Concentrations[J].Atmospheric Environment,2000,34:1323-1354.
[2]朱厚玲,汤洁,郑向东.天然放射性核素铍-7和铅-210在大气中示踪研究中的应用[J].气象科技,2003,31(3):131-135.
[3]万国江,郑向东,H.N.LEE,等.瓦里关山与观风山近地面空气~7Be浓度季节性变化对比[J].地球化学,2006,35(3):257-264.
[4]苏琼,宋海青.大亚湾核电站运行前周围环境的γ放射性的周期监测[J].中国核科技报告CNIC-00699LIHMPH-005,1992.
[5]莫光华,李巧勤,李灵娟,等.气候对大气中~7Be浓度的影响[C].第四届粤港澳可持续发展研讨会,2008.
[6]刘国卿,罗奇,潘远海,等.深圳市大气~7Be含量分布及其示踪意义[J].地球化学,2014,43(1):32-38.
[7]杨永亮,史敬磊,张干,等.广州不同季风期近地面大气气溶胶中~7Be与持久性有机污染物的同步观测[J].地球化学,2011,40(1):72-82.
[8]姜让荣.地表空气中~7Be浓度[J].核技术,1994,17(3):172-175.
[9]朱晓华,杨永亮,盖楠,等.不同季风时节北京近地面大气颗粒物中~7Be和POPs的变化[J].地球化学,2014,43(2):101-113.
[10]杨永亮,史敬磊,张干,等.东亚季风区近地面大气气溶胶中OCPs和PCBs纬度分布:以~7Be为参照系[J].地球化学,2014,43(1):20-31.
[11]万国江,郑向东,Lee H N,等.黔中气溶胶传输的~(210)Pb和~7Be示踪:Ⅰ.周时间尺度的解释[J].地球科学进展,2010,25(5):492-504.
[12]万国江,郑向东,Lee H N,等.黔中气溶胶传输的~(210)Pb和~7Be示踪:Ⅱ.月及年时间尺度的剖析[J].地球科学进展,2010,25(5):505-513.
[13]姜让荣.杭州附近地表空气中的~7Be浓度及其季节性变化[J].核电子学与探测技术,1995,15(5):317-320.
[14]戴科荐,祝莉,姜让荣.气溶胶~7Be活度浓度的测量方法及其应用[J].原子能科学技术,2011,45(4):487-490.
[15]林伟立,朱彤,唐孝炎.珠穆朗玛峰地区大气示踪剂~7Be的观测[J].北京大学学报(自然科学版),2003,39(4):462-466.
[16]樊元庆,王世联,李慧娟,等.北京地区大气中~7Be、~(137)Cs和~(131)I活度浓度分布规律初步研究[J].原子能科学技术,2013,47(2):189-192.
[17]常印忠,王旭辉,王世联,等.西安地区大气环境气溶胶样品中放射性核素监测[J].核技术,2008,31(10):796-800.
[18]Koch D M,JacobDJ,Graustein W C.Vertical transport of tropospheric aerosol as indicated by 7 Be and~(210)Pb in a chemical tracer model[J].J Geophys Res,1996,10KD13):18651-18666.
[19]Lozano R L,Herndndez-Ceballo M A,San Miguel E G,Adame J A,Bolivar J P.Meteorological factors influencing the~7 Be and~(210)Pb concentrations in surface air from the southwestern Iberian Peninsula[J].Atmos Environ,2012,63:168-178.
[20]Pinero Garcia F,Ferro Garcia M A,Azahra M.~~7Be behavior in the atmosphere of the city of Granada January2005 to December 2009[J].Atmos Environ,2012,47:84-91.
[21]Kim S K,Hong G H,Baskaran M,Park K M,Chung C S,Kim K H.Wet removal of~7Be and~(210)Pb at the Korean[J].Yellow Sea Coast,1998,4:58-68.
[22]Du Jinzhou,Zhang Jing,Wu Yunfeng.Deposition patterns of atmospheric~7 Be and~(210)Pb in coast of East China Sea,Shanghai,China[J].Atmos Environ,2008,42(20):5101-5109.
[23]Wall brink PJ,Murray AS.Distribution and variation of~7Be in soil sunder different surface cover conditions and its potential for describing soil redistribution processes[J].Water Resources Research,1996,32(2):467-476.
[24]Viezee W,Singh H B.The distribution of~7Be in the troposphere:implications on stratospheric/tropopsheric air cxchange[J].Geophys.Res.Lett.,1980,7:805-808.
[25]Stohl A,Spichtinger-Rakowsky N,Bonasoni P,et al.The Influence of Stratospheric Intrusions on Alpine Ozone Concentrations[J].Atmospheric Environment,2000,34:1323-1354.
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