本文選題：濕季 + 干季��； 參考：《環(huán)境科學(xué)學(xué)報(bào)》2017年01期

【摘要】：利用廣州氣象臺(tái)2011年地面逐時(shí)能見度和相對(duì)濕度數(shù)據(jù),以及廣州番禺南村大氣成分站2011年逐時(shí)Marga數(shù)據(jù)、PM數(shù)據(jù),對(duì)比分析了一次濕季(4—9月)灰霾過程和干季(10月—次年3月)灰霾過程的污染特征.研究表明,相對(duì)干季灰霾過程,濕季灰霾過程顆粒物濃度較低,且細(xì)粒子所占比例較高;由于濕季較干季光化學(xué)反應(yīng)較為活躍及可能受氣象因素的不同影響,導(dǎo)致干濕季灰霾過程顆粒物濃度的總體變化趨勢(shì)相反;濕季灰霾過程二次無機(jī)離子(SO_4~(2-)、NH_4~+和NO_3~-)占PM_(2.5)質(zhì)量百分比的76%,是PM_(2.5)的主要成分;干季灰霾過程二次無機(jī)離子(SO_4~(2-)、NH_4~+和NO_3~-)僅占PM_(2.5)質(zhì)量百分比的34%;濕季硫氧化率(Sulfur Oxidation Ratio,SOR)、氮氧化率(Nitrogen Oxidation Ratio,NOR)值大于干季,說明二次離子對(duì)濕季灰霾的貢獻(xiàn)比干季要大;濕季灰霾過程中氣溶膠酸性比干季弱.根據(jù)相關(guān)性分析結(jié)果可知,濕季灰霾過程中,NH_4~+主要與SO_4~(2-)結(jié)合,Na+主要與Cl-及NO_3~-結(jié)合,K+主要與Cl-和NO_3~-結(jié)合,極少部分與SO_4~(2-)結(jié)合;而在干季灰霾過程中,NH_4~+除了與SO_4~(2-)結(jié)合之外,還以NH_4NO_3和NH_4Cl的形式存在,K~+主要與Cl~-和SO_4~(2-)結(jié)合,Na+主要與Cl~-及SO_4~(2-)結(jié)合.
[Abstract]:The hourly visibility and relative humidity data of Guangzhou Meteorological Station in 2011 and the hourly Marga data of Guangzhou Panyu Village Atmospheric composition Station in 2011 are used. The pollution characteristics of haze process in the first wet season (April to September) and in the dry season (from October to March) were compared and analyzed. The results show that the concentration of particulate matter is lower and the proportion of fine particles is higher in the wet season than in the dry season, because the photochemical reaction is more active in the wet season than in the dry season and may be affected by different meteorological factors. The total change trend of particulate matter concentration in the process of haze in dry and wet seasons is opposite, and the main component of PMSP 2.5 is the 76% of the mass percent of the secondary inorganic ion so _ 4 ~ and no _ 3 ~ -) in the process of haze in the dry and wet season, and the percentage of NH _ 4 ~ and no _ 3 ~ (-) in PMN _ (2.5) in the process of haze and haze in the dry and wet seasons. The secondary inorganic ions in the dry season haze process only account for 34% of the mass of PMSP, and the oxidation rate of sulfur in wet season is higher than that in dry season, which indicates that the contribution of the second ion to the smog in wet season is higher than that in dry season, and the oxidation rate of sulfur in wet season is higher than that in dry season, which indicates that the contribution of the second ion to the haze in wet season is higher than that in dry season, and the ratio of nitrogen oxidation is higher than that in dry season. The ratio of nitrogen oxidation is higher than that of dry season, indicating that the contribution of the second ion to wet season haze is higher than that of dry season. The acidity of aerosol in wet season haze is weaker than that in dry season. According to the results of correlation analysis, during the wet season haze process, NH _ 4s ~ is mainly combined with so _ 4 / C _ 2) Na and Na are mainly combined with Cl- and no _ 3s / K, and few with so _ 4 / T _ 2), while in dry season haze, NH _ 4 ~ is combined with so _ (4) ~ (2), while in dry season haze, NH _ 4 ~ is combined with so _ (4) ~ (2). In the form of NH_4NO_3 and NH_4Cl, K ~ is mainly bound with ClC- and SO4C4C ~ (2) and Na is mainly bound with ClC- and SO4- (2).
【作者單位】： 暨南大學(xué)大氣環(huán)境安全與污染控制研究所;廣東省大氣污染在線源解析系統(tǒng)工程技術(shù)研究中心;中山大學(xué)大氣科學(xué)學(xué)院;中國(guó)氣象局廣州熱帶海洋氣象研究所;
【基金】：國(guó)家自然科學(xué)基金(No.41475004)~~
【分類號(hào)】：X513

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