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污灌土壤中多环芳烃(pahs)的积累与动态变化研究  [PDF]
宋玉芳,常士俊,李利,马学军,孙铁珩
应用生态学报 , 1997,
Abstract: 对污灌土壤中14种多环芳烃的分析表明,各灌区土壤中pahs的积累一般以渠首最高,渠中次之,渠尾含量与对照相当.但在沈抚石油灌区上、中和下游土壤中均有pahs的积累.此外,水稻生长期污灌可明显增加土壤中pahs的总量,各单一污染物的增、减趋势有所不同.
北京东南郊污灌区PAHs垂向分布规律  [PDF]
何江涛,金爱芳,陈素暖,魏永霞
环境科学 , 2009,
Abstract: 采用Eijkelkamp土壤采样器对北京东南郊污灌区进行了3个钻孔剖面采样,分析了土壤样品的理化参数,并且采用气相色谱-质谱联用仪对土壤样品的多环芳烃(PAHs)进行了定量分析,研究了土壤理化参数和16种PAHs从表层到5.5m深的范围内垂向变化规律.结果表明,污灌区表层土壤中有14种PAHs检出,检出浓度在4~428μg/kg之间,表层以下PAHs的检出种类显著减少,主要以2环和3环的萘、菲、芴、苊烯、二氢苊、荧蒽6种为主.粘粒含量、粘土矿物总量、阳离子交换容量以及总有机碳4个理化参数相互之间在垂向变化上具有一致性,均在0.05水平上显著相关.表层以下粘粒含量与低环PAHs在垂向含量变化也有较好的一致性,粘粒含量高的层位,PAHs含量也较高.从剖面PAHs含量变化可以判断,低环PAHs较易迁移,它们的迁移性强弱顺序为:二氢苊>芴>萘>菲>苊烯>荧蒽,其它高环PAHs难以迁移,仅在表层土壤中检出,说明在长期污灌条件下,迁移性较好的低环PAHs能够迁移到较深的土层中,有可能导致浅层地下水的污染.
无芒雀麦-污泥系统中泥/土不同比例对PAHs修复效果的影响  [PDF]
王伟, 冯圣东, 杨志新, 常瑞雪, 李玉灵, 王小敏
草业学报 , 2015, DOI: 10.11686/cyxb20150217
Abstract: 城市污水处理厂污泥中含有较高浓度的有毒有害物质多环芳烃(PAHs),且污泥产量大,如果不经过处理直接农业利用或堆放会导致土壤和作物的污染。本研究利用污泥和土壤不同配比组合(W0%,泥土比0∶1;W25%,泥土比1∶3;W50%,泥土比1∶1;W75%,泥土比3∶1;W100%,泥土比1∶0)的盆栽试验,探讨无芒雀麦-污泥系统对污泥多环芳烃的修复效果。研究结果表明,随污泥含量增加对无芒雀麦株高的影响差异不明显,而生物量却呈现出明显的上升趋势。无芒雀麦对污泥的耐受性表现良好;无芒雀麦对泥/土组合14种PAHs的吸收总量以W100%处理最高,且对3环、4环多环芳烃的吸收量比其他环数优势明显;在不同泥/土组合处理下,无芒雀麦-污泥系统对泥/土14种PAHs总量的去除率在W50%、W75%、W100%处理间没有明显差异,以W75%组合去除率为最高,达85.4%。且含有污泥的所有组合对高环芳烃Pyr、Chry、BaA、BbF、BkF、BaP、InP单体的去除优势表现非常突出,均达到80%或90%以上。综合考虑无芒雀麦的生长状况、吸收量及去除率认为,将耐抗性和去除率高的无芒雀麦作为优选植物资源直接用于城市污泥PAHs的修复是可行的,且以泥土比3∶1为最佳修复组合。
Distribution of Polycyclic Aromatic Hydrocarbons in Soil Profiles in Southeast Suburb of Beijing Wastewater Irrigation Area
北京东南郊污灌区PAHs垂向分布规律

HE Jiang-tao,JIN Ai-fang,CHEN Su-nuan,WEI Yong-xia,
何江涛
,金爱芳,陈素暖,魏永霞

环境科学 , 2009,
Abstract: 3 borehole profiles samples were collected using Eijkelkamp soil sampler from the wastewater irrigation area of Beijing Southeast suburb.The soil samples were collected from surface to 5.5 m underground every 0.5 m.Physical-chemical properties of the samples such as clay content,total amount of clay minerals,cation exchange capacity(CEC),total organic compounds(TOC),etc.were analyzed.16 polycyclic aromatic hydrocarbons(PAHs) defined by the U.S.EPA were also analyzed with gas chromatography-mass spectrometry...
桂中坳陷西北部下石炭统岩关组泥页岩储层特征研究:以环页1井为例  [PDF]
,毛佩筱,王星星,吴凯凯,李梦瑶,朱振宏,金爱民,楼章华
- , 2018,
Abstract: 桂中坳陷西北部地区下石炭统岩关组泥页岩沉积厚度大,生烃条件好,是页岩气勘探重要的目 标 层 之 一。以 环 页1井为例,通过镜下观察、有机地球化学分析、矿物含量分析、物性分析和等温吸附实验,分析了岩关组泥页岩的有机地球化学特征、岩石矿物学特征、储集特征和含气性特征。结果表明,岩关组泥页岩有机质类型属于Ⅰ~Ⅱ1 型,总有机碳质量分数平均为1.34%,热演化程度(Ro)较高,平均达3.03%。矿物成分以石英、方解石和黏土矿物为主,具有高石英、低黏土矿物、低碳酸盐矿物的组成特征,脆性矿物含量高,黏土矿物以伊利石为主,已进入中成岩 B期。泥页岩主要发育黏土矿物层间孔、有机质孔及微裂缝,具 有良好的储、渗条件。泥页岩具有低孔低渗的特征,w(TOC)、石英含量和孔隙度三者之间存在着良好的正相关性,碳酸盐矿物成分的增多导致孔隙度降低,增多的伊利石和高岭石对孔隙度有贡献作用。甲烷吸附气含量平均为1.16m3/t,泥页岩甲烷吸附量 随着孔隙度的增加而增加,w(TOC)和Ro 共同影响着泥页岩的吸附能力,过高的成熟度降低了泥页岩的吸附能力。
污灌区土壤中多环芳烃的垂直分布及可能来源  [PDF]
姚林林,张彩香,李佳乐,廖小平,王焰新
环境科学 , 2013,
Abstract: 用气相色谱-质谱联用(GC/MS)的方法分析太原市小店污灌区9个土壤剖面中16种多环芳烃(PAHs)含量及垂直分布特征.结果表明,小店污灌区表层土(0~10cm)中PAHs平均含量变化趋势为背景区<沼泽区<清灌区<污灌区;大部分剖面土中PAHs含量随土层深度增加呈减少趋势,PAHs含量变化幅度较大的位置集中在地表以下0~40cm范围内;高环(4~6环)PAHs大量富集在距地表0~50cm土壤内,清灌区土壤对4~6环PAHs的富集能力强于污灌区;不同环数PAHs与TOC和砂粒呈正相关关系(rmax=0.791,P=0;rmax=0.882,P=0),与pH呈负相关关系(rmin=-0.1,P=0.702);距地表0~40cm范围内的土壤中PAHs的主要污染来源为小店区煤的燃烧;燃烧产生PAHs的污染途径一是直接沉降至土壤中,二是沉降至水体中,吸附在固体颗粒表面,随着灌溉污水流动而在土壤中大量富集.
Observational Study of Spectral Distribution of Polycyclic Aromatic Hydrocarbons(PAHs) and PM_(10) in Waliguan and Xining
瓦里关及西宁PM10和多环芳烃谱分布的观测研究

TANG Li-li-,NIU Sheng-jie,FAN Shu-xian,NIE Hong,GAO Run-xiang,JIN Sai-hua,YANG Guan-ying,
汤莉莉
,牛生杰,樊曙先,乜虹,高润祥,金赛花,杨关盈

高原气象 , 2010,
Abstract: In an attempt to explore the polluting properties and sources of polycyclic aromatic hydrocarbons (PAHs) contained in PM10 at Waliguan and Xining stations of Qinghai Province,7-group aerosol samples were gleaned at the Waliguan Atmospheric Background Observatory and Qinghai Station of Meteorology from May 24 to June 1,2007. The mass concentration of PM10,size distribution and spectral distribution characteristics of polycyclic aromatic hydrocarbons were analyzed. The results show that the daily mean concent...
Vertical Distribution and Possible Sources of Polycyclic Aromatic Hydrocarbon in Sewage Area Soil
污灌区土壤中多环芳烃的垂直分布及可能来源

YAO Lin-lin,ZHANG Cai-xiang,LI Jia-le,LIAO Xiao-ping,WANG Yan-xin,
姚林林
,张彩香,李佳乐,廖小平,王焰新

环境科学 , 2013,
Abstract: 用气相色谱-质谱联用(GC/MS)的方法分析太原市小店污灌区9个土壤剖面中16种多环芳烃(PAHs)含量及垂直分布特征. 结果表明,小店污灌区表层土(0~10 cm)中PAHs平均含量变化趋势为背景区<沼泽区<清灌区<污灌区; 大部分剖面土中PAHs含量随土层深度增加呈减少趋势,PAHs含量变化幅度较大的位置集中在地表以下0~40 cm范围内; 高环(4~6环)PAHs大量富集在距地表0~50 cm土壤内,清灌区土壤对4~6环PAHs的富集能力强于污灌区; 不同环数PAHs与TOC和砂粒呈正相关关系(rmax=0.791, P=0; rmax=0.882, P=0),与pH呈负相关关系(rmin=-0.1, P=0.702); 距地表0~40 cm范围内的土壤中PAHs的主要污染来源为小店区煤的燃烧; 燃烧产生PAHs的污染途径一是直接沉降至土壤中,二是沉降至水体中,吸附在固体颗粒表面,随着灌溉污水流动而在土壤中大量富集.
北京东南郊再生水灌区土壤PAHs污染特征  [PDF]
农业环境科学学报 , 2010,
Abstract: 采用Eijkelkamp土壤采样器对北京东南郊再生水灌区进行了3个钻孔剖面采样,同时采集了灌溉用水及地下水样品,并采用气相色谱-质谱联用仪对16种多环芳烃(PAHs)进行定量分析。结果表明,表层土壤中有14种PAHs检出,浓度在0.4~53.1μg·kg-1之间,∑PAHs平均含量为206.7μg·kg-1,达到了土壤污染临界值;表层以下PAHs的检出种类和含量显著减少,以中、低环的萘、菲、芴、荧蒽、芘为主,∑PAHs仅占表层的3.8%~12.0%,从剖面PAHs含量变化可以判断,低环PAHs较易迁移,迁移性强弱顺序为萘、芴>菲>芘、荧蒽;污灌区表土中PAHs组成与大气降尘接近,但与再生灌区有明显差异,这种差异主要由于灌溉用水不同所造成;再生水灌区表土以下土壤剖面检出的PAHs与再生水中的PAHs一致,说明再生水灌溉是导致土壤剖面PAHs污染的主要原因,同时地下水中检出的PAHs种类也与土壤剖面基本一致,但含量较高,可能是早期污水灌溉所造成。
Rotational spectroscopy of interstellar PAHs  [PDF]
Yacine Ali-Ha?moud
Physics , 2013, DOI: 10.1093/mnras/stt2083
Abstract: Polycyclic aromatic hydrocarbons (PAHs) are believed to be ubiquitous in the interstellar medium. Yet, to date no specific PAH molecule has been identified. In this paper, a new observational avenue is suggested to detect individual PAHs, using their rotational line emission at radio frequencies. Previous PAH searches based on rotational spectroscopy have only targeted the bowl-shaped corannulene molecule, with the underlying assumption that other polar PAHs are triaxial and have a complex and diluted spectrum unusable for identification purposes. In this paper the rotational spectrum of quasi-symmetric PAHs is computed analytically. It is shown that the asymmetry of planar, nitrogen-substituted symmetric PAHs is small enough that their rotational spectrum, when observed with a resolution of about a MHz, has the appearance of a "comb" of evenly spaced stacks of lines. The simple pattern of these "comb" spectra allows for the use of matched-filtering techniques, which can result in a significantly enhanced signal-to-noise ratio. Detection forecasts are discussed for regions harbouring "anomalous microwave emission", believed to originate from the collective PAH rotational emission. A systematic search for PAH lines in various environments is advocated. If detected, PAH "combs" would allow to the conclusive and unambiguous identification of specific, free-floating interstellar PAHs.
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