室内空气中二氧化硫的监测与分析

作者介绍室内空气中SO2的危害与来源。通过对居室空气中SO2实地监测，应用监测结果分析了一般居室中SO2的污染情况及居住环境对室内SO2的浓度影响，相关分析表明，在进行监测的所有居室中SO2含量大多数不超标，与国标相比，室内SO2含量是比较低的。     

可吸入颗粒物研究现状及发展趋势

职业卫生对可吸入颗粒物有着严格要求,为了弄清对可吸入颗粒物研究进展,借助于文献分析的研究方法,通过对可吸入颗粒物危害性、源解析、排放标准及检测、净化技术等的研究现状及发展趋势分析,得出对可吸入颗粒物携带毒物的规律性认识、各个地区城市可吸入颗粒物来源构成研究远未足够,同时提出了对可吸入颗粒物制定包括数量浓度在内的更为严格的排放标准及一种利用电除尘机理、湿式清洗及热泳技术等复合净化技术,并对可吸入颗粒物净化技术进行一定展望.     

植物对室内空气中甲苯的净化能力研究

室内空气质量与人们的生活息息相关.在诸多室内空气污染物中,甲苯是常见化学气态污染物之一.针对甲苯.采用熏蒸方法对2种常用室内观赏植物-芦荟和吊兰净化甲苯的效果进行了系统的研究,利用PGM-7240手持式VOC气体检测仪对甲苯进行了测定.结果表明,2种植物均具有净化甲苯的能力,24 h内可将环境测试舱中一次性发生的甲苯浓度降低55.4%～77.4%.     

工业二氧化硫排放监测研究

本文通过对涟钢除尘烟道中二氧化硫的综合监测，旨在研究涟钢二氧化硫的排放规律和扩散规律，以有效的对二氧化硫污染设施进行综合整治，提高大气环境质量，降低消耗，减少二氧化硫的危害。     

某小区新装修居室空气中苯系物的污染现状调查

本文简要分析了苯系物的特性、毒性、来源及释放过程,从而确定了室内空气中苯系物的最佳采样时间,选取了某小区18个家居场所作为检测对象,共检测61个房间.检测结果显示,苯系物采样场所中苯超标率100%,甲苯超标率21.3%,二甲苯超标率57.4%.     

河流突发性污染事故应急监测的几点探讨

笔者认为,河流突发性污染事故应急监测过程中除了现场监测过程和跟踪监测过程外,特殊情况下,还应实施总量监测过程。     

江西东乡铜矿重金属污染监测预警

矿山资源的盲目开发导致矿区和周围环境重金属污染十分严重,污染防治,已刻不容缓．本研究结合国内外关于环境质量预警方面的理论知识,设计了矿山环境监测预警的基本方法,以矿山重金属含量为评价指标,并对重金属的变化趋势、速度等方面进行预测预警．并且通过江西东乡铜矿的实例应用,分析有代表性的采样点,结果表明该矿区污染源1、2及尾矿库重金属污染程度较严重,从重金属综合污染指数的预警类型角度分析,2003年至2008年东乡铜矿重金属污染级别均已超过警戒线,从重金属单因子污染指数的预警类型角度分析,重金属Cu、Pb、Cd的污染程度较为严重,其次为重金属Zn、Ni_     

矿山地质灾害治理中监测预警技术的应用研究

矿山地质灾害将会导致大量生命财产损失。根据矿山地质的具体情况,对矿山地质灾害的危害程度作出相应的预警。目前,矿山地质灾害治理中监测预警技术已在国内得到了越来越多的重视。在这一背景下,文章对矿山地质灾害治理的主要内容进行了简要剖析,并对常用的监测预警技术进行了深入探索。     

Indoor Air Particulate Filtration onto Activated Carbon Fiber Media

Due to their bad effects on human health and comfort, removing particles and volatile organic compounds from indoor air has become an issue of major interest. In this study, the potential use of five media for particle removal was investigated: a felt, a cloth, and a knitted fabric made entirely of activated carbon fibers, and two prototype nonwovens made of different proportions of activated carbon and glass fibers. Dynamic filtration measurements were performed in experimental conditions as representative as possible of indoor air, with alumina particles (modal diameter: 0.37?μm), at an inlet concentration of 2,500?particles?cm?3 and for two different frontal velocities of air: 0.37 and 0.50?m?s?1. Although this medium was not designed for filtration, felt exhibited a high initial filtration efficiency (74%) for a low pressure drop (less than 210?Pa). Similarly, associating several layers of woven/knitted media in series led to high performances, as it reduced preferential paths for the airflow. Finally, prototype nonwovens appeared more efficient than activated carbon felt, but exhibited higher pressure drops.     

满足铜冶炼厂颗粒物特别排放限值的措施探讨

介绍了国内铜冶炼厂常见的收尘工艺流程,从前端(预收尘)、中端(布袋收尘)和末端(可增加的处理措施)三个方面逐个分析了提高收尘效率、满足颗粒物特别排放限值的要求的处理方法.     

Assessment of Indoor Air Quality in Interior Alaskan Homes

Interior Alaska has indoor air quality issues similar to those of other far northern communities associated with long cold winters and reduced ventilation rates. Moreover, geological features in the hills around Fairbanks, Alaska increase the likelihood of elevated radon levels. To better quantify these features, our team has gathered data at 68 homes. We used CO2 concentrations as a surrogate for indoor air quality as well as to help determine ventilation rates to be used in subsequent modeling work. We found the CO2 data correlated well using basic mass conservation considerations for yearly averages. The summer CO values ranged from 1 to 9 ppm and the winter values from 0 to 23 ppm. For homes with woodstoves, we found the indoor PM10 concentrations rose after the stoves were fired up. Here PM10 refers to particles smaller than 10 μm. Over 40% of the tested homes in the hills around Fairbanks had radon levels>4?pCi/L compared to a nationwide average of 7%. Active subslab depressurization systems tested were very effective in reducing indoor radon concentrations (average reduction of over 90% for eight homes).     

Sorption of Tertiary Butyl Mercaptan to Indoor Materials in Contact with Air or Water

This study reports sorption of the malodorant 2-methyl-2-propanethiol, commonly known as tertiary butyl mercaptan (TBM), to selected indoor materials. The phase distribution of TBM in gas-solid and aqueous-solid systems was evaluated using batch reactors. Sorbents used in the study included two carpets, two wallpapers, a soil, and granular activated carbon (GAC). Sorption was studied for gaseous and aqueous TBM concentrations spanning three orders of magnitude and contact times ranging from 1 to 28 days. The phase distribution data were plotted and fitted using linear and Freundlich relationships. Results indicated that all solids sorbed environmentally significant quantities of TBM, with the likelihood of producing concentrations above the odor threshold during subsequent remediation using mechanical ventilation. TBM retention by sorbents was greater from air than from water. The malodorant partitioned readily into wallpapers and slowly into the carpet materials. Sorption was nonlinear in the case of GAC and the nonlinearity appeared to increase with sorption contact time. GAC sorbed TBM strongly from both air and water.     

智能建筑空调系统监控方案浅析

根据智能建筑空调智能控制方案选择的不同特点，结合实际工程，浅析空调智能控制方案对监控投资的影响。     

Large-Eddy Simulations on Indoor/Outdoor Air Quality Relationship in an Isolated Urban Building

The airflow, pollutant dispersion and penetration of outdoor pollutants indoor in an isolated urban building are investigated computationally. The computation involves solving the two-dimensional Navier–Stokes equations using large eddy simulations based on the Smagorinsky subgrid scale model. The simulations involve investigations of the phenomena of airflow and pollutant dispersion in both indoor and outdoor environments under different Reynolds numbers with distinct combinations of building height, floor height, and building width. Pollutants originate from outdoor, located at the datum level of the windward side of the building. The objective is to study how outdoor pollutants penetrate indoor and relate this pattern to different building geometric configurations. The gradual increase in Reynolds number significantly favors pollutant transportation into the indoor environment and thus eventually changes the indoor/outdoor (IO) air ratio. Moreover, the value of the IO air ratio is particularly found to be highly affected by building height due to the capability of climbing over and escaping from the roof of the building. Results also show that the IO air ratio is dependent on the position of the sampling, which has been ignored in many previous experimental works. The research work poses important questions of indoor air quality as well as field measurements of the IO parameter.