| 嵊泗地区大气PM2.5中汞形态污染及其与碳组分的关系 |
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| 引用本文： | 程娜,钱冠磊,段炼,赵梦飞,修光利.嵊泗地区大气PM2.5中汞形态污染及其与碳组分的关系[J].环境科学,2017,38(2):438-444. |
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| 作者姓名： | 程娜 钱冠磊 段炼 赵梦飞 修光利 |
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| 作者单位： | 华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237,浙江省嵊泗县环境监测站, 舟山 202450,华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237,华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237,华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237 |
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| 摘 要： | 2014年11月~2015年8月在舟山群岛嵊泗岛上设定采样点采集了4个不同季节的大气PM_(2.5)样品.采用微波消解-原子荧光光度法测定了颗粒物中汞及其不同形态,采用热/光碳分析仪分析样品中有机碳(OC)和元素碳(EC).结果表明,嵊泗岛上大气PM_(2.5)中总汞(PBM)的质量浓度范围为0.02~1.25 ng·m-3,而单位质量颗粒物中汞的含量为(12.46±18.79)μg·g-1,比陆地城市PM_(2.5)的汞含量偏高.ANOVA分析结果表明,PBM的季节变化规律为:秋季春季冬季夏季.春秋季节汞的质量浓度较高,这表明春秋季节嵊泗地区的汞可能受到外来输送的影响.此外,大气PM_(2.5)中不同形态汞的分析结果表明,惰性汞(RPM)的比例最高,占53.1%.OC、EC均与PBM显示出明显的正相关性,表明碳组分有利于汞的气-粒转化.由于OC/EC比值间接反映了大气光氧化能力的高低,而OC/EC与可溶盐酸汞(HPM)呈显著正相关,这说明高浓度HPM主要来自于大气中的气-粒转化.char-EC/soot-EC与形态汞呈现显著负相关,表明嵊泗地区的大气颗粒汞主要受外界源输入的影响.
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| 关 键 词： | 海岛 PM2.5 PM2.5中总汞(PBM) 汞形态 碳组分 |
| 收稿时间： | 2016/7/28 0:00:00 |
| 修稿时间： | 2016/9/9 0:00:00 |
Correlation of Speciated Mercury with Carbonaceous Components in Atmospheric PM2.5 in Shengsi Region |
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| CHENG N,QIAN Guan-lei,DUAN Lian,ZHAO Meng-fei and XIU Guang-li.Correlation of Speciated Mercury with Carbonaceous Components in Atmospheric PM2.5 in Shengsi Region[J].Chinese Journal of Environmental Science,2017,38(2):438-444. |
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| Authors: | CHENG N QIAN Guan-lei DUAN Lian ZHAO Meng-fei and XIU Guang-li |
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| Institution: | State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,Environmental Monitoring Station of Shengsi, Zhoushan 202450, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China and State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | |
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| Keywords: | island PM2 5 PM2 5-bounded mercury (PBM) mercury species carbonaceous components |
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