首页 | 期刊简介 | 编委会 | 投稿要求 | 化学品管理信息动态 | 学术会议 | 专辑 | 毒理学测试技术设备 | 订购本刊 | 联系我们 | English version

王体健,朱佳雷,王婷婷. 中国地区大气汞的数值模拟研究[J]. 生态毒理学报, 2014, 9(5): 850-861
中国地区大气汞的数值模拟研究
Numerical Study on Atmospheric Mercury over China
投稿时间:2014-03-05  修订日期:2014-04-16
DOI:10.7524/AJE.1673-5897.20140305001
中文关键词:  大气汞  浓度特征  干沉降  区域大气环境模式系统RegAEMS
英文关键词:atmospheric mercury  concentration characteristic  dry deposition  regional atmospheric environment modeling system (RegAEMS)
基金项目:高等学校博士学科点专项科研基金(20110091110010);国家重点基础研究发展计划(2010CB428503);国家科技部公益行业(气象)科研专项(GYHY201206011-1);科技支撑项目(2011BAK21B03)和国家人才培养基金(J1103410)
作者单位
王体健 南京大学大气科学学院南京 210093 
朱佳雷 南京大学大气科学学院南京 210093 
王婷婷 南京大学大气科学学院南京 210093 
摘要点击次数:
全文下载次数:
中文摘要:
      结合中国地区的汞排放,利用引入大气汞化学反应机制和干沉降模型的区域大气环境模式系统(Regional Atmospheric Environment Model System,RegAEMS),对中国地区大气汞化物浓度和干沉降通量的时空分布特征进行模拟研究。研究结果表明,中国地区年均气态零价汞Hg0、氧化汞HgO、氢氧化汞Hg(OH)2、氯化汞HgCl2和颗粒态汞Hgp的沉降量分布类似。除西部、西北部地区Hg0的浓度较低外(<0.5 ng·m-3),其他地区均高于全球背景浓度。各类汞化物浓度的季节变化明显,8月最低,2、3月最高。一次汞源区附近汞浓度随高度递减,在离源较远的地区,高层汞浓度较高。气态零价汞的干沉降速度的季节变化最明显,其干沉降通量在夏季最高。模拟区域中气态零价汞、氧化汞和颗粒态汞的年干沉降量分别为163.9、7.43和32.2 t。
        
AuthorAffiliation
Wang TijianSchool of Atmospheric Sciences, Nanjing University, Nanjing 210093
Zhu JialeiSchool of Atmospheric Sciences, Nanjing University, Nanjing 210093
Wang TingtingSchool of Atmospheric Sciences, Nanjing University, Nanjing 210093
英文摘要:
      Atmospheric mercury chemistry and dry deposition were incorporated into Regional Atmospheric Environment Model (RegAEMS) given on mercury emission inventory, the spatiotemporal variations of atmospheric mercury and its total deposition flux were investigated. Results from RegAEMS indicated that high annual mean Hg0, HgO, Hg(OH)2, HgCl2, and Hgp loadings appeared in the regions with large mercury emissions, in most regions over China exceeded its global background level of 1.0 ng?m-3 except those in West and Northwest China. There were significant seasonal variations for surface loadings of these five kinds of mercury, and they were the highest in February and March while are the lowest in August. Profiles of annual mean mercury loading in different sites over the regions indicate that there were high concentrations of primary mercury (Hg0 and Hgp) in low levels for the sites near the sources. In remote sites, the loading peaks of these kinds of mercury appeared in higher levels. Due to the strongest removing rates of Hg0, its dry deposition flux was much larger in summer. Simulated total deposited Hg0, HgO, and Hgp over the region were 163.9, 7.43, and 32.2 t in 2004.
查看全文  查看/发表评论  下载PDF阅读器
关闭

您是第5860894位访问者   京ICP备 09058833 号

主办单位:中国科学院生态环境研究中心     单位地址:北京市海淀区双清路18号

 服务热线:010-62941072       传真:010-62923563       邮编:100085    Email: stdlxb@rcees.ac.cn

    本系统由北京勤云科技发展有限公司设计

0463美女美女3764美女美女ktv