本文選題：多環(huán)芳烴 + 來源�。� 參考：《武漢紡織大學(xué)》2017年碩士論文

【摘要】：多環(huán)芳烴是一類廣泛存在于環(huán)境中的具有三致作用的持久性有機(jī)污染物,土壤是環(huán)境中多環(huán)芳烴一個(gè)重要的匯,經(jīng)過各種途徑釋放進(jìn)入到大氣中的PAHs,最后都會(huì)通過干濕沉降進(jìn)入到土壤中。三峽庫區(qū)由于每年的“冬蓄夏泄”調(diào)度模式循環(huán),使得消落帶經(jīng)歷干濕交替的水位變化。消落帶土壤中的多環(huán)芳烴又會(huì)重新進(jìn)入水體,不僅造成土壤、水體的污染,而且對(duì)人類的健康產(chǎn)生了極大的威脅。本文對(duì)三峽庫區(qū)消落帶土壤中PAHs的分布、來源以及風(fēng)險(xiǎn)評(píng)價(jià)進(jìn)行了系統(tǒng)研究。旨在了解三峽庫區(qū)消落帶土壤中的PAHs的污染狀況和潛在風(fēng)險(xiǎn),為三峽庫區(qū)消落帶PAHs的污染控制和治理提供科學(xué)依據(jù)。主要研究結(jié)果如下:研究結(jié)果表明,2012年6月與9月三峽庫區(qū)消落帶土壤中16種PAHs的總含量范圍分別為18.40~392.29 ng/g(98.11 ng/g),23.30~259.22 ng/g(73.95 ng/g);2013年6月與8月三峽庫區(qū)消落帶土壤中16種PAHs的總含量范圍分別為54.00~463.08 ng/g(143.66 ng/g),63.68~558.76 ng/g(175.50 ng/g)。上游采樣點(diǎn)土壤中PAHs含量明顯高于中下游采樣點(diǎn)含量。消落帶土壤中PAHs污染樣點(diǎn)主要在上游居多,且污染物含量有增長(zhǎng)的趨勢(shì)。組成特征分析顯示,消落帶土壤中PAHs主要是以低環(huán)為主。PAHs與TOC的相關(guān)性分析結(jié)果顯示,土壤中PAHs含量與TOC沒有明顯相關(guān)性,不同環(huán)數(shù)PAHs與TOC沒有明顯相關(guān)性。由比值法分析可知,三峽庫區(qū)消落帶土壤中PAHs來源于煤、生物質(zhì)和石油類燃燒,其次是石油源。生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)表明三峽庫區(qū)消落帶土壤中PAHs生態(tài)風(fēng)險(xiǎn)較小,健康風(fēng)險(xiǎn)評(píng)價(jià)表明該區(qū)域潛在致癌風(fēng)險(xiǎn)值有增加的趨勢(shì),ILCRs值在10-9~10-6之間,表明三峽庫區(qū)消落帶土壤中PAHs的致癌風(fēng)險(xiǎn)很小。
[Abstract]:Polycyclic aromatic hydrocarbons (PAHs) are a class of environmental persistent organic pollutants (pops), and soil is an important sink of PAHs in the environment.PAHs released into the atmosphere through various channels will eventually enter the soil through wet and dry deposition.Because of the annual circulation of "winter storage and summer release" in the three Gorges Reservoir area, the water level of the fluctuating zone experienced the alternation of dry and wet.The polycyclic aromatic hydrocarbons (PAHs) in the soil will re-enter the water body, which not only causes soil and water pollution, but also poses a great threat to human health.In this paper, the distribution, source and risk assessment of PAHs in the soil of the three Gorges Reservoir area are studied systematically.The purpose of this paper is to understand the pollution status and potential risk of PAHs in the soil of the three Gorges Reservoir area, and to provide scientific basis for the control and control of PAHs pollution in the three Gorges Reservoir area.The main results are as follows: the results show that the total contents of 16 kinds of PAHs in the soil of the three Gorges area in June and September 2012 are 18.40 ~ 392.29 ng/g(98.11 / g / g ~ (23. 30) ~ 259.22 ng/g(73.95 / g ~ (-1), respectively, and the total content of 16 kinds of PAHs in the soil of the three Gorges area in June and August 2013.The range of content is 54.00 ~ 463.08 ng/g(143.66 / ng / g ~ (-1) 63.68 ~ 558.76 ng/g(175.50 / g ~ (-1).The content of PAHs in the soil of the upstream sampling site was significantly higher than that in the middle and lower reaches of the soil.The PAHs pollution samples were mainly in the upper reaches of the soil and the content of the pollutants was increasing.The results of composition analysis showed that the correlation between PAHs and TOC was mainly low ring. The results showed that there was no significant correlation between PAHs content and TOC in soil, but there was no significant correlation between PAHs and TOC in different ring numbers.According to the ratio analysis, the PAHs in the soil of the three Gorges Reservoir area is derived from the combustion of coal, biomass and petroleum, followed by the source of oil.The ecological risk assessment showed that the ecological risk of PAHs in the soil of the three Gorges Reservoir area was small, and the health risk evaluation indicated that the potential carcinogenic risk value of the region was increasing with ILCRs between 10 ~ (-9) and 10 ~ (-6).The results showed that the carcinogenic risk of PAHs in the soil of the three Gorges Reservoir area was very small.
【學(xué)位授予單位】：武漢紡織大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X53

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張家泉;胡天鵬;邢新麗;鄭煌;張麗;占長(zhǎng)林;劉紅霞;肖文勝;祁士華;;大冶湖表層沉積物-水中多環(huán)芳烴的分布、來源及風(fēng)險(xiǎn)評(píng)價(jià)[J];環(huán)境科學(xué);2017年01期

2 酈倩玉;趙中華;蔣豫;張路;;鄱陽湖周溪灣沉積物中有機(jī)氯農(nóng)藥和多環(huán)芳烴的垂直分布特征[J];湖泊科學(xué);2016年04期

3 羅東霞;張淑娟;楊瑞強(qiáng);;藏東南色季拉山土壤中有機(jī)氯農(nóng)藥和多環(huán)芳烴的濃度分布及來源解析[J];環(huán)境科學(xué);2016年07期

4 饒麗;朱振亞;;三峽庫區(qū)消落帶環(huán)境整治與生態(tài)修復(fù)調(diào)查研究[J];環(huán)境影響評(píng)價(jià);2016年03期

5 張旭;盧雙;裴晉;姚宏;于曉華;;長(zhǎng)江湖北段表層土中多環(huán)芳烴分布、來源及風(fēng)險(xiǎn)評(píng)價(jià)[J];環(huán)境科學(xué)學(xué)報(bào);2016年12期

6 孫盼盼;謝標(biāo);周迪;宋一民;楊浩;;滇池流域?qū)毾蠛铀畮斐练e物中多環(huán)芳烴的垂直分布特征及來源解析[J];環(huán)境科學(xué)學(xué)報(bào);2016年10期

7 張道來;劉娜;葉青;林學(xué)輝;田洛坤;顏冬云;孟憲偉;;青島市區(qū)表層土壤多環(huán)芳烴分布特征、來源及潛在風(fēng)險(xiǎn)[J];城市環(huán)境與城市生態(tài);2016年01期

8 李靜雅;吳迪;許蕓松;李向東;王喜龍;曾超華;付曉芳;劉文新;;長(zhǎng)江三角洲區(qū)域表土中多環(huán)芳烴的近期分布與來源[J];環(huán)境科學(xué);2016年01期

9 王欣;楊毅;陸敏;劉敏;汪青;于英鵬;武子瀾;;城市土壤不同粒徑組分PAHs污染特征[J];環(huán)境科學(xué)與技術(shù);2015年09期

10 谷超;袁培耘;梁隆超;陳卓;;阿哈水庫表層沉積物中多環(huán)芳烴的分布、來源及生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)[J];河南農(nóng)業(yè)科學(xué);2014年10期

相關(guān)碩士學(xué)位論文 前1條

1 馬瑞鵬;寒旱區(qū)湖泊表層沉積物中多環(huán)芳烴的分布、來源及生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)[D];內(nèi)蒙古大學(xué);2015年

，

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