区域环境影响评价中有关污染物本底值的研究与确定

阐述了环境影响评价中大气污染物本底值对评价结果的影响 ,提出了现有污染源对各控制点的浓度贡献值应该包括污染源对各控制点的浓度值和控制点大气环境因子本底值等内容 ;并对大气污染物本底值及其计算方法提出独到见解     

机动车尾气对南京市道路环境空气质量的影响

调查 了南京市机动车尾气对道路环境污染的状况,分析了城市道路建设对空气质量的影响。指出,从1991年以来,南京市机动车总量和道路车流量持续快速增长,但由于城市道路条件的改善,道路通行能力有了较大的提高,道路两侧污染物NOx,CO浓度均有所下降,但仍分别高于对照点2.2倍、3.2倍,道路汽车排气对城市环境空气质量的影响不容忽视。提出,随着道路车流量的不断增加,要改善城市环境空气质量,必须推广清洁燃料以及低污染车和零污染车,同时进一步加强道路建设,提高车辆通行能力,增加植树绿化。     

燃煤电厂的硫平衡及SO2排放量的确定

对燃煤电厂的硫平衡进行了研究,同时对如何准确、简便的确定燃煤电厂SO2的排放量进行了探讨。     

密闭微波消解 ICP- AES 法测定大气颗粒物中金属元素

采用过氯乙烯滤膜采集、密闭微波消解、电感耦合等离子发射光谱法测定大气颗粒物中铅、镍、铬、铜、铁、锌、锰、钡、镉,优化了试验条件.方法线性良好,各元素的检出限在0.001 mg/L～0.01 mg/L之间,滤膜样品测定的RSD为0.6%～2.9%,加标回收率为96.0%～105%.     

睢宁地区大气PM_(2.5)及气态污染物季节性变化特征

根据2014年全年实时在线观测数据,分析了徐州睢宁地区大气细颗粒物(PM_(2.5))和气态污染物(包括SO_2、CO、NO_x、O_3)质量浓度的季节性变化特征。结合后向轨迹模型,分析不同气团对该地区大气污染浓度的影响。PM_(2.5)与O_3值在夏季最低,呈显著相关,表明夏季PM_(2.5)主要受控于本地大气光化学活性。在冬季,除O_3外,PM_(2.5)、SO_2、CO、NO_x值最高,且大气颗粒物主要以细粒子为主。O_3在春季最高,并与远程传输的气团且经过我国东部污染源密集地区相对应。高浓度的PM_(2.5)主要与冬季缓慢移动的气团相对应,这可能将PM_(2.5)及其气态前体物传输至该地区进而加重大气污染程度。     

通讯基站环境电磁辐射监管平台设计及运用

从移动通信基站电磁辐射的特点及管理要素入手,针对通信基站环境监管环节中存在的问题,设计通讯基站环境电磁辐射监管平台,提出合理有效的环境监管措施,实现历史监测数据、环评、验收资料电子化,信息公开化;通过平台开展电磁知识宣传教育,建立网络互动,有效遏制通讯基站建设违规行为,提高环保监管效率。     

1994—2010年东亚地区CO2浓度变化特征及成因分析

在东亚地区选取5个大气本底观测站1994年以来观测的 CO2监测资料,分析了各站大气 CO2的时空变化特征,以及 CO2主要人为源的变化及其影响。结果表明,5个本底站大气 CO2年均值均呈明显升高趋势,2010年较1994年增长幅度为8．4％～9．0％;在北半球国家,CO2月均值有明显的季节变化,高值多出现在冬春等寒冷季节,低值多出现在夏季。减少化石燃料消耗量、增加森林覆盖率及农业覆盖率将对大气中 CO2有削减作用。     

佳木斯大气污染物扩散影响因素及区域探究

对影响佳木斯市大气污染物扩散的因素进行了分析。结果表明,大气稳定度、垂直和水平温度梯度、低空风场引起的平流动力输送、地面粗糙度、湍流运动、雨雾等都不同程度地影响大气污染物的扩散,以一定的传输和扩散规律决定城市大气污染水平的高低,并由此使局部区域污染程度各不相同。城市热岛效应和温度层结是影响大气污染物扩散的重要因素。影响区域主要为城市主导风向下风向的城市东部地区。     

Design of an Air-Quality Surveillance System for Buenos Aires City Integrated by a NO x Monitoring Network and Atmospheric Dispersion Models

This paper presents an air-quality surveillance system designed to detect the occurrence of air pollutant concentrations greater than a reference level in an urban area. The system is integrated by an air-quality monitoring network and atmospheric dispersion models simulations. An objective methodology to design an urban air-quality monitoring network is proposed. This methodology is based on the analysis of air-quality modelling results. The procedure is applied to design an air-quality monitoring network to control NO _x concentration levels in Buenos Aires City. Results indicate that six monitors will detect the occurrence of concentration greater than the air-quality guidelines with an efficiency of about 67%. Once a violation is detected, results of atmospheric dispersion models will help in the determination of affected areas. Four possible examples are included to illustrate the assistance that the results of atmospheric dispersion models can bring to a better estimation of possible affected areas in the city. Combining these results with the last census data, an estimation of the inhabitants possibly exposed is obtained.     

Microbial densities and physico-chemical quality of some crude oil flow stations' saver pit effluents in the Niger Delta Basin of Southern Nigeria

Five crude oil flow stations saver pit effluents were sampledduring the months of May, June, July and August to determinesome of their physico-chemical qualities and microbiologicaldensities before their discharge into the environment. Standardanalytical techniques were employed in the investigation. A highmicrobial density in the range of 10⁶ cfu mL^-1 was observed in the samples. The high coliform count obtained poses apotential threat to the local inhabitants of the area. Thephysico-chemical qualities of the effluents appear to falloutside acceptable standards. The pH of the effluent fell belowthe desirable range of 7.0 to 8.5 in May and August inflowstations 3, 4 and 5. Total dissolved solids were above thehighest desirable levels for most months from June to August inall flowstations. Dissolved oxygen levels fell below minimumdesirable level of 2.0 mg L^-1 in August for flowstations 1, 2, and4. Adequate treatment of the effluent is required especiallyduring the month of August before discharge into the environment.