柘林灣養(yǎng)殖底泥中毒性污染物的生態(tài)風(fēng)險及生物毒性評價
發(fā)布時間：2018-11-07 07:29
【摘要】：柘林灣是廣東省較大規(guī)模的、典型半封閉的海水箱網(wǎng)養(yǎng)殖區(qū)。其沿岸工業(yè)污染物的陸源輸入、港口通航影響和海水養(yǎng)殖自身污染等造成了柘林灣養(yǎng)殖區(qū)水體富營養(yǎng)化、沉積物底泥的硫化物污染和沉積物毒害污染物的富集。其中由于有機氯農(nóng)藥、多環(huán)芳烴和重金屬污染的持久性、生態(tài)危害及人體健康風(fēng)險而備受關(guān)注。本研究考察了柘林灣11個位點表層沉積物中20種有機氯農(nóng)藥含量分布及污染狀況,采用風(fēng)險商(RQ)和氣象管理局(NOAA)基于沉積物質(zhì)量基準(zhǔn)(SQGs)沉積物質(zhì)量標(biāo)準(zhǔn)評價了沉積物中有機氯農(nóng)藥的生態(tài)風(fēng)險和各位點的綜合生態(tài)風(fēng)險,初步分析了沉積物中六六六、滴滴涕的來源以及沉積物中有機氯農(nóng)藥與沉積物性質(zhì)參數(shù)的相關(guān)性。結(jié)果表明,柘林灣沉積物中滴滴涕的含量較高,尤其是p,p’-DDD,沉積物中滴滴涕含量超出中國海洋沉積物質(zhì)量標(biāo)準(zhǔn);沉積物中20種有機氯農(nóng)藥的總濃度(∑OCPs)在14.14~306.88 ng·g~(-1)之間,平均值為78.37 ng·g~(-1),其中S8位點的∑OCPs含量最高。p,p’-DDD、p,p’-DDT在多數(shù)研究位點具有必然的不利生物效應(yīng)和高度生態(tài)風(fēng)險,S8、S10位點處于強影響生態(tài)風(fēng)險狀態(tài)。柘林灣沉積物中HCHs主要來源于林丹類農(nóng)藥的使用;S1、S2、S10、S11位點近期均有滴滴涕的輸入,其它位點滴滴涕的主要來源是早期殘留或長期施用農(nóng)藥風(fēng)化后的沉積物。沉積物中六六六、硫丹、氯丹、狄氏劑之間存在極顯著正相關(guān)性,它們與沉積物TOC間存在負(fù)相關(guān),TOC的存在促進(jìn)了生物降解;p,p’-DDD與Ca的明顯正相關(guān)揭示了早期施用滴滴涕隨生物碳酸鹽沉積;沉積物中的顆粒物逐漸增大對OCPs在沉積物中的積累和富集是不利的。定量分析柘林灣養(yǎng)殖區(qū)表層沉積物樣品中的多環(huán)芳烴,采用RQ和SQG評價了沉積物中多環(huán)芳烴的生態(tài)風(fēng)險和各位點的綜合生態(tài)風(fēng)險,初步分析了沉積物中多環(huán)芳烴的來源以及與沉積物相關(guān)參數(shù)的相關(guān)性,為有機污染物污染控制和環(huán)境管理等提供科學(xué)依據(jù)。結(jié)果表明,柘林灣表層沉積物各位點各類多環(huán)芳烴的含量范圍是71.03-148.64 ng·g~(-1),平均值為107.87 ng·g~(-1),各PAHs的含量均值范圍為0.50-18.49 ng·g~(-1)。多環(huán)芳烴的效應(yīng)范圍低值(ERL)的風(fēng)險商(RQERL)值和各位點的根據(jù)效應(yīng)范圍中值(ERM)的計算得到的平均SQG商(mERM-Q)值均小于0.1,RQERL值絕大部分都小于0.1,數(shù)據(jù)結(jié)果表明,養(yǎng)殖區(qū)沉積物中各多環(huán)芳烴柘林灣養(yǎng)殖底泥中毒性污染物的生態(tài)風(fēng)險及生物毒性評價在各位點處的生態(tài)風(fēng)險并不明顯。柘林灣養(yǎng)殖區(qū)底泥中多環(huán)芳烴的來源主要是木柴、煤等燃燒來源或與石油燃燒來源的混合,這也可能是由于人類活動與海航交通運輸過程石油的排放。TOC、間隙水TOC、Ca的含量以及顆粒物粒徑大小對多環(huán)芳烴積累和富集皆有中等以上程度的相關(guān),且相近分子量PAHs之間存在顯著相關(guān)。分析了養(yǎng)殖區(qū)沉積物中重金屬的總量及形態(tài)分布,評價了重金屬在研究區(qū)域的富集狀況、生態(tài)風(fēng)險、生物毒性風(fēng)險、人體健康風(fēng)險及其可能來源。結(jié)果顯示,大部分研究位點Ni、Pb、As、Zn富集程度較大,屬于污染較重的元素,在網(wǎng)箱和牡蠣養(yǎng)殖位點Ni的污染嚴(yán)重;采用SQGs評價法,結(jié)果顯示As、Pb和Ni呈現(xiàn)出較高的生態(tài)風(fēng)險,柘林灣西北灣口底泥中重金屬處于最高生態(tài)風(fēng)險;采用Hakanson指數(shù)法,結(jié)果顯示Cd、As和Hg達(dá)到中度到強生態(tài)危害風(fēng)險,汛洲島周圍位點底泥中重金屬處于強生態(tài)危害風(fēng)險;采用基于重金屬形態(tài)的風(fēng)險評估準(zhǔn)則方法(RAC)評價,結(jié)果顯示養(yǎng)殖區(qū)底泥中Cd存在很高生態(tài)危害風(fēng)險,Ni主要為中等生態(tài)危害風(fēng)險;通過非殘留態(tài)硫化物與有機質(zhì)含量的函數(shù)評價方法(∑NR-AVS)/?OC,結(jié)果表明,所有采樣點沉積物中毒害重金屬的風(fēng)險值都小于150μmol/gOC,沉積物沒有預(yù)期的不利影響;人體健康評價(HQ)結(jié)果顯示,HQ值均低于1,沒有潛在的健康風(fēng)險暴露于金屬通過攝入、吸入和非致癌風(fēng)險的兒童;采用主成分分析方法分析其主要來源,結(jié)果表明,該研究區(qū)域中船只汽油和柴油的燃燒是主要的污染源。
[Abstract]:Linlin Bay is a large-scale, semi-closed mariculture area in Guangdong Province. The land-source input of the coastal industrial pollutants, the influence of the port navigation and the self-pollution of the seawater culture have resulted in the eutrophication of the water body in the culture area of the Erlin Bay, the sulfide pollution of the sediment in the sediments and the enrichment of the pollutant in the sediments. Among them, due to the persistent, ecological and human health risks of organochlorine pesticides, polycyclic aromatic hydrocarbons and heavy metal pollution. in that present study, the distribution of 20 organochlorine pesticides in the surface sediments of 11 site in the Bay of Chulin was investigated, and the pollution condition was investigated. Based on the quality standard of sediment quality (SQGs), the risk quotient (RQ) and the meteorological bureau (NOAA) were used to evaluate the ecological risk of organochlorine pesticides in the sediment and the comprehensive ecological risk of the various points. The source of DDT and the relationship between the organochlorine pesticides in the sediments and the properties of the sediment. The results showed that the content of DDT in the sediment of the sediments of the Ailin Bay was high, especially the content of the DDT in the sediments exceeded the quality standard of China's marine sediment. The total concentration of the 20 organochlorine pesticides in the sediment was between 14.14 and 306.88 ng 路 g ~ (-1), and the average value was 78. 37 ng 路 g ~ (-1). The content of OCPs in S8 is the highest. p, p '-DDD, p, p'-DDT have the necessary adverse biological effect and high ecological risk in most sites. The main source of HCHs in the sediments of the Ailin Bay is the use of the pesticides in the lindane. In the near term, the sites of S1, S2, S10, and S11 all have the input of DDT, and the main source of DDT is the early residual or long-term application of the sediments after weathering. There was a significant positive correlation between the contents of 6, 6, S, Cl, and D in the sediment, and there was a negative correlation between the TOC and TOC, and the existence of TOC promoted the biodegradation; p, p '-DDD and Ca were positively related to the early application of DDT with the biocarbonate deposition; the gradual increase of the particulate matter in the deposit is detrimental to the accumulation and enrichment of the ocps in the deposit. In this paper, the multi-cyclic aromatic hydrocarbons in the surface sediment samples in the culture area of the Ailin Bay were quantitatively analyzed. The ecological risk and the comprehensive ecological risk of the polycyclic aromatic hydrocarbons in the sediment were evaluated by RQ and SQG. The source of the polycyclic aromatic hydrocarbons and the correlation with the sediment-related parameters were preliminarily analyzed. and provides scientific basis for organic pollutant pollution control and environmental management and the like. The results showed that the content of all kinds of polycyclic aromatic hydrocarbons in the surface sediments of the Gulf of Linlin Bay was 71.03-148.64 ng 路 g ~ (-1), the average value was 107.87 ng 路 g ~ (-1), and the mean range of each PAHs was 0.50-18.49 ng 路 g ~ (-1). The average SQG quotient (mERM-Q) value obtained by the calculation of the risk quotient (RQERL) value of the multi-cyclic aromatic hydrocarbon and the value of the value (ERM) in the range of effect according to the effect range (ERM) is less than 0.1, the RQERL value is mostly less than 0.1, the data result shows that, The ecological risk and the biological toxicity of the toxic pollutants in the sediment of the culture area are not obvious at each point. The source of the polycyclic aromatic hydrocarbon in the bottom mud of the culture area in the Erlin Bay is mainly the combustion source of firewood, coal, or the mixture with the source of petroleum combustion, which may also be due to the human activity and the discharge of the oil in the transportation process of the HNA. The content of TOC, TOC, Ca and the particle size of the particulate matter are related to the accumulation and enrichment of polycyclic aromatic hydrocarbons, and there is a significant correlation between the similar molecular weight PAHs. The total amount and distribution of heavy metals in the sediment of the culture area were analyzed, and the enrichment status, the ecological risk, the biological toxicity risk, the human health risk and the possible sources of the heavy metals in the research area were evaluated. The results showed that the concentration of Ni, Pb, As and Zn in most of the sites was high, and it was a heavy element. The pollution of Ni in the cage and the oyster breeding site was serious. The SQGs were used to evaluate the results. As a result, the results showed that As, Pb and Ni exhibited higher ecological risk. The highest ecological risk of heavy metals in the sediment of the Bay of the northwest of the Yilin Bay is the highest ecological risk. The Hakanson index method is used to show that the Cd, As and Hg reach the risk of moderate to strong ecological harm, and the heavy metal in the bottom mud in the surrounding site of the flood island is at the risk of strong ecological harm; The method of risk assessment based on heavy metal form (RAC) was used to evaluate the risk of high ecological risk of Cd in the sediment of culture area, and the risk of medium ecological harm was mainly found in Ni. The method for evaluating the content of non-residual sulfide and organic matter (NNR-AVS)/? OC, the results show that the risk value of toxic heavy metals in all sampling point deposits is less than 150. m u.mol/ gOC, and that the sediment is not expected to be adversely affected; the results of the human health assessment (HQ) show that the HQ value is less than 1 and no potential health risk is exposed to the metal by ingestion, The primary source of the study was analyzed by the principal component analysis method. The results show that the combustion of the vessel gasoline and diesel oil in the study area is the main source of pollution.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X826;X55
本文編號：2315647
[Abstract]:Linlin Bay is a large-scale, semi-closed mariculture area in Guangdong Province. The land-source input of the coastal industrial pollutants, the influence of the port navigation and the self-pollution of the seawater culture have resulted in the eutrophication of the water body in the culture area of the Erlin Bay, the sulfide pollution of the sediment in the sediments and the enrichment of the pollutant in the sediments. Among them, due to the persistent, ecological and human health risks of organochlorine pesticides, polycyclic aromatic hydrocarbons and heavy metal pollution. in that present study, the distribution of 20 organochlorine pesticides in the surface sediments of 11 site in the Bay of Chulin was investigated, and the pollution condition was investigated. Based on the quality standard of sediment quality (SQGs), the risk quotient (RQ) and the meteorological bureau (NOAA) were used to evaluate the ecological risk of organochlorine pesticides in the sediment and the comprehensive ecological risk of the various points. The source of DDT and the relationship between the organochlorine pesticides in the sediments and the properties of the sediment. The results showed that the content of DDT in the sediment of the sediments of the Ailin Bay was high, especially the content of the DDT in the sediments exceeded the quality standard of China's marine sediment. The total concentration of the 20 organochlorine pesticides in the sediment was between 14.14 and 306.88 ng 路 g ~ (-1), and the average value was 78. 37 ng 路 g ~ (-1). The content of OCPs in S8 is the highest. p, p '-DDD, p, p'-DDT have the necessary adverse biological effect and high ecological risk in most sites. The main source of HCHs in the sediments of the Ailin Bay is the use of the pesticides in the lindane. In the near term, the sites of S1, S2, S10, and S11 all have the input of DDT, and the main source of DDT is the early residual or long-term application of the sediments after weathering. There was a significant positive correlation between the contents of 6, 6, S, Cl, and D in the sediment, and there was a negative correlation between the TOC and TOC, and the existence of TOC promoted the biodegradation; p, p '-DDD and Ca were positively related to the early application of DDT with the biocarbonate deposition; the gradual increase of the particulate matter in the deposit is detrimental to the accumulation and enrichment of the ocps in the deposit. In this paper, the multi-cyclic aromatic hydrocarbons in the surface sediment samples in the culture area of the Ailin Bay were quantitatively analyzed. The ecological risk and the comprehensive ecological risk of the polycyclic aromatic hydrocarbons in the sediment were evaluated by RQ and SQG. The source of the polycyclic aromatic hydrocarbons and the correlation with the sediment-related parameters were preliminarily analyzed. and provides scientific basis for organic pollutant pollution control and environmental management and the like. The results showed that the content of all kinds of polycyclic aromatic hydrocarbons in the surface sediments of the Gulf of Linlin Bay was 71.03-148.64 ng 路 g ~ (-1), the average value was 107.87 ng 路 g ~ (-1), and the mean range of each PAHs was 0.50-18.49 ng 路 g ~ (-1). The average SQG quotient (mERM-Q) value obtained by the calculation of the risk quotient (RQERL) value of the multi-cyclic aromatic hydrocarbon and the value of the value (ERM) in the range of effect according to the effect range (ERM) is less than 0.1, the RQERL value is mostly less than 0.1, the data result shows that, The ecological risk and the biological toxicity of the toxic pollutants in the sediment of the culture area are not obvious at each point. The source of the polycyclic aromatic hydrocarbon in the bottom mud of the culture area in the Erlin Bay is mainly the combustion source of firewood, coal, or the mixture with the source of petroleum combustion, which may also be due to the human activity and the discharge of the oil in the transportation process of the HNA. The content of TOC, TOC, Ca and the particle size of the particulate matter are related to the accumulation and enrichment of polycyclic aromatic hydrocarbons, and there is a significant correlation between the similar molecular weight PAHs. The total amount and distribution of heavy metals in the sediment of the culture area were analyzed, and the enrichment status, the ecological risk, the biological toxicity risk, the human health risk and the possible sources of the heavy metals in the research area were evaluated. The results showed that the concentration of Ni, Pb, As and Zn in most of the sites was high, and it was a heavy element. The pollution of Ni in the cage and the oyster breeding site was serious. The SQGs were used to evaluate the results. As a result, the results showed that As, Pb and Ni exhibited higher ecological risk. The highest ecological risk of heavy metals in the sediment of the Bay of the northwest of the Yilin Bay is the highest ecological risk. The Hakanson index method is used to show that the Cd, As and Hg reach the risk of moderate to strong ecological harm, and the heavy metal in the bottom mud in the surrounding site of the flood island is at the risk of strong ecological harm; The method of risk assessment based on heavy metal form (RAC) was used to evaluate the risk of high ecological risk of Cd in the sediment of culture area, and the risk of medium ecological harm was mainly found in Ni. The method for evaluating the content of non-residual sulfide and organic matter (NNR-AVS)/? OC, the results show that the risk value of toxic heavy metals in all sampling point deposits is less than 150. m u.mol/ gOC, and that the sediment is not expected to be adversely affected; the results of the human health assessment (HQ) show that the HQ value is less than 1 and no potential health risk is exposed to the metal by ingestion, The primary source of the study was analyzed by the principal component analysis method. The results show that the combustion of the vessel gasoline and diesel oil in the study area is the main source of pollution.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X826;X55
【參考文獻(xiàn)】
相關(guān)期刊論文 前8條
1 吳銳;雷永乾;王暢;郭鵬然;潘佳釧;;粵東柘林灣養(yǎng)殖區(qū)海水富營養(yǎng)化評價[J];環(huán)境科學(xué)與技術(shù);2015年10期
2 王暢;夏冰;王冠華;宋玉梅;吳凌濤;郭鵬然;;缺氧沉積物中重金屬形態(tài)連續(xù)萃取方法的穩(wěn)定性研究[J];分析測試學(xué)報;2012年04期
3 郭建陽;廖海清;韓梅;黎文;張潤宇;王靜;吳豐昌;;密云水庫沉積物中多環(huán)芳烴的垂直分布、來源及生態(tài)風(fēng)險評估[J];環(huán)境科學(xué);2010年03期
4 李慶召;李國新;羅專溪;張嫻;顏昌宙;;廈門灣海域表層沉積物重金屬和多環(huán)芳烴污染特征及生態(tài)風(fēng)險評價[J];環(huán)境化學(xué);2009年06期
5 謝文平;朱新平;陳昆慈;聶湘平;鄭光明;羅建仁;潘德博;王少冰;;珠江口水體、沉積物及水生動物中HCHs和DDTs的含量與生態(tài)風(fēng)險評價[J];環(huán)境科學(xué)學(xué)報;2009年09期
6 陳卓敏;高效江;宋祖光;麥碧嫻;;杭州灣潮灘表層沉積物中多環(huán)芳烴的分布及來源[J];中國環(huán)境科學(xué);2006年02期
7 胡雄星,韓中豪,周亞康,程金平,王文華;黃浦江表層沉積物中有機氯農(nóng)藥的分布特征及風(fēng)險評價[J];環(huán)境科學(xué);2005年03期
8 王新紅 ,徐立 ,陳偉琪 ,張珞平 ,洪華生;THE VERTICAL DISTRIBUTIONS AND SOURCES OF PAHs IN SEDIMENT OF XIAMEN BAY[J];Chinese Journal of Oceanology and Limnology;1999年03期
相關(guān)會議論文 前1條
1 王斌;余剛;郁亞娟;張祖麟;胡洪營;王連生;;淮河江蘇段水體有機氯農(nóng)藥生態(tài)風(fēng)險評價[A];持久性有機污染物論壇2006暨第一屆持久性有機污染物全國學(xué)術(shù)研討會論文集[C];2006年
，本文編號：2315647
本文鏈接：http://sikaile.net/shengtaihuanjingbaohulunwen/2315647.html
最近更新
教材專著
