Occurrence of priority pollutants in WWTP effluents and Mediterranean coastal waters of Spain   总被引：1，自引：0，他引：1  

Martí N  Aguado D  Segovia-Martínez L  Bouzas A  Seco A 《Marine pollution bulletin》2011,62(3):615-625

A comprehensive study aimed at evaluating the occurrence, significance of concentrations and spatial distribution of priority pollutants (PPs) along the Comunidad Valenciana coastal waters (Spain) was carried out in order to fulfil the European Water Framework Directive (WFD). Additionally, PP concentrations were also analysed in the effluent of 28 WWTPs distributed along the studied area. In coastal waters 36 organic pollutants of the 71 analysed, including 26 PPs were detected although many of them with low frequency of occurrence. Only 13 compounds, which belong to four different classes (VOCs, organochlorinated pesticides, phthalates and tributyltin compounds (TBT)) showed a frequency of occurrence above 20% in coastal waters. In the results obtained until now, octylphenol, pentachlorobenzene, DEHP and TBT exceeded the annual average concentration (EQS-AAC), and only TBT surpassed the maximum allowable concentration (EQS-MAC). The most frequent contaminants determined in coastal waters were also present in WWTP effluents.  相似文献   

广州不同季风期近地面大气气溶胶中7Be与持久性有机污染物的同步观测   总被引：1，自引：0，他引：1  

杨永亮  史敬磊  张干  朱晓华  李勇  于寒青 《地球化学》2011,40(1):72-82

2006年8月-2007年7月,在广州市天河区以每周采集2～3天的采样频率连续12个月采集近地面大气气溶胶样品,同步测定近地面气溶胶中7Be和有机氯农药(OCPs)、多氯联苯(PCBs)、多溴联苯醚(PBDEs)等持久性有机污染物的浓度值.7Be浓度全年平均值为2.59 mBq/m3,最高值出现在5月(8.5 mBq/...  相似文献   

滨海工业入海排污口选址研究——以湛江钢铁项目为例     

石萍  彭昆仑  谢健  何桂芳 《海洋湖沼通报》2011,(2):159-166

滨海工业入海排污口位置的合理选择对于减轻陆源排污对海洋环境污染有很重要的作用.本文以湛江钢铁项目为例,从海洋功能区要求、海洋环境容量、环境保护目标和扩散条件等因素考虑,对滨海工业入海排污口的选址进行了多方案的比选研究.通过比选研究结果,推荐符合当地海洋功能区划、远离主要环境保护目标、离岸深海排放(10m)、环境容量较大...  相似文献   

The　Vertical　Transport　of　Air　Pollutants　by　Convective　Clouds．Part　Ⅲ：Transport　Features　of　Different　Cloud　Systems     

孔凡铀  秦瑜 《大气科学进展》1994,(1)

ＴｈｅＶｅｒｔｉｃａｌＴｒａｎｓｐｏｒｔｏｆＡｉｒＰｏｌｌｕｔａｎｔｓｂｙＣｏｎｖｅｃｔｉｖｅＣｌｏｕｄｓ．ＰａｒｔⅢ：ＴｒａｎｓｐｏｒｔＦｅａｔｕｒｅｓｏｆＤｉｆｆｅｒｅｎｔＣｌｏｕｄＳｙｓｔｅｍｓＫｏｎｇＦａｎｙｏｕ（孔凡铀）ａｎｄＱｉｎＹｕ（秦...  相似文献   

Influence of transboundary air pollution on air quality in southwestern China     

Xiufeng Yin  Shichang Kang  Maheswar Rupakheti  Benjamin de Foy  Ping Li  Junhua Yang  Kunpeng Wu  Qianggong Zhang  Dipesh Rupakheti 《地学前缘(英文版)》2021,12(6):114-128

Air pollution is a grand challenge of our time due to its multitude of adverse impacts on environment and society,with the scale of impacts more severe in developing countries,including China.Thus,China has initiated and implemented strict air pollution control measures over last several years to reduce impacts of air pollution.Monitoring data from Jan 2015 to Dec 2019 on six criteria air pollutants(SO2,NO2,CO,O3,PM2.5,and PM1o)at eight sites in southwestern China were investigated to understand the situation and analyze the impacts of transboundary air pollutants in this region.In terms of seasonal variation,the maximum concentrations of air pollutants at these sites were observed in winter or spring season depending on individual site.For diurnal variation,surface ozone peaked in the afternoon while the other pollutants had a bimodal pattern with peaks in the morning and late afternoon.There was limited trans-port of domestic emissions of air pollutants in China to these sites.Local emissions enhanced the concen-trations of air pollutants during some pollution events.Mostly,the transboundary transport of air pollution from South Asia and Southeast Asia was associated with high concentrations of most air pollu-tants observed in southwestern China.Since air pollutants can be transported to southwestern China over long distances from the source regions,it is necessary to conduct more research to properly attribute and quantify transboundary transport of air pollutants,which will provide more solid scientific guidance for air pollution management in southwestern China.  相似文献   

不同季风时节北京近地面大气颗粒物中7Be和POPs的变化   总被引：1，自引：0，他引：1  

朱晓华  杨永亮  盖楠  陈舒  李勇  焦杏春  史双昕  于寒青  谭科艳  潘静 《地球化学》2014,(2):101-113

2009年8月至2010年7月在东亚季风区中纬度城市北京连续一年以每周3天的时间尺度同步采集近地面大气中气溶胶样品并测定了宇宙射线成因核素7Be 和8种有机氯农药（OCPs）、7种多氯联苯（PCBs）的浓度。7Be浓度全年平均值为（8.39±0.49） mBq/m^3,显著高于欧洲地区具有相同纬度的城市。最高值出现在9月（15.64 mBq/m^3）,最低值出现在5月（1.35 mBq/m^3）。夏季7Be浓度值较低,春、秋季浓度值较高。对大气气溶胶中7Be进行不同季风时节的比较要比季节性的比较可更好地揭示7Be的变化规律及其来源。夏季的低值与东南季风导致的多降雨气象条件有关。秋季的高值为大气环流异常所致。OCPs和PCBs总浓度（∑OCPs和∑PCBs）呈现夏季低,秋、冬季高的现象。西风和西北风为北京市大气气溶胶中POPs浓度最高的季风时节。较高氯代PCBs （PCB153和PCB180）在冬季占主导优势。较高的PCB101和PCB118可能来自北京周边的污染源。在部分时期7Be与DDTs和δ-HCH有显著的相关性,而在春季和夏季PCB-101与7Be有很好的相关性。  相似文献   

Anodic Oxidation as Green Alternative for Removing Diethyl Phthalate from Wastewater Using Pb/PbO2 and Ti/SnO2 Anodes     

Lourdes Vazquez‐Gomez  Achille de Battisti  Sergio Ferro  Monica Cerro  Silvia Reyna  Carlos A. Martínez‐Huitle  Marco A. Quiroz 《洁净——土壤、空气、水》2012,40(4):408-415

The electrochemical oxidation (EO) of diethyl phthalate (DEP) in aqueous solution was studied at Pb/PbO₂ and Ti/SnO₂ anode materials under galvanostatic‐experimental conditions. Results obtained clearly demonstrated that the anode plays a significant role for the optimization of the oxidation process, deciding the mechanisms and by‐products formed. DEP and by‐products of oxidation were also analyzed during various stages of the electrolysis reaction by HPLC and GC/MS techniques. Before the analysis by GC/MS technique, the samples were treated by solid phase microextraction (SPME) in order to concentrate the compounds from the reaction solution and identify all electrolysis intermediates. Current efficiencies (instantaneous current efficiency; ICE and total current efficiency; TCE) achieved during EO experiments were dependent on anode used and current density (20–40 mA cm^?2) at 40°C. The results obtained demonstrated that the environmental electrochemical methods can be a feasible alternative for the wastewater treatment containing hazardous phthalates.  相似文献   

葫芦岛市空气质量分析及其与暴雨的关系     

于亚薇  孟振雄 《成都信息工程学院学报》2012,27(3):314-317

针对暴雨对空气质量的影响的问题,结合葫芦岛市环境监测中心站2010年市区空气质量逐日监测资料与葫芦岛市气象局气象观测资料,采用空气污染指数和空气质量指数法,分析了葫芦岛市空气质量时间分布特征及其与暴雨的关系。结果表明,在影响葫芦岛市空气质量的主要3种污染物——二氧化硫(SO2)、二氧化氮(NO2)和可吸入颗粒物(PM10)中PM10为首要污染物;3种污染物变化趋势基本一致,都是夏季污染最轻,冬季污染最重,春秋两季居中;暴雨与污染物浓度变化有着密切的关系,4次暴雨过程所在日3种污染物浓度都较低,且在强降水过后第一天污染物浓度继续降低。  相似文献   

Removal of Heavy Metals from Landfill Leachate Using Municipal Solid Waste Incineration Fly Ash as Adsorbent          下载免费PDF全文

Qiang Xue  Jiang‐Shan Li  Ping Wang  Lei Liu  Zhen‐Ze Li 《洁净——土壤、空气、水》2014,42(11):1626-1631

  相似文献   

考虑泥沙影响的污染物输运年龄数值模拟          下载免费PDF全文

张琴  杨洁  张晓 《水科学进展》2019,30(3):411-422

自然水体中污染物的迁移、转化规律与经泥沙吸附后的沉降、再悬浮等泥沙过程密切相关,其机制尚不明确。采用污染物输运年龄对泥沙影响进行了量化分析,并应用于南黄海辐射沙脊群西洋海域。基于水体中泥沙-污染物模型,推导了考虑泥沙影响的污染物输运年龄的计算方程,通过数值模拟分析了污染物分配系数KD对污染物输运年龄空间分布的影响。研究成果表明:计入泥沙影响后,污染物浓度显著减小,污染物输运年龄随之增大,表明泥沙对污染物扩散起阻碍作用;污染物分配系数KD表征泥沙吸附能力,污染物输运年龄与其呈一定的正相关性,当该系数达到一定值(KD=10^3L/g)时,泥沙吸附能力趋于饱和,污染物输运年龄不再发生显著改变。  相似文献