污染

These samples were collected along a main street across the urban area and a mountain route from foot to the top. Results demonstrate that the main magnetic minerals in the street dust are magnetite, maghaemite and haematite with some paramagnetic minerals. Plots of Mrs/Ms vs. Bcr/Bc and Xfd % vs. X ARM/SIRM indicate that the main grain size of magnetic minerals in the street dust are pseudo single domain. The results reveal that the Lanzhou city is more polluted in spring than in summer. The main pollution sources are anthropogenic activities （81.9%） and natural dust （18.1%）, especially the former. The spatial distribution of pollution is controlled by the topography and weather conditions.

结果表明，兰州市街道尘埃中磁性矿物含量较高，主要磁性矿物是铁磁矿、磁赤铁矿和赤铁矿，并伴有少量顺磁性矿物；磁性矿物粒度主要是准单畴；市区污染春季较夏季严重，春季高频率的强沙尘暴可能带来了更多的磁性矿物；兰州市污染物的沉积和分布在很大程度上受到气象条件和地形地貌格局的影响，市区每个盆地东端高于其它地区；兰州市污染以人为活动产物为主，人为活动贡献约为81.9％，其中包含交通约22.6％的贡献，自然降尘贡献约为18.1％；特殊的地形和气象条件，使得兰州市区的大气环境容量比平原城市的环境容量小得多，进而导致严重的大气污染。

In this paper the method of distinguishing background content and polluted content for As element of soil based on Hazen probability curve in Tongling diggings were discussed.

区域土壤污染重金属元素背景含量与污染叠加含量的区分，对于准确评价某一具体区域的重金属污染状况具有重要意义，但是目前这仍然是一项难度较大的工作。

In this subject we maked Hypnum hamulosum and Thuidium cymbifolium as objects to monitor the air pollution of heavy metal and SO2 of Nanjing city using moss bags,combined simulated test and monitoring of natural pollution to discuss the mechanism of mosses to be used as monitor of air pollution of heavy metals.

本课题以弯叶灰藓和大羽藓为研究对象，采用苔袋法对南京地区的大气重金属和SO2污染进行了监测，通过室内模拟培养与室外自然污染监测相结合的方法，对树木附生藓类监测大气重金属污染机理作了初步的探讨。

PanYue, head of the Ministry of Environment Protection, revealed the following facts in an interview: one third of China's current soil once suffered from the acid rain; 50% of the water resources in China's seven main rivers is inadaptable; a quarter of the Chinese people are lacking of clean drinking water; one third of the urban population has to inhale the polluted air; less than 20% of the urban rubbish are disposed in environmental-friendly way; five Chinese cities are in the list of ten world's most polluted cities; 70-80% of cancers in Beijing can be attributed to environmental pollution.

国家环保总局副局长潘岳有一次在接受采访时透露：目前中国1/3的国土都遭遇过酸雨的袭击，七大河中一半的水资源是完全没用的，而另有1/4的中国人没有纯净的饮用水，1/3的城市人口不得不呼吸被污染的空气，城市中只有不到20%的垃圾是按照环保的方式处理，世界上10个污染最严重的城市中国占了5个，北京有70%-80%的癌症和环境污染有关。

The revised "Law on Prevention and Control of Solid Waste Pollution" has offered the important basis to work of preventing and controlling solid waste pollution, especially hazardous waste pollution.So it will energetically advance reduction of the solid waste , recycle and innoxious treatment, make solid waste prevention and control of pollution and development of recycling economy combine closely , promote sustainable development of economy and society , realize the win-win of the environment and development ,and be favorable to the setting-up of the harmonious society.

修订的《固体废物污染环境防治法》为固体废物特别是危险废物污染环境防治工作提供了重要依据，将大力推进固体废物的减量化、资源化和无害化，使固体废物污染防治与发展循环经济紧密结合，促进经济社会可持续发展，实现环境与发展的双赢，有利于和谐型社会的建立。

With Yangtze delta tidal flat as an example, through the analysis on the magnetic characteristics of tidal flat sediment and the study on the space distribution of heavy metal elements, this thesis discussed the impact to Shanghai sea bank brought by heavy intensity development, and the interrelation between sediment power effect and heavy metal pollution space distribution. Utilizing the advantage of artificial intelligence neural network, in conjunction with environmental chemical analysis, from the angle of view of sediment magnetic characteristics, it analyzed the connection mechanism between magnetic mines and heavy metal element within tidal sediments, and built a quantitative magnetical diagnosis model, in attempt to calculating the tidal heavy metal pollution status from the magnetic measurement data of sediments and assess it's impact to the environment.

中文题名长江口潮滩重金属污染的磁诊断模型研究副题名外文题名论文作者许羽导师俞立中教授学科专业自然地理学研究领域\研究方向资源与环境信息系统学位级别博士学位授予单位华东师范大学学位授予日期2001 论文页码总数111页关键词长江口潮滩沉积物环境磁学重金属污染馆藏号BSLW /2001 /X145 /11 本文以长江口南岸潮滩为例，通过对潮滩沉积物磁性特征的分析、重金属元素空间分布的研究，探讨了上海滨岸带高强度开发对潮滩环境质量的影响，以及沉积动力作用与重金属污染空间分布格局的联系。

It was shown that the atmosphere was changing from coal-burnt to petrol-burnt and organic pollution was serious in water, especially NH 3-N,BOD 5, Arsenide and Mercuride solid discharge was increasing year by year and the noise environment is getting better.

结果表明，广州市大气环境污染已由煤烟型向石油型转变；水环境中有机污染严重，主要表现为氨氮、BOD5、砷化物和汞化物污染；固体垃圾产出量逐年增加；声环境在逐步好转

WTBX〗Chlamydomonas microsphaera〖WTBZ〗 was dominant species in winter,and the dominance index changed from 7143% to 9628%.

同时，生物学评价显示，蠡湖冬季水质劣于春季，与化学评价结果相一致；但从评定级别看，生物评价认为，2007年冬、春季节蠡湖水质分别处于重污染和中度污染状态，较化学评价的污染程度重，显示出两种方法的差异性。

General analysis indicates that Myriophyllum spicatum L.Panicle shape of the absorption of chromium Cr6 + concentration and treatment exist between the concentration of significant positive correlation with Myriophyllum spicatum L.can pollute the environment in better enrichment of chromium, the background environment The higher concentration levels of heavy metals, plant accumulation of heavy metals in higher concentration levels, the application of plant technology for the repair of heavy metal pollution on the environment to provide a scientific basis on Myriophyllum spicatum L. of heavy metal pollution of wetland restoration has great potential.

综合分析表明，在一定范围内，穗状狐尾藻对铬Cr6+的吸收富集含量随处理浓度升高而增大，说明穗状狐尾藻在污染环境中能较好地富集重金属铬，从而得出在一定范围内，环境背景中重金属含量水平越高植物富集重金属的含量水平也越高的结论，这就为应用植物技术修复重金属对环境造成的污染提供科学依据，而穗状狐尾藻对湿地重金属污染具有较大的修复潜力。

In general, sunflower was suited to phytoremediation of moderately Pb-contaminated soil by phytoextraction.The result mentioned above showed that the main reasons that nutrient and EDTA could impact on phytoremediation efficiency was these as below: firstly, the addition of soil amendments transform soil Pb from nonresidual fractions to residual fraction substantially. Secondly, the grown period of tissues in C4 plants was short, so the replacement of C4 plants with C3 plants may increase times and efficiency of remediation.

根据上述结果，不同营养水平和EDTA对铅污染土壤植物修复的机理及效率可以归纳为：N、P、K的添加能使土壤中的非残留态Pb向残留态转化，因此N、P、K的添加能够增加菠菜和苣荬菜体内的铅积累；与C3型植物菠菜、苣荬菜相比，C4型的植物马齿苋由于构件成熟期短，较为适合作短期内铅污染土壤修复工程；在植物修复过程中，低浓度EDTA的分次添加能够显著提高修复的效率，并且能够减小螯合剂增加产生的二次污染。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了