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首页> 外文期刊>Atmosphere >Contribution from Selected Organic Species to PM 2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary
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Contribution from Selected Organic Species to PM 2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary

机译：在匈牙利K-Puszta举行的夏季野外运动中，部分有机物种对PM 2.5气溶胶的贡献

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A summer field campaign was conducted at the forested background site of K-puszta in Hungary. The main aim was to assess the contribution of terpene-derived particulate organic compounds to the PM 2.5 organic carbon (OC) and of the secondary organic carbon (SOC) from ???±-pinene to the OC. The study lasted from 24 May to 29 June 2006; the first half the weather was cold, while the second half was warm. Separate daytime and night-time PM 2.5 samples were collected with a high-volume sampler and the samples were analysed by several analytical techniques, including ion chromatography (IC) and liquid chromatography?￠????mass spectrometry (LC/MS). The latter technique was used for measuring the terpene-derived species. Ancillary high time resolution measurements of volatile organic compounds (VOCs) were made with proton-transfer reaction?￠????mass spectrometry. The temporal and diurnal variability of the particulate compounds and VOCs and interrelationships were examined. It was found that the monoterpenes and a number of terpene-derived particulate compounds, such as cis -pinic and cis -caric acid, exhibited a strong dayight difference during the warm period, with about 10 times higher levels during the night-time. During the warm period, the IC compounds and LC/MS compounds accounted, on average, for 3.1% and 2.0%, respectively, of the OC, whereas the contribution of SOC from ???±-pinene to the OC was estimated at a minimum of 7.1%.
机译：夏季野战在匈牙利K-puszta的森林背景站点进行。主要目的是评估萜烯衍生的颗粒状有机化合物对PM 2.5有机碳（OC）和次级有机碳（SOC）从α-pine烯到OC的贡献。该研究于2006年5月24日至6月29日进行。上半部分天气寒冷，而下半部分天气温暖。使用大容量采样器分别收集白天和晚上的PM 2.5样品，并通过多种分析技术对样品进行分析，包括离子色谱（IC）和液相色谱-质谱（LC / MS）。后一种技术用于测量萜烯衍生的物种。质子转移反应质谱法对挥发性有机化合物（VOC）进行了辅助的高时间分辨率测量。检查了颗粒化合物和VOC的时间和昼夜变化以及相互关系。发现单萜和许多萜烯衍生的颗粒化合物，例如顺式-羽状酸和顺式-甲酸，在温暖的时期表现出强烈的昼夜差异，夜间的含量高出约十倍。 。在温暖时期，IC化合物和LC / MS化合物平均分别占OC的3.1％和2.0％，而SOC由--pine烯对OC的贡献估计为。最低7.1％。

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