CAJ | 학술논문

研究分析了2011年10月至2012年5月期间深圳市大气气溶胶中7Be的含量变化及影响因素。深圳市7Be的含量范围为0~7.6 mBq/m3,平均值为3.1 mBq/m3,气象条件中降雨对大气7Be的影响最大,而温度以及大气颗粒物 PM2.5与7Be 的相关性不明显。在春季月份期间,大气7Be 比活度与近地面 O3的含量变化吻合良好,提示7Be可用于示踪平流层臭氧向地表的动力输送。
연구분석료2011년10월지2012년5월기간심수시대기기용효중7Be적함량변화급영향인소。심수시7Be적함량범위위0~7.6 mBq/m3,평균치위3.1 mBq/m3,기상조건중강우대대기7Be적영향최대,이온도이급대기과립물 PM2.5여7Be 적상관성불명현。재춘계월빈기간,대기7Be 비활도여근지면 O3적함량변화문합량호,제시7Be가용우시종평류층취양향지표적동력수송。
In this study, aerosol samples in Shenzhen were collected and analyzed for beryllium-7, over a period of eight month (October’11-May’12). The concentrations of 7Be in the atmosphere of Shenzhen were in the range of 0-7.6 mBq/m3, with a mean value of 3.1 mBq/m3. Precipitation is the main factor affecting airborne 7Be concentration, and no significant correlation was found between 7Be specific activity with air temperature as well as the concentration of particle matter (PM2.5). During the spring months, airborne 7Be specific activity correlated fairly well with surface ozone, indicating its implication for tracing downward transport of ozone from the upper troposphere or lower stratosphere.