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PAHs

PAHs的相关文献在1990年到2022年内共计528篇,主要集中在环境污染及其防治、环境科学基础理论、环境质量评价与环境监测 等领域,其中期刊论文355篇、会议论文9篇、专利文献164篇;相关期刊186种,包括农业环境科学学报、生态毒理学报、环境科学研究等; 相关会议9种,包括持久性有机污染物论坛2011暨第六届持久性有机污染物全国学术研讨会、第一届持久性有机污染物全国学术研讨会暨2006持久性有机污染物论坛、第八次全国劳动卫生与职业病学术会议等;PAHs的相关文献由1646位作者贡献,包括孙丽娜、高彦征、李培军等。

PAHs—发文量

期刊论文>

论文:355 占比:67.23%

会议论文>

论文:9 占比:1.70%

专利文献>

论文:164 占比:31.06%

总计:528篇

PAHs—发文趋势图

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    • 严志楼; 王昶童; 张施阳
    • 摘要: 该研究以上海市某地块石油烃(TPH)和多环芳烃(PAHs)有机污染土壤为例,采用目前修复工程中常用的碱活化过硫酸钠和热脱附技术,分别对TPH和PAHs污染土壤开展修复模拟试验,根据污染去除效果确定了该氧化剂对不同浓度污染土壤的投加量和热脱附温度。在碱活化过硫酸钠体系中,针对低浓度的TPH和PAHs有机污染土壤修复时,投加1.0%的氧化药剂即可达到修复目标;对于高浓度的TPH和PAHs有机污染土壤修复时,投加3.0%的氧化药剂无法达到修复目标。随着药剂投加量的增加,目标污染物的去除率增幅减弱,大量地使用化学药剂修复经济性差且效果有限。采用热脱附技术,在脱附温度为300°C且持续加热1 h的条件下,即可将低浓度TPH和PAHs修复至达到目标值;而对于高浓度污染土,需将温度提升至500°C才可达到修复目标。脱附温度越高,目标污染物的去除效果越好,且其去除效果不受污染物浓度高低的限制。对于受污染土壤的治理应综合考虑经济、时间以及二次污染等因素来确定其适用的修复技术。
    • Miebaka Oriasi; Eteh Desmond Rowland; Ayowei Alvin Harry
    • 摘要: This research presents a novel approach to assessing the health implications of black soot using a MiniVol air sampler.The MiniVol air sampler was used to collect PM from the ambient air at six monitoring sites in Port Harcourt,Nigeria.Sampling was conducted every day for seven days,for a period of 24 hours.PM_(2.5) concentrations at Uniport Junction,GRA Junction,Slaughter Roundabout,Abuloma Jetty,Rumuomasi Roundabout,and New Road Borokiri were 38.6 g/m^(3),28.3 g/m^(3),93.7 g/m^(3),72.9 g/m^(3),30.6 g/m^(3),and 31.3 g/m^(3),respectively.PM_(10) concentrations ranged from 71.2 g/m^(3) to 60.6 g/m^(3),with 103.3 g/m^(3),85.5 g/m^(3),40.1 g/m^(3),and 35.2 g/m^(3) being the highest.The level of PM_(2.5) and PM_(10) pollution in the ambient air was high across the six sampling sites,with mean PM_(2.5) and PM_(10) concentrations exceeding the WHO(2011)guideline.The flame atomic absorption spectrometry(FAAS)technique was used.The presence of heavy metals,such as mean metal concentrations of lead,cadmium,chromium,mercury,and nickel,ranged from 0.009 g/m^(3)-0.532 g/m^(3),0.002 g/m^(3)-0.544 g/m^(3),0.002 g/m^(3)-0.338 g/m^(3),0.001 g/m^(3),and 0.001 g/m^(3)-0.432 g/m^(3),across the six sampling sites.The GC-MS was used to determine the presence of PAHs in particulate matter.Correlation results revealed a strong positive correlation between PM_(2.5) and PM_(10).The findings also revealed a positive relationship between the metals as well as between the metals and PAHs,resulting in asthma,lung cancer,breathing difficulties,and miscarriages among pregnant women,which have affected the health implications of the people living in the environment.
    • 程全国; 王浩东; 李晔; 高悦
    • 摘要: 基于US.EPA的环境风险评价体系,引入蒙特卡罗模拟降低风险评价结果的不确定性,定量评估了辽宁省某化工园区及周边地下水中9种PAHs对人体的健康风险水平,并对各参数进行了敏感性分析。健康风险结果表明:辽宁省某化工园区及周边地下水中PAHs在饮水摄入和皮肤接触途径下对儿童和成人造成的致癌风险大于10^(-6),分别处于Ⅰ级和Ⅱ级风险评价标准区间,非致癌风险小于1,可忽略;苯并(a)蒽(BaA)是造成人体致癌风险的主要物质,萘(Nap)是造成人体非致癌风险主要物质;饮水摄入是最主要的暴露途径。敏感性分析结果表明,暴露期限是健康风险评价最主要的影响因素,体重具有负敏感性。
    • 刘小冬; 赵云霞; 许天楚
    • 摘要: 随着汽车产业的不断快速发展,人类健康和环境安全越来越受到重视。多环芳烃是一类致癌物质,部分发达国家和地区早就对汽车材料中的多环芳烃进行管控。作为我国汽车行业禁用物质管控标准,GB 30512《道路车辆禁用物质要求》将多环芳烃纳入管控范围。文章系统地梳理了国内外汽车材料多环芳烃的检测与管控要求,从前处理提取、净化方式和检测设备进行检测方法的对比分析,以及对国内外标准关于PAHs管控物质种类与限值要求进行了对比。国内外汽车材料PAHs管控现状的整体汇总对GB 30512标准修订中PAHs的管控要求提供了参考。
    • 班艺宁; 王重阳
    • 摘要: PAHs是环境中危害性较强的一类污染物,容易在土壤中发生累积。随着我国城市化水平的不断提高,工业化的高速发展,城市土壤中PAHs污染问题也越来越受到关注。在空间分布上,本文查找文献收集了采样时间为2007—2020年时段内的调查数据,分析了我国城市土壤中PAHs含量的变化特征及分布情况。结果表明,我国城市土壤中PAHs含量范围为32.24~17 200 ng/g,平均值为1 240.92 ng/g,中位值为577.51 ng/g,以中位值代表污染平均水平,发现我国城市土壤整体上接近于中度污染,但存在高污染点位与高污染城市,长春、乌鲁木齐、沈阳等工业城市土壤中PAHs含量过高。其地区分布特点为东北>华北>华东>中南>西北>西南,西南地区PAHs含量明显低于前人调查得到的情况。在时间尺度上,本文调查了三个城市和一个农村从2000年至今的相关文献数据,发现城市土壤PAHs远高于农村,PAHs含量随时间变化有先增高后降低的趋势,整体上明显下降,这表明我国环境治理工作取得了一定的成果。
    • Shweta Srivastava
    • 摘要: Polycyclic aromatic hydrocarbons (PAHs) are formed due to natural and anthropogenic activities and known for their potential impact and persistence in the environment. PAHs exposure has been linked to cause adverse health effect including lung cancer, heart conditions and genetic mutations. The understanding of metabolic effects of PAHs exposure is less clear especially in the presence of pro-inflammatory stress like alcoholism or diabetes. The aim of this article is to understand the metabolic effects of PAHs exposure on Type 2 Diabetes Mellitus (T2DM) by analyzing the clinical biomarkers data retrieved from the National Health and Nutrition Examination Survey, Center for Disease Control (CDC NHANES) (2015-16). This study has also accessed the interactive impact of PAHs and other proinflammatory factors, like alcohol intake on the metabolic syndrome on T2DM. We investigated urinary levels of hydroxylated PAHs metabolites (OH-PAHs) along with demographic, clinical and laboratory data. Generalize linear model Univariate factorial ANOVA was used to evaluate the group differences in the demographics, PAH exposure, drinking patterns, clinical data, and biomarker levels. Linear regression model was used to analyze the association of biomarkers, PAH exposure and drinking data. Multivariable regression model was used for multi-independent model to assess comorbidity association and their effect sizes on the clinical outcomes. The results indicated that BMI (p = 0.002), and age (≤0.001) are independent demographic risk factors for T2DM in high PAHs exposure. Acute proinflammatory activity characterized by CRP, is augmented by elevated monocyte levels (p ≤ 0.001) and stepwise addition of 1-Hydroxynapthelene (p = 0.005), and 2-Hydroxynapthelene (p = 0.001) independently. Prevalence of highest average drinks over time is observed in the high PAHs exposure;with males drinking almost twice compared to females in highly exposed population. Pathway response of T2DM shows sexual dimorphism;with males showing association with triglycerides (p ≤ 0.001), and females with CRP (p = 0.015) independently with HbA1C. The arrangement of CRP, absolute monocyte levels, serum triglycerides and average drinks over time predict the HbA1C levels (adjusted R2 = 0.226, p ≤ 0.001) in individuals with high PAHs exposure. Findings from this investigation support the pathological role of high exposure of PAHs in the exacerbation of metabolic disorder syndrome involving T2DM. Sexual dimorphism is reflected in alcohol drinking, with males drinking more in the high PAHs exposure group. Alcohol drinking as an independent factor was associated with the T2DM indicator, HbA1C in individuals with high PAHs exposure.
    • 赵鹏程; 李昂; 李新令; 李铁; 周校平; 黄震
    • 摘要: 基于流动反应器,开展了甲苯裂解过程碳烟颗粒及其前驱物多环芳烃(PAHs)的形成规律的试验研究.选取了在950~1450°C温度范围内3个不同停留时间(0.2s、0.5s、0.8s)下,甲苯裂解反应形成碳烟颗粒粒径分布特性,以及2~7环19种颗粒态PAHs的成分谱特征,进一步分析了不同裂解条件下颗粒物的当量毒性.发现甲苯裂解颗粒的生成过程伴随着凝结、凝并和团聚等气溶胶动力学变化,裂解温度越高碳烟颗粒的几何平均粒径越大、颗粒质量越高,颗粒粒径随停留时间增加向大粒子方向偏移;PAHs的浓度随温度的变化多数呈单峰分布,部分呈双峰分布,这与构成分子中的芳香环数和停留时间相关;0.5s颗粒中PAHs当量毒性高于0.8 s和0.2 s时,且峰值位于1050°C左右.
    • 路照; 李清光
    • 摘要: 为了揭示淮北煤田煤系有机质中多环芳烃(PAHs)的来源及组成特征,本文采用色谱质谱(GC-MS)等仪器对其煤及泥岩样品中的PAHs进行了定性或定量分析。结果表明,PAHs的占比为10.05%~57.81%(煤)及20.69%~66.60%(泥岩)。芳烃组分中,菲的占比是最高的(煤:32.3%~54.5%;泥岩:38.9%~55.0%);次之(煤:8.4%~22.6%;泥岩:10.3%~18.8%)。萘、菲、联苯及三芴系列化合物中,各类烷基物的平均含量均远超过了其母体芳香物。MP/P、Fla/(Fla+Py)、BaA/(BaA+Chy)值表征了PAHs为成岩及燃烧作用的混合来源,主要来源于前者。萘、菲、三芴等系列芳香物及烷基芳香物的检出,揭示了毒性PAHs对研究区生态环境及人体健康造成了潜在威胁性。
    • Ju Xueyan; Zhang Kui; Xi Yuanbing; Wang Zhe; Nie Hong
    • 摘要: In order to investigate the hydrofining process of LCO for producing aromatics and gasoline,the selective hydrogenation of polycyclic aromatic hydrocarbons(PAHs),a major component of light cycle oil(LCO),was studied using a NiMoW/Al_(2)O_(3)catalyst.Based on the study of the reversible hydrogenation reaction,PAHs in the selective hydrogenation process could be effectively simulated by the modeled CH and CH2 groups,and the hydrodesulfurization and hydrodenitrogenation kinetic models could be further established in this process.The results showed that the kinetic models developed could fit the experimental data effectively and predict the content of S,N,and aromatics in the selective hydrogenation products of LCO.
    • 吴萌; 段永红; 何佳璘; 张国胜
    • 摘要: 试验收集整理了2001—2018年发表的102篇关于我国北方地区表层土壤(0~30 cm)中PAHs(多环芳烃)含量数据的文献,共计14个省市区,5800多份土壤样品,较系统地分析其表层土壤中PAHs的含量、组成结构和主要来源,以期为我国土壤环境的污染防控提供科学依据.结果表明,我国北方地区表层土壤∑16 PAHs含量的中位值为922.55 ng/g,与美国、英国、意大利、葡萄牙等国家的土壤PAHs含量相比处于中等水平.16种PAHs单体含量以Nap(萘)、BaP(苯并[a]芘)、Chr(?)和BbF(苯并[b]荧蒽)含量(中位值)最高,Flu(芴)、DahA(二苯并[a,h]蒽)、Ace(苊)和Acy(苊烯)的含量(中位值)最少.表土组成以高中低环PAHs百分含量各占1/3左右.北方不同地区表层土壤中∑PAHs含量以西北地区最高,是华中地区(最低值)的5.5倍,具体分布特征为西北地区>华北地区>东北地区>华东地区>华中地区.不同的污染源对土壤PAHs的含量影响不同,点源污染土壤中PAHs含量(1696 ng/g)要显著高于面源污染土壤PAHs含量(638 ng/g).对16种PAHs采用3种方法进行源解析,环数相对丰度法表明,PAHs主要来源于燃烧源,但燃油源也不可忽略;同分异构体比值法表明,PAHs主要来源于煤和生物质的高温燃烧;主成分分析法表明,PAHs主要来源于燃煤和交通的混合源.综上,北方地区表层土壤中PAHs主要来源于燃烧源和交通排放源.
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