• 关键词：气溶胶  无机氮  TSP  青岛

• 基金项目：国家自然科学基金重大项目(No.40490262;40552001);教育部科学技术研究重点项目(No.106104)

• 于丽敏
• 1. 中国海洋大学海洋环境与生态教育部重点实验室, 青岛 266003; 2. 中国海洋大学环境科学与工程学院, 青岛 266003

• 祁建华
• 1. 中国海洋大学海洋环境与生态教育部重点实验室, 青岛 266003; 2. 中国海洋大学环境科学与工程学院, 青岛 266003

• 孙娜娜
• 1. 中国海洋大学海洋环境与生态教育部重点实验室, 青岛 266003; 2. 中国海洋大学环境科学与工程学院, 青岛 266003

• 石金辉
• 1. 中国海洋大学海洋环境与生态教育部重点实验室, 青岛 266003; 2. 中国海洋大学环境科学与工程学院, 青岛 266003

• 高会旺
• 1. 中国海洋大学海洋环境与生态教育部重点实验室, 青岛 266003; 2. 中国海洋大学环境科学与工程学院, 青岛 266003

• 郭新宇
• 日本爱媛大学海洋环境研究中心, 2-5 Bunkyocho, Matsuyama 7908577, Japan

• 摘要：于2004年冬季在青岛地区采集了大气气溶胶TSP(总悬浮颗粒物)样品,并于2005年3月和5月航次采集了黄、南海TSP和安德森分级样品,分析了气溶胶中无机氮组分(NO₂-、NH₄⁺、NO₃^-)的浓度,探讨了相应区域大气颗粒物中各种无机氮离子的区域分布、粒级分布.青岛地区冬季TSP的月平均值为102.00～227.00μg·m^-3;黄海TSP浓度为80.00～130.00μg·m^-3,低于青岛地区;南海TSP浓度最低,在30·167μg·m^-3以下.NH₄⁺-N是南、黄海及青岛地区大气气溶胶中主要的无机氮组分,占到总无机氮含量的53.14%～94.72%;其次是NO₃^--N,占到总无机氮含量的4.75%～46.64%;NO₂--N对无机氮的干沉降贡献很小,仅占不到0.54%.NO₃^--N的粒径范围较宽,多数呈现双峰分布,峰值出现在4.7～7.0μm和2.1～3.3μm范围内;NH₄⁺-N的粒径分布范围较窄,主要集中于1.1μm以下的细粒子范围内;NO₂--N性质不稳定,其分布比较复杂.近年来,汽车尾气排放量的增大增加了青岛地区大气气溶胶中NO₃^--N的含量.

• Abstract：Total suspended particles (TSP) were collected in Qingdao in winter 2004. And TSPand size-segregated particles had been collected over the Yellow Sea in March 2005 and over the South China Sea in May 2005. Inorganic nitrogen of aerosol (NO₂^-, NH₄⁺, NO₃^- ) were analyzed, and their spatial distribution and size distribution were also discussed. The monthly average concentration of TSPvaried between 102.00μg·m^-3 and 227.00μg·m^-3 in winter in Qingdao. The concentration of TSPover the Yellow Sea was lower than those in the Qingdao area with the value of 80.00 ～130.00 μg·m^-3 . And the concentration of TSPover the South China Sea was the lowest, less than 30.167μg·m^-3. The results showed that NH₄⁺-Nwas the major inorganic nitrogen in aerosol over the Yellow Sea , the South China sea and in Qingdao, which accounted for 53.14% ～94.72% of the total inorganic nitrogen (TIN) in aerosol. The contribution of NO₃^- -Nto TINwas less than that of NH₄⁺-N, accounting for 4.75% ～46.64% of TINin aerosol. The contribution of NO₂^--Nto the inorganic nitrogen deposition was very low with the percent less than 0.54%. The size range of NO₃^- -Nwas wide, with the two peaks presenting in the range of 4.7 ～7.0μm and 2.1 ～3.3μm. Most NH₄⁺-Nexisted in the fine particles less than 1.1μm. There is no obvious distribution for the NO₂^--N. The concentration of NO₃^- -Nin aerosol in Qingdao had been increasing for these years, which maybe due to the increasing discharge of the vehicle exhaust.

• Key words：aerosol  inorganic nitrogen  TSP  Qingdao

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