本文選題：天津 + 冬季　； 參考：《中國(guó)環(huán)境科學(xué)》2017年04期

【摘要】：基于污染物濃度、顆粒物化學(xué)組分及氣象參數(shù)等觀測(cè)數(shù)據(jù),綜合分析天津市2015年冬季典型重污染過(guò)程成因及污染特征,結(jié)果表明:天津市冬季重污染期間風(fēng)速0~4.0m/s,相對(duì)濕度80%以上,混合層高度僅為清潔天氣的1/3~1/2,靜穩(wěn)高濕的大氣環(huán)境對(duì)重污染影響較大.重污染過(guò)程N(yùn)O_2/SO_2比值較清潔天氣低,NO_3~-/SO_4~(2-)比值大于1,表明重污染期間天津市移動(dòng)源與固定源并重.重污染PM_(2.5)/PM_(10)比值較清潔天氣高,PM_1/PM_(2.5)比值較清潔天氣低,可能與重污染過(guò)程期間細(xì)粒子的吸濕增長(zhǎng)以及散煤燃燒排放有關(guān).污染初期NOR大于SOR,隨著重污染持續(xù),u6于受制于氨,SOR要高于NOR,需關(guān)注氣態(tài)前體物尤其是SO_2排放.OC與EC濃度高時(shí)二者相關(guān)性較低,SOC占OC的20%~54%,說(shuō)明冬季重污染期間散煤燃燒源和二次有機(jī)化學(xué)反應(yīng)對(duì)冬季重污染影響較大.
[Abstract]:Based on the observation data of pollutant concentration, particulate chemical composition and meteorological parameters, the causes and characteristics of typical heavy pollution process in 2015 winter in Tianjin were analyzed. The results show that during winter heavy pollution in Tianjin, the wind speed is 0 ~ 4.0 m / s, the relative humidity is more than 80%, the height of mixing layer is only 1 / 3 / 1 / 2 of that of clean weather, and the atmospheric environment with static stability and high humidity has a great influence on heavy pollution. The ratio of no _ 2 / so _ 2 in heavy pollution process is lower than that in clean weather. The ratio of no _ 2 / so _ 4 ~ (2-) is higher than 1, which indicates that the moving source and the fixed source in Tianjin are equal to each other during the heavy pollution period. The ratio of PM2.5 / PM10 in heavy pollution is higher than that in clean weather, and the ratio of PM2.5 / PM2.5 is lower than that in clean weather, which may be related to the increase of moisture absorption of fine particles and the emission from coal combustion during heavy pollution. In the initial stage of pollution, nor is greater than sor, and with the heavy pollution sustained by ammonia sor, it is higher than NOR. it is necessary to pay attention to gaseous precursors, especially when the concentration of SO2 and EC is high, and the correlation between them is lower than that of OC, indicating that the bulk coal is dispersed in winter during heavy pollution period, especially when the concentration of SO2 and EC is high. Combustion source and secondary organic chemical reaction have great influence on heavy pollution in winter.
【作者單位】： 天津市環(huán)境監(jiān)測(cè)中心;南開(kāi)大學(xué);天津市氣象科學(xué)研究所;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC0208500) 國(guó)家科技支撐計(jì)劃(2014BAC23B00) 天津市重大科技專項(xiàng)(工程)項(xiàng)目(14ZCDGSF00027) 天津市科技計(jì)劃項(xiàng)目(15YFYSSF00030)
【分類號(hào)】：X51

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊孝文;周穎;程水源;王剛;王曉琦;;北京冬季一次重污染過(guò)程的污染特征及成因分析[J];中國(guó)環(huán)境科學(xué);2016年03期

2 李令軍;王占山;張大偉;陳添;姜磊;李云婷;;2013~2014年北京大氣重污染特征研究[J];中國(guó)環(huán)境科學(xué);2016年01期

3 祁妙;朱彬;潘晨;蘇繼鋒;;長(zhǎng)江三角洲冬季一次低能見(jiàn)度過(guò)程的地區(qū)差異和氣象條件[J];中國(guó)環(huán)境科學(xué);2015年10期

4 肖致美;李鵬;陳魁;孫韌;馮銀廠;劉寶順;喬春明;;天津市大氣降水化學(xué)組成特征及來(lái)源分析[J];環(huán)境科學(xué)研究;2015年07期

5 王占山;李云婷;孫峰;邱啟鴻;張大偉;姜磊;周一鳴;潘麗波;;2014年10月上旬北京市大氣重污染分析[J];中國(guó)環(huán)境科學(xué);2015年06期

6 程念亮;李云婷;張大偉;聶滕;邱啟鴻;徐文帥;;2013年1月北京市一次空氣重污染成因分析[J];環(huán)境科學(xué);2015年04期

7 沈鐵迪;王體健;陳璞瓏;蔣自強(qiáng);;南京城區(qū)夏秋季能見(jiàn)度與PM_(2.5)化學(xué)成分的關(guān)系[J];中國(guó)環(huán)境科學(xué);2015年03期

8 姚青;蔡子穎;韓素芹;劉愛(ài)霞;劉敬樂(lè);;天津冬季相對(duì)濕度對(duì)氣溶膠濃度譜分布和大氣能見(jiàn)度的影響[J];中國(guó)環(huán)境科學(xué);2014年03期

9 高健;張?jiān)?，

本文編號(hào)：2097973