Inventory of emissions from major air pollutant categories in Turkey

In this study, an inventory of air pollutant emission estimates from major air polluting sources in Turkey for period between 1985 and 2005 with 5-year intervals were estimated. Inventory covers anthropogenic sources of five major air pollutants of particulate matter, sulfur dioxide, carbon monoxide, nitrogen oxides and non-methane volatile organic compounds. Their break-down with respect to main activity sectors were shown and their distribution by the largest industrial source categories were worked out as annual estimates. This inventory and its analysis point to serious environmental implications of air pollutants and a need to develop a policy plan for reducing these emissions.     

含铅,无铅汽油车尾气排出物遗传毒性比较

利用台架试验模拟汽车行驶工况，收集了发动机使用无铅汽油，含铅汽油燃烧后的尾气颗粒物，对其中吸附的有机物进行了提取，并以Ａｍｅｓ试验，中国仓鼠肺细胞体外微核实验等方法，从基因，染色体水平检测了两种颗粒提取的遗传毒性。     

水资源供需矛盾与对策

一、水资源的有限性 根据自然资源的不同特点,人们通常将自然资源划分为三大类,即生物资源(可更新资源)、矿物资源(不可更新资源)和生态资源(恒定资源)。太阳辐射、热量、水分、风能、海潮等属于生态资源,这类资源具有显著的区域性特点,合理开发它们,发挥各地所长,可以永恒使用,即人们常说的是“取之不尽、用之不竭”的资源。 水资源作为恒定资源之一,是由于水资源被开发利用后,并不导致它们在地球上的总储量减少。应该指出,对水资源来说,总储量的不变,只能是从全球的宏观角度出发,这里所说的水资源是广义的概念。广义地来说,海洋、地下水、冰川、湖泊、土壤水、河川径流、沼     

Practical environmental monitoring of major construction projects

Independent teams undertook environmental monitoring of particular concentrations of major construction projects forming part of Hong Kong’s U.S. $20 billion airport infrastructure programme located in dense urban areas. The team combination of environmental specialists with experienced civil engineers enabled pragmatic mitigation measures to be developed and accepted by the construction personnel with the result that potentially significant adverse impacts were averted. The authors discuss the mechanism and success of this innovative approach.     

改性烟气脱硫球形活性炭的研究

以糠醛渣和炭粉的混合物为原料,分别掺入一定比例的CuO V2O5,MnO2,制备具有低温催化活性的炭载脱硫催化剂,并对其脱硫效果、孔径、脱硫反应前后Cu,V,Mn离子的存在形式进行了研究。结果表明,CuO V2O5,MnO2的加入使球形炭的比表面积降低,平均孔径增大,但脱硫效果却进一步提高,说明这两种金属活性组分在脱硫过程中确实起到了催化的作用。     

水产品加工废水生物处理现状与展望

介绍了几种较为典型的水产品加工废水生物处理工艺,以及利用生物处理工艺处理高含盐量废水实验室研究结果;展望了水产品加工废水处理技术的发展前景。     

浅谈清洁生产审核中经济效益的核算方法

根据财务管理学理论，结合清洁生产审核工作实际，分析各地清洁生产审核中的经济效益核算方法的差异，提出简洁实用的核算方法。     

多元回归分析法在突发性事故污染预测中的应用

运用多元回归性，通过预测模型的选择、基础数据系列化、回归模型的建立和回归效果的检验，建立了化学污染危害面积、纵深与诸条件的关系，达到了快速估算的目的，是突出性化学环境污染危害预测的一种方法。     

Hydrogen storage and distribution systems

Hydrogen storage and transportation or distribution is closely linked together. Hydrogen can be distributed continuously in pipelines or batch wise by ships, trucks, railway or airplanes. All batch transportation requires a storage system but also pipelines can be used as pressure storage system. Hydrogen exhibits the highest heating value per weight of all chemical fuels. Furthermore, hydrogen is regenerative and environment friendly. There are two reasons why hydrogen is not the major fuel of toady’s energy consumption: First of all, hydrogen is just an energy carrier. And, although it is the most abundant element in the universe, it has to be produced, since on earth it only occurs in the form of water. This implies that we have to pay for this energy, which results in a difficult economic task, because since the industrialization we are used to consuming energy for free. The second difficulty with hydrogen as an energy carrier is the low critical temperature of 33 K, i.e. hydrogen is a gas at room temperature. For mobile and in many cases also for stationary applications the volumetric and gravimetric density of hydrogen in a storage system is crucial. Hydrogen can be stored by six different methods and phenomena: high pressure gas cylinders (up to 800 bar), liquid hydrogen in cryogenic tanks (at 21 K), adsorbed hydrogen on materials with a large specific surface area (at T < 100 K), absorbed on interstitial sites in a host metal (at ambient pressure and temperature), chemically bond in covalent and ionic compounds (at ambient pressure), oxidation of reactive metals e.g. Li, Na, Mg, Al, Zn with water. These metals easily react with water to the corresponding hydroxide and liberate the hydrogen from the water. Finally, the metal hydroxides can be thermally reduced to the metals in a solar furnace.     

氮气中二氧化硫气体浓度测量不确定度的评定

采用紫外荧光法测定氮气中的二氧化硫气体浓度的测量不确定度.充分考虑重复测量的重现性、测量仪器的计量性能局限性、标定仪器所用的标准气体等因素对测量的影响,计算氮气中的二氧化硫气体浓度测量合成标准不确定度为0.4.