国产汽油车用催化转化器的机遇和挑战

本文首先回顾了国外汽油车用催化转化器发展历程，然后指出国产汽油车用催化转化器面临的发展机遇，     

潜艇空气污染与污染检测技术

根据国内外潜艇舱室大气污染的状况,论述了舱室主要污染物的来源、对人体的危害和污染物检测技术及发展趋势,为我国开展潜艇大气控制技术研究提供依据。     

车内空气污染物的危害及其检测方法的研究

简要介绍车内空气污染物的来源和危害;详细分析国内外车内空气质量的标准现状;重点阐述国内外车内空气质量的检测方法及其发展趋势。     

港口作业机械大气污染物排放研究

建立详细的大气污染物排放清单是港口企业实现精细化管理的基础,但目前有关大气污染物排放计算的研究还不充分。本文通过对大气污染物排放的计算方法分析,经过实地调研,选取本地化的污染物排放因子,采用燃料消耗法,对2013年龙潭集装箱港区主要大气污染物NOx,VOCs,CO,SOx和PM10的排放量进行计算,得出龙潭集装箱港口作业机械大气污染物排放清单,以此分析南京龙潭集装箱港节能减排潜力,并提出相应的改进措施。     

铝型树脂去除有机物染物（EDTA）的实验研究

采用EDTA模拟水体中污染阴树脂的有机物，考察了铝型树脂及混合床在与EDTA溶液接触过程中EDTA在树脂上的分布情况，判断铝型树脂减轻阴树脂污染程度的作用。     

车用压燃式发动机可见污染物排放统计研究

本文研究了车用压燃式发动机全负荷稳定转速和自由加速试验可见污染物排放之间的关系。采用不透光仪对19种型号188台样机进行了可见污染物试验。在大量的试验数据基础上，用数学统计的方法，对试验数据进行线性回归、相关系数和方差分析来研究两种可见污染物之间的内在联系，获得了一些有意义的信息和结果。     

荆江航道疏浚土优先控制污染物筛选研究*

以美国EPA优先控制污染物和中国优先控制污染物为基础,以文献报道长江水质污染物检测数据为依据,利用综合评分法结合德尔菲法筛选荆江航道疏浚土优先控制污染物。结果表明,荆江航道疏浚土优先控制污染物为农药、金属、多环芳烃、多氯联苯、酚类、苯类、挥发性卤代烃、酞酸酯类、全氟类等9大类污染物,主要集中在DDT、镉、铅和汞等10种污染物。鉴于以上优先控制污染物具有较强的环境持久性,在航道疏浚过程中应加强污染物的监测和评估。     

Modified Weighting for Calculating the Average Concentration of Non-Point Source Pollutant

The concentration of runoff depends upon that of soil loss and the latter is assumed to be linear to the value of EI that equals the product of total storm energy E times the maximum 30-min intensity，I^30 for a given rainstorm．Usually，the maximum accumulative amount of rain for a rainstorm might bring on the maximum amount of runoff，but it does not equal the maximum erosion and not always lead the maximum concentration．Thus，the average concentration weighted by amount of runoff is somewhat unreasonable．An improvement for the calculation method of non-point source pollution load put forward by professor Li Huaien is proposed．In replacement of the weight of runoff，E1 value of a single rainstorm is introduced as a new weight．An example of Fujing Rive rwatershed shows that its application is effective．     

地铁内空气品质的动态变化特性分析

采用室内污染物浓度演化的单箱物理模型,从质量守恒方程出发建立地铁内空气污染物的控制方程,并对其可靠性进行分析.结合地铁客流量随时间的变化规律,对站台和区间隧道内CO_2浓度的变化特性进行分析和评价.研究结果表明:在地铁的正常运营时段,站台内污染物浓度较稳定,空气品质较好;区间隧道内的污染物浓度随客流量变化而变化.空气品质较差;在非运营时段,CO_2浓度随时间呈负对数规律衰减,从提高地铁运行环境的角度,可考虑延迟关闭地铁通风系统;增加新风通入量可整体提高区间隧道内空气的品质.     

Optimal Total Vehicle Pollutants Emission Quantity Based on Link Traffic Capacity Constraints

With the growing of vehicles ownership, the vehicular exhaust emissions have become major sources of air pollution in cities. In this paper, the pollutants, carbon monoxide (CO), nitrogen oxides (NO_x), and hydrocarbon (HC) are considered as evaluation factors. On the basis of the relation between the emission factors and vehicle's velocity and the relation amongst three parameters (Volume, Speed, and Density) of traffic flow, we have designed a model. This calculates the total quantity of pollutants emission from vehicles based on speed, proportion of vehicle types, and traffic volume. Using the theory of nonlinear programming, we have formed an optimal model in which the link capacity is one main constraint and the minimum of the total quantity of pollutants emission is the goal and designed its algorithm solution. The aim of our research is to find a method to control the quantity of traffic pollutants emission through adjusting and controlling the composition of vehicle types, and then the traffic volume and vehicle's running speed indirectly. Finally, the feasibility of the model is justified through a practical example.