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夏季黄海渤海上空大气颗粒物中水溶性离子浓度分布与化学特征

宋雨辰 周胜杰 张洪海 杨桂朋

宋雨辰, 周胜杰, 张洪海, 杨桂朋. 夏季黄海渤海上空大气颗粒物中水溶性离子浓度分布与化学特征[J]. 环境科学研究, 2016, 29(11): 1575-1581.
引用本文: 宋雨辰, 周胜杰, 张洪海, 杨桂朋. 夏季黄海渤海上空大气颗粒物中水溶性离子浓度分布与化学特征[J]. 环境科学研究, 2016, 29(11): 1575-1581.
SONG Yuchen, ZHOU Shengjie, ZHANG Honghai, YANG Guipeng. Distribution and Chemical Characteristics of Water Soluble Ions in Particulate Matter over the Yellow Sea and the Bohai Sea in Summer[J]. Research of Environmental Sciences, 2016, 29(11): 1575-1581.
Citation: SONG Yuchen, ZHOU Shengjie, ZHANG Honghai, YANG Guipeng. Distribution and Chemical Characteristics of Water Soluble Ions in Particulate Matter over the Yellow Sea and the Bohai Sea in Summer[J]. Research of Environmental Sciences, 2016, 29(11): 1575-1581.

夏季黄海渤海上空大气颗粒物中水溶性离子浓度分布与化学特征

基金项目: 国家自然科学基金项目(41306069,41320104008);山东省优秀中青年科学家奖励基金项目(BS2013HZ011)

Distribution and Chemical Characteristics of Water Soluble Ions in Particulate Matter over the Yellow Sea and the Bohai Sea in Summer

  • 摘要: 水溶性离子是PM2.5和PM10中的重要组分,其在大气中的直接和间接辐射能够对全球气候变化产生十分重要的影响.于2013年夏季采集黄海渤海上空大气PM2.5和PM10样品,采用离子色谱法分析其中主要水溶性离子(Cl-、NO3-、SO42-、Na+、K+、NH4+、Mg2+和Ca2+)及痕量有机酸离子〔CH3SO3-(MSA)、CH3COO-和HCOO-〕浓度,研究其化学特性及主要来源.结果表明:PM2.5和PM10中主要水溶性离子总质量浓度分别为21.16~25.07和24.14~29.45 μg/m3,平均值分别为(23.16±3.16)和(26.83±4.22)μg/m3,PM2.5和PM10中二次离子〔nss-SO42-(非海盐硫酸盐)、NO3-和NH4+〕的质量浓度较高,对总离子质量浓度的贡献分别为90.65%和79.87%.PM2.5和PM10中酸性离子与碱性离子当量浓度基本中和,呈现中性.气溶胶中nss-SO42-/NO3-(质量浓度比)有一定下降趋势,表明近年来我国燃煤SO2排放得到了一定控制.此外,ρ(MSA)、ρ(CH3COO-)和ρ(HCOO-)在PM2.5中的平均值分别为(0.006 2±0.002 3)(0.005 2±0.002 4)(0.000 9±0.000 3)μg/m3,而在PM10中分别为(0.008 3±0.002 5)(0.008 5±0.002 4)和(0.001 3±0.000 5)μg/m3,并且ρ(MSA)、ρ(CH3COO-)、ρ(HCOO-)与ρ(NO3-)的线性关系较好,表明有机酸离子的浓度变化受人类活动影响较为显著.

     

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出版历程
  • 收稿日期:  2016-04-08
  • 修回日期:  2016-07-20
  • 刊出日期:  2016-11-25

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