發(fā)布時間：2018-02-24 05:45

  本文關(guān)鍵詞： 手口途徑 污染顆粒物 PAHs 概率風(fēng)險模型 蒙特卡羅模擬 致癌風(fēng)險　出處：《環(huán)境科學(xué)》2017年10期 　論文類型：期刊論文

【摘要】：為評價居民經(jīng)手口途徑暴露于被PAHs污染室外土壤和室內(nèi)灰塵顆粒的致癌風(fēng)險以及與之相關(guān)各個參數(shù)的重要程度,本文構(gòu)建了經(jīng)手口途徑暴露于這兩種顆粒物的概率風(fēng)險模型,運用蒙特卡羅模擬方法評價了居民的致癌風(fēng)險,探究了主要的風(fēng)險來源及關(guān)鍵的暴露參數(shù).結(jié)果表明,幼兒、兒童和青少年所承受的風(fēng)險較大;嬰兒、成年人和老年人較小.嬰兒致癌風(fēng)險超過10~(-6)的概率為2%左右;幼兒和青少年超過10~(-6)的概率在5%左右,但不超過10~(-4);兒童超過10~(-6)的概率在15%左右,有0.1%左右的概率超過10~(-4);成年人和老年人超過10~(-6)的概率分別在1%和0.1%左右.室內(nèi)灰塵顆粒是主要的風(fēng)險來源,占91%左右;室內(nèi)硬表面灰塵是室內(nèi)致癌風(fēng)險的主要來源,占65%左右.與致癌風(fēng)險相關(guān)性最大的因素為:手口途徑發(fā)生的頻次(FQ)、灰塵顆粒中PAHs的等效斜率(PEFj)、灰塵在室內(nèi)硬表面的含量(DSLHS)、顆粒物從手掌皮膚表面到口腔的轉(zhuǎn)移率(SE)和灰塵在室內(nèi)軟表面的含量(DSLSS).
[Abstract]:Through oral route for the evaluation of residents exposed to PAHs contaminated soil and outdoor indoor dust particles of carcinogenic risk and related parameters of importance, this paper constructs the risk probability model through oral route exposed to these two kinds of particles, using Monte Carlo evaluation of the residents carcinogenic risk simulation method, to explore the main risk the source and key exposure parameters. The results showed that infants, children and adolescents suffer greater risk; infants, adults and the elderly are smaller. Baby cancer risk more than 10~ (-6) the probability is about 2%; children and adolescents over 10~ (-6) the probability of around 5%, but not more than 10~ (-4) children; more than 10~ (-6) in the probability of about 15%, about 0.1% of the probability of more than 10~ (-4); adults and the elderly over 10~ (-6) probability respectively in 1% and 0.1%. The indoor dust particles is the main risk to 婧，

本文編號：1529098