本文選題：工業(yè)區(qū) + O3��； 參考：《南京信息工程大學(xué)》2015年碩士論文

【摘要】：03在全球和區(qū)域大氣環(huán)境變化中起著至關(guān)重要的作用,它不僅對(duì)大氣輻射系統(tǒng)有重要影響,而且對(duì)城市大氣造成明顯的環(huán)境效應(yīng)。本文以南京江北外場觀測資料為基礎(chǔ),對(duì)大氣中03及其前體物濃度和氣象要素的變化關(guān)系進(jìn)行了分析研究；深入分析了03等污染氣體的相互影響,對(duì)天氣因素對(duì)大氣污染物濃度影響做了分析。主要研究內(nèi)容如下：1)南京北郊夏季O3、NOx、CO和VOCs等的平均體積分?jǐn)?shù)分別為(32.0±15.2)x10-9、(21.5±14.0)×10-9、(0.6±0.4)×10-6和(33.1±25.2)×10-9；按新的國家二級(jí)標(biāo)準(zhǔn),觀測期間03超標(biāo)14.1%;有11d霾天,占整個(gè)觀測期間的11.1%。2)南京四個(gè)站點(diǎn)的03濃度概率分布曲線較為相似,反映出南京大氣03污染區(qū)域混合性較好。而NO和CO的概率分布曲線存在區(qū)域差異。03濃度日變化呈現(xiàn)單峰型分布,日最高值出現(xiàn)在午后14時(shí)左右,而日最低值一般出現(xiàn)在早上7時(shí)左右。3)周邊源排放對(duì)03前體物體積分?jǐn)?shù)影響較大。在偏東風(fēng)主導(dǎo)下NOx、CO和VOCs體積分?jǐn)?shù)易出現(xiàn)高值；在西南風(fēng)控制下,大氣中一些光化學(xué)活性較高的組分,如烯烴的等量丙烯體積分?jǐn)?shù)較高,03體積分?jǐn)?shù)也容易累積到高值。當(dāng)?shù)豓OCs/NOx(體積分?jǐn)?shù)之比)的值在2.0左右有利于03的生成,VOCs/NOx值過高時(shí)可能反而不利于03的生成。4)南京北郊臭氧產(chǎn)生效率(OPE)為2.17士0.12；OPE值隨NOx體積濃度變化規(guī)律近似于一階負(fù)指數(shù)形式。5) NUIST站點(diǎn)03濃度是在VOCs和NOx共同控制下產(chǎn)生。03產(chǎn)生過程中,烯烴和芳香烴的貢獻(xiàn)最大。NO由于滴定作用對(duì)03產(chǎn)生起到負(fù)作用。
[Abstract]:03 plays an important role in the global and regional atmospheric environment changes, which not only has an important influence on the atmospheric radiation system, but also has an obvious environmental effect on the urban atmosphere. Based on the observation data of the outfield in the north of Nanjing, this paper analyses the relationship between the concentration of 03 and its precursors and the meteorological elements in the atmosphere. The interaction of 03 polluted gases and the influence of weather factors on the concentration of air pollutants are analyzed. The main contents are as follows: 1) the average volume fraction of O3, NOx, CO and VOCs in Nanjing Beijiao in summer is (32 + 15.2) x10-9, (21.5 + 14) x 10-9, (0.6 + 0.4) * 10-6 and (33.1 + 25.2) * 10-9; according to the new country The two level standard, during the observation period 03 exceeded the standard 14.1%; with 11d haze days, accounting for the whole observation period of 11.1%.2), the 03 concentration probability distribution curve of Nanjing four sites is similar, reflecting the 03 polluted region of the atmosphere is better mixed, while the probability distribution curve of NO and CO has regional difference.03 concentration diurnal variation showing a single peak distribution, the daily maximum value is out. Now around 14 hours in the afternoon, and the daily minimum value usually appears at about.3 in the morning at about 7 hours.) the emission of peripheral sources has a greater impact on the volume fraction of 03 precursors. Under the dominance of the easterly wind, the volume fraction of CO and VOCs is easy to appear. Under the control of the southwest wind, some of the higher photochemical activity in the atmosphere, such as the volume fraction of the alkene, is compared. High, 03 volume fraction is also easy to accumulate to high value. The value of local VOCs/NOx (volume fraction ratio) is around 2 in favor of 03 generation, and when the VOCs/NOx value is too high, it may not be beneficial to the formation of 03.4). The ozone production efficiency (OPE) in Nanjing is 2.17 st 0.12, and the OPE value with NOx volume concentration is similar to the first order negative exponential.5 NUIST. The 03 concentration of site 03 is produced under the co control of VOCs and NOx, and the maximum contribution of olefin and aromatic hydrocarbons is.NO due to the negative effect of titration on 03.
【學(xué)位授予單位】：南京信息工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X51

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