【摘要】：新粒子生成與增長是一個(gè)從分子到納米顆粒物的微觀尺度演變過程,對(duì)區(qū)域到全球尺度空氣質(zhì)量和氣候造成顯著影響.總結(jié)了國內(nèi)外對(duì)新粒子生成與增長物理化學(xué)機(jī)制的研究進(jìn)展和局限性.提出以揭示新粒子生成、增長及其產(chǎn)生環(huán)境效應(yīng)的機(jī)制為核心目標(biāo),利用外場觀測、煙霧箱模擬和模式模擬等多種手段,開發(fā)和應(yīng)用先進(jìn)的研究技術(shù),辨識(shí)參與并促使快速成核的關(guān)鍵前體物種,弄清驅(qū)動(dòng)新粒子初始和后續(xù)增長的化學(xué)和物理機(jī)制,以揭示大氣復(fù)合污染條件下快速成核和持續(xù)增長的條件與機(jī)制并評(píng)價(jià)新粒子對(duì)大氣環(huán)境的影響.在全面理解大氣復(fù)合污染條件下成核和增長機(jī)制及其環(huán)境效應(yīng)的基礎(chǔ)上提高對(duì)區(qū)域霾形成機(jī)制的認(rèn)識(shí),也推進(jìn)國際相關(guān)領(lǐng)域?qū)ξ廴敬髿猸h(huán)境新粒子生成與增長機(jī)制普遍性和差異性的研究.
[Abstract]:The formation and growth of new particles is a microscopic evolution process from molecules to nanoparticles, which has a significant impact on air quality and climate from regional to global scales. The research progress and limitations of physicochemical mechanism of new particle formation and growth at home and abroad are summarized. In order to reveal the mechanism of new particle formation, growth and environmental effects as the core goal, advanced research techniques are developed and applied by means of external field observation, smoke box simulation and model simulation. Identify key precursor species involved in and facilitate rapid nucleation and identify the chemical and physical mechanisms that drive the initial and subsequent growth of new particles, In order to reveal the conditions and mechanisms of rapid nucleation and sustained growth under the condition of air compound pollution, and to evaluate the influence of new particles on the atmospheric environment. On the basis of a comprehensive understanding of the nucleation and growth mechanism and its environmental effects under the condition of air complex pollution, to raise the understanding of the regional haze formation mechanism, It also promotes the study of the universality and difference of the mechanism of new particle formation and growth in polluted atmospheric environment in relevant fields of the world.
【作者單位】： 環(huán)境模擬與污染控制國家重點(diǎn)聯(lián)合實(shí)驗(yàn)室北京大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金(Nos.91544214;21190052,41121004) 國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(No.2013CB228503) 中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(xiàng)(No.XDB05010500)資助~~
【分類號(hào)】：X513

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