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首页> 外文会议>NATO Advanced Research Workshop on Regional Climate Variability and Its Impacts in the Mediterranean Area >CONCENTRATION AND CHEMICAL COMPOSITION OF PM_(2.5) AND PM_(10-2.5) IN THE NORTHEASTERN MEDITERRANEAN
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CONCENTRATION AND CHEMICAL COMPOSITION OF PM_(2.5) AND PM_(10-2.5) IN THE NORTHEASTERN MEDITERRANEAN

机译：地中海东北部（2.5）和PM_（2.5）和PM_（10-2.5）的浓度和化学成分

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Two stage aerosol samples (PM_(10-2.5) and PM_(2.5)) were collected at a rural site (Erdemli) located on the coast of the Northeastern Mediterranean, between April 2001 and April 2002. A total of 581 aerosol samples were analysed for trace elements (Fe, Ti, Mn, Ca, V, Ni, Zn, Cr) and water soluble ions (Na~+, NH_4~+, K~+, Mg~(2+), Ca~(2+), Cl~-, Br~-, NO_3~-, SO_4~(2-), C_2O_4~(2-) and MS~-).^sThe annual mean PM_(10) and PM_(2.5) levels were 36.4 ± 27.8 μg m~(-3) and 9.7 ± 5.9, respectively. The highest levels of PM_(10) were observed during the transition period (March, April and May) due to mineral dust transported from North Africa and during winter due to sea spray generation. However, PM_(2.5) levels exhibited higher concentrations during summer resulting from an enhanced production of secondary aerosols. PM_(10), crustal elements, sea salt aerosols and NO_3~- were mainly associated with the coarse mode whereas nssSO_4~(2-), C_2O_4~(2-), MS~-, NH_4~+, Cr and Ni were found predominantly in the fine fraction. Ionic balance analysis performed in the coarse and fine aerosol fractions indicated anion and cation deficiency due to CO_3~(2-) and H~+, respectively. A relationship between nssSO_4~(2-) and NH_4~+ denoted that sulphate particles were partially neutralized (70%) by ammonium. Excess-K/BC presented two distinct ratios for winter and summer, indicating two different sources: Fossil fuel burning in winter and biomass burning in summer.
机译：在2001年4月和2002年4月，在位于地中海东北地中海海岸的农村遗址（Erdemli）收集了两级气溶胶样品（PM_（10-2.5）和PM_（2.5）。分析了581个气溶胶样品对于微量元素（Fe，Ti，Mn，Ca，V，Ni，Zn，Cr）和水溶性离子（Na〜+，NH_4〜+，K〜+，Mg〜（2+），Ca〜（2+） ，cl〜 - ，br〜 - ，no_3〜 - ，so_4〜（2-），c_2o_4〜（2-）和ms〜 - ）。^ STHE年平均PM_（10）和PM_（2.5）水平为36.4±27.8 μgm〜（-3）和9.7±5.9。由于从北非和冬季由于海浪发射，由于从北非和冬季运输的矿物粉尘，在转型期（3月，4月和5月）期间观察到最高水平的PM_（10）。然而，PM_（2.5）水平在夏季表现出较高的浓度，从而提高二次气溶胶产生。 PM_（10），地壳元素，海盐气溶胶和NO_3〜 - 主要与粗模式相关，而NSSSO_4〜（2-），C_2O_4〜（2-），MS〜 - ，NH_4〜+，CR和NI被发现主要是在罚球中。在粗糙和细气溶胶级分中进行的离子平衡分析表明阴离子和阳离子缺乏，分别由CO_3〜（2-）和H〜+。 NSSSO_4〜（2-）和NH_4〜+之间的关系表示硫酸盐颗粒通过铵部分中和（70％）。过量k / bc呈现出冬季和夏季的两个不同比例，表明两个不同的来源：冬季冬季燃烧的化石燃料和生物量燃烧。

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