The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance
-
摘要: 本文对湛江湾湾内、湾口和湾外柱状沉积物n-alkanes和PAHs的空间分布、成分谱特征和排放源进行调查分析。结果表明:(1)n-alkanes和PAHs的空间分布一致,浓度水平由高到低依次为:湾内、湾口、湾外,垂直变化不明显;(2)n-alkanes和PAHs的成分谱和L/H、CPI、Ant/(Ant+Phe)、Flu/(Flu+Pyr)、BaA/(BaA+Chry)、IP/(IP+BghiP)等特征参数比值以及主成分分析结果表明C25~C35高碳数n-alkanes的高等植物贡献具有绝对优势,C14~C24中低碳数的n-alkanes和PAHs则有共同的石油、化石燃料燃烧和生物质燃烧等人为源;(3)C14~C24中低碳n-alkanes与PAHs的源解析结果相同,其线性相关系数在0.67以上,表明两者具有较好的相关性,但两者之间的定量关系还需进一步的研究。本研究表明n-alkanes和PAHs对人为源的指示具有一致性,两者具有良好的相关性,能够较好地反映城市的社会经济状况,在进一步的研究中可以建立两者之间的定量关系并形成新的参数,提高人为源解析结果的准确性,深入反映人类活动对海洋环境的影响。Abstract: Spatial distribution and components of n-alkanes and PAHs in the core sediments were investigated in Zhanjiang bay, and their different and common sources were discussed by methods of principal component analysis, correlation analysis and ratios of L/H, CPI, Ant/(Ant+Phe), Flu/(Flu+Pyr), BaA/(BaA+Chry) and IP/(IP+BghiP). This study aimed to found the different and common characteristics of n-alkane and PAHs from human activities, and future discussed their sources and effects of human activity on marine environment. Both of n-alkanes and PAHs had the same spatial distributions. Their levels were higher in bay and lower in out of bay but non-significant changes in vertical sediment samples. The CPI, results of principal component analysis, components spectrum of n-alkane and PAHs and the ratios showed that high molecular n-alkanes (C25~C35) were predominantly from higher plants but C14~C24 n-alkanes were from anthropogenic sources of oil leakage, fossil fuel combustion and biomass burning as the sources of PAHs. The results of this study indicated that n-alkanes and PAHs had the same anthropogenic sources and good correlation but their quantitative relation need further study, and both of them can be used to disused the effects of human activities on marine environment.
-
Key words:
- core sediments /
- n-alkanes /
- PAHs /
- molecular characteristic /
- environmental indication significance
-
Silva T R,Lopes S R P,Spörl G,et al. Evaluation of anthropogenic inputs of hydrocarbons in sediment cores from a tropical Brazilian estuarine system[J]. Microchemical Journal,2013,109:178-188. Lamparczyk H,Ochocka R J,Gryzbowski J,et al. Parameters related to pollution by n-alkanes and PAH in Baltic water and sediments[J]. Marine Pollution Bulletin,1988,19(5):222-226. Yunker M B,Macdonald R W,Snowdon L R,et al. Alkane and PAH biomarkers as tracers of terrigenous organic carbon in Arctic Ocean sediments[J]. Organic Geochemistry,2011,42(9):1109-1146. Harris K A,Yunker M B,Dangerfield N,et al. Sediment-associated aliphatic and aromatic hydrocarbons in coastal British Columbia,Canada:concentrations,composition,and associated risks to protected sea otters[J]. Environmental Pollution,2011,159(10):2665-2674. 杨丹,姚龙奎,王方国,等. 南海现代沉积物中正构烷烃碳分子组合特征及其指示意义[J]. 海洋学研究,2006,24(4):29-39. Yang Dan,Yao Longkui,Wang Fangguo,et al. The molecular assemblace features of n-alkanes in modern sediments from the South China Sea and their significance[J]. Journal of Marine Science,2006,24(4):29-39. 韩雪,马启敏,周华,等. 渤海典型海域表层沉积物正构烷烃特征比较[J]. 环境化学,2012,31(9):1315-1320. Han Xue,Ma Qimin,Zhou Hua,et al. Normal alkanes charateristics in the surface sediments from typical Bohai Sea areas[J]. Environmental Chemistry,2012,31(9):1315-1320. Wagener A D L R,Meniconi M D F G,Hamacher C,et al. Hydrocarbons in sediments of a chronically contaminated bay:the challenge of source assignment[J]. Marine Pollution Bulletin,2012,64(2):284-294. Gao X L,Chen S Y,Long A M. Composition and sources of organic matter and its solvent extractable components in surface sediments of a bay under serious anthropogenic influences:Daya Bay,China[J]. Marine Pollution Bulletin,2008,56(6):1066-1075. Geng C M,Chen J H,Yang X Y,et al. Emission factors of polycyclic aromatic hydrocarbons from domestic coal combustion in China[J]. Journal of Environmental Sciences,2014,26(1):160-166. 张爱军,毕新慧,盛国英,等. 广州市大气污染源中多环芳烃·正构烷烃含量及特征[J]. 安徽农业科学,2010,38(24):13158-13161,13179. Zhang Aijun,Bi Xinhui,Sheng Guoying,et al. Content and characteristics of PAHs and n-alkanes in air pollution sources of Guangzhou City[J]. Journal of Anhui Agricultural Sciences,2010,38(24):13158-13161,13179. 王超,张霖琳,刀谞,等. 京津冀地区城市空气颗粒物中多环芳烃的污染特征及来源[J]. 中国环境科学,2015,35(1):1-6. Wang Chao,Zhang Linlin,Dao Xu,et al. Pollution characteristics and source identification of polycyclic aromatic hydrocarbons in airborne particulates of Beijing-Tianjin-Hebei Region,China[J]. China Environmental Science,2015,35(1):1-6. Tolosa I,De Mora S,Sheikholeslami M R,et al. Aliphatic and aromatic hydrocarbons in coastal Caspian Sea sediments[J]. Marine Pollution Bulletin,2004,48(1/2):44-60. Simoneit B R T,Mazurek M A. Organic matter of the troposphere-Ⅱ. natural background of biogenic lipid matter in aerosols over the rural western United States[J]. Atmospheric Environment (1967),1982,16(9):2139-2159. 刘刚,孙丽娜,李久海,等. 秸秆燃烧排放的正构烷烃及其碳同位素组成特征[J]. 中国环境科学,2012,32(12):2184-2191. Liu Gang,Sun Li'na,Li Jiuhai,et al. Chemical and stable carbon isotopic composition of n-alkanes in maize straw and its smoke[J]. China Environmental Science,2012,32(12):2184-2191. 刘刚,李久海,徐慧,等. 麦草及其烟尘中正构烷烃的组成[J]. 环境科学,2013,34(11):4171-4177. Liu Gang,Li Jiuhai,Xu Hui,et al. Chemical composition of n-alkanes in wheat straw and smoke[J]. Environmental Science,2013,34(11):4171-4177. 张枝焕,陶澍,吴水平,等. 天津地区河流沉积物中中等分子量正构烷烃的分布特征[J]. 沉积学报,2007,25(4):632-639. Zhang Zhihuan,Tao Shu,Wu Shuiping,et al. Composition and distribution of middle-molecular weight normal alkane compounds in sediments from some rivers in Tianjin,Northern China[J]. Acta Sedimentologica Sinica,2007,25(4):632-639. Oren A,Aizenshtat Z,Chefetz B. Persistent organic pollutants and sedimentary organic matter properties:a case study in the Kishon River,Israel[J]. Environmental Pollution,2006,141(2):265-274. Mackie P R,Platt H M,Hardy R. Hydrocarbons in the marine environment:Ⅱ. Distribution of n-alkanes in the fauna and environment of the sub-antarctic island of South Georgia[J]. Estuarine and Coastal Marine Science,1978,6(3):301-313. Rowland S J,Volkman J K. Biogenic and pollutant aliphatic hydrocarbons in Mytilus edulis from the North Sea[J]. Marine Environmental Research,1982,7(2):117-130. Farrington J W,Quinn J G. Biogeochemistry of fatty acids in Recent sediments from Narragansett Bay,Rhode Island[J]. Geochimica et Cosmochimica Acta,1973,37(2):259-268. Colombo J C,Pelletier E,Brochu C,et al. Determination of hydrocarbon sources using n-alkane and polyaromatic hydrocarbon distribution indexes. Case study:Rio de la Plata Estuary,Argentina[J]. Environmental Science and Technology,1989,23(7):888-894. Volkman J K,Holdsworth D G,Neill G P,et al. Identification of natural,anthropogenic,and petroleum hydrocarbons in aquatic sediments[J]. Science of the Total Environment,1992,112(2/3):203-219. Yunker M B,Macdonald R W,Vingarzan R,et al. PAHs in the Fraser River basin:a critical appraisal of PAH ratios as indicators of PAH source and composition[J]. Organic Geochemistry,2002,33(4):489-515. 于国光,王铁冠,吴大鹏. 薪柴燃烧源和燃煤源中多环芳烃的成分谱研究[J]. 生态环境,2007,16(2):285-289. Yu Guoguang,Wang Tieguan,Wu Dapeng. Study on fingerprints of PAHs from the combustion of bavin and coal[J]. Ecology and Environment,2007,16(2):285-289. 胡冬梅,彭林,白慧玲,等. 高等植物、燃煤和机动车排放正构烷烃特征分析[J]. 环境化学,2014,33(5):716-723. Hu Dongmei,Peng Lin,Bai Huiling,et al. Characteristics of n-alkanes emissions from higher plants,coal ashes and vehicles[J]. Environmental Chemistry,2014,33(5):716-723. Blumer M,Guillard R R L,Chase T. Hydrocarbons of marine phytoplankton[J]. Marine Biology,1971,8(3):183-189. Johnson R W,Calder J A. Early diagenesis of fatty acids and hydrocarbons in a salt marsh environment[J]. Geochimica et Cosmochimica Acta,1973,37(8):1943-1955. 潘月云,李楠,郑君瑜,等. 广东省人为源大气污染物排放清单及特征研究[J]. 环境科学学报,2015,35(9):2655-2669. Pan Yueyun,Li Nan,Zheng Junyu,et al. Emission inventory and characteristics of anthropogenic air pollutant sources in Guangdong Province[J]. Acta Scientiae Circumstantiae,2015,35(9):2655-2669.
点击查看大图
计量
- 文章访问数: 901
- HTML全文浏览量: 10
- PDF下载量: 635
- 被引次数: 0