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1.
影响室内空气品质的VOC特性及其定量评估   总被引:11,自引:0,他引:11  
忻尚杰  程宝义  朱培根 《暖通空调》2002,32(3):34-35,59
介绍了用于挥发性有机化合物评估的空气耗氧量(COD)指标,阐述了COD与室内空气品质其他指挥的显著相关性,指出空气耗氧量是综合性很强的空气污染指标。指出了改善室内空气品质的技术和措施。  相似文献   

2.
甲醛与室内空气品质   总被引:1,自引:0,他引:1  
简要介绍了甲醛的来源,对人体健康的危害,定量测量室内甲醛浓度的一般方法,降低室内甲醛浓度的措施,着重介绍了使用分析方法测量甲醛浓度的原理以及使用触媒技术降低室内甲醛的浓度的方法。  相似文献   

3.
新的室内空气品质舒适方程   总被引:6,自引:1,他引:5  
本文介绍一种新的通风理论,这种理论考虑了所有存在的污染源,并在新的空气品质舒适方程中将其定量化。这个方程是以新的单位 olf 和 decipol 将相当于人所感觉的  相似文献   

4.
关于居室内的空气品质题   总被引:1,自引:0,他引:1  
说明产生室内空气品质问题的原因,分析居室内空气对人体健康的影响,并提出改善居室内空气品质的途径。  相似文献   

5.
朱静波 《浙江建筑》2006,23(10):81-82
对室内空气中TVOC检测的采样条件和气相色谱分析条件进行了实验,主要考察了采样流量、采样时间、采样效率、采样流量校正、程序升温速率对TVOC检测结果的影响,分析了上述因素的影响程度及可以采取的处理方法。  相似文献   

6.
7.
办公楼的室内空气品质与新风   总被引:9,自引:1,他引:9  
根据对上海市区7幢甲级办公楼的室内空气品质和新风量的现场测试结果,试图分析办公楼的室内空气品质和新风量的关系,以及室外空气品质对室内空气品质的影响。  相似文献   

8.
室内空气品质及其主要影响因素   总被引:3,自引:1,他引:3  
介绍了人们对室内空气品质的认识和评价现状,并着重分析综述了影响室内空气品质的因素。  相似文献   

9.
室内挥发性有机物的研究进展   总被引:2,自引:0,他引:2  
室内挥发性有机物(VOCs)主要来源于建筑及建筑装修材料,具有极强的危害性,因此研究VOCs的散发、室内变化规律及其控制方法是极其必要的。本文介绍了国内外学者及团体对室内挥发性有机物研究的现场调查、实验模拟、理论模型探索方面的进展及控制策略,分析了目前研究中存在的问题,提出了今后研究工作的方向。  相似文献   

10.
空调系统新风和回风对室内空气品质的影响   总被引:3,自引:0,他引:3  
分析了目前空调系统新风和回风对室内空气品质的影响,认为室内污染的不断增加是室内品质变坏的主要原因;新风的质量直接影响室内空气品质;回风是室内空气的二次污染源,导出了回风对室内空气污染的理论计算公式,文中认为新风率是20%能明显提高室内空气品质。  相似文献   

11.
Due to the high health risks associated with indoor air pollutants and long-term exposure, indoor air quality has received increasing attention. In this study, we put emphasis on the molecular composition, source emissions, and chemical aging of air pollutants in a residence with designed activities mimicking ordinary Hong Kong homes. More than 150 air pollutants were detected at molecular level, 87 of which were quantified at a time resolution of not less than 1 hour. The indoor-to-outdoor ratios were higher than 1 for most of the primary air pollutants, due to emissions of indoor activities and indoor backgrounds (especially for aldehydes). In contrast, many secondary air pollutants exhibited higher concentrations in outdoor air. Painting ranked first in aldehyde emissions, which also caused great enhancement of aromatics. Incense burning had the highest emissions of particle-phase organics, with vanillic acid and syringic acid as markers. The other noteworthy fingerprints enabled by online measurements included linoleic acid, cholesterol, and oleic acid for cooking, 2,5-dimethylfuran, stigmasterol, iso-/anteiso-alkanes, and fructose isomers for smoking, C28-C34 even n-alkanes for candle burning, and monoterpenes for the use of air freshener, cleaning agents, and camphor oil. We showed clear evidence of chemical aging of cooking emissions, giving a hint of indoor heterogeneous chemistry. This study highlights the value of organic molecules measured at high time resolutions in enhancing our knowledge on indoor air quality.  相似文献   

12.
本文对上海市20户毛坯房(23个自然间)和95户精装房(133个自然间)进行了甲醛、氨、苯、TVOC和氡浓度测定,结果显示毛坯房5项指标均未出现超标,精装房室内空气污染较为严重,除氨和氡外,甲醛、苯和TVOC均出现超标,超标率分别为33.4%、2.6%和53.2%。通过对TVOC的组分浓度占比分析,乙酸丁酯、二甲苯和乙苯的浓度之和占约23%,未识别物质平均浓度占比超过8种标准物质成分总和,达到了74.49%。  相似文献   

13.
杨瑞梁  王仕元 《山西建筑》2008,34(15):158-159
针对常用电器对室内空气品质的危害,分析了常用电器对室内空气品质的影响,提出了改善常用电器对室内空气品质影响的措施,有助于增加人们对常用电器与室内空气品质关系的认识,以帮助人们更好地保护室内空气品质。  相似文献   

14.
Indoor Air Quality monitoring in cultural institutions is of particular concern to protect these places and the cultural heritage content. An indoor monitoring campaign was performed in three museums in Florence (Italy) to determine the occurrence and levels of volatile organic compounds (VOCs). VOCs of interest included BTEX (benzene, toluene, ethylbenzene, xylenes), terpenes, aldehydes, organic acids, and cyclic volatile methyl siloxanes (cVMS). The most abundant VOCs in all samples analyzed were BTEX, which were strictly related to the traffic source, followed by siloxanes and terpenes. Among BTEX, toluene was always the most abundant followed by xylenes, ethylbenzene, and benzene. cVMS in exhibition rooms with the presence of visitors showed higher values compared to samples collected when the museums were closed. Terpenes showed not only the influence of vegetation-biogenic sources surrounding a museum but could also be related to the wood used for the construction of showcases and furniture and the use of cleaning products. Data obtained also showed the presence of organic acids and aldehydes whose source can be traced back to exhibits themselves and wood-based furniture. Assessing the levels of organic acids in museums is important because, over time, it can cause deterioration of the artifacts.  相似文献   

15.
高彩凤  张欢  王斌  由世俊 《暖通空调》2006,36(7):106-109
为研究办公楼装修后室内挥发性有机物的释放特性,利用活性炭吸附采样与气相色谱分析相结合的方法,跟踪监测了天津市某办公楼四个典型房间的室内污染物浓度。得出了装修后室内污染物浓度的变化规律,即污染物浓度随时间推移而降低,其间可能会由于房间温度、相对湿度和气流组织的变化而出现短暂的起伏。  相似文献   

16.
A weekly monitoring campaign of volatile organic compounds (VOC), with single sampling of 24 h, was carried out in non-residential indoor environments such as libraries, pharmacies, offices, gymnasiums, etc., in order to evaluate the VOC concentrations to which people are exposed. Moreover, an outdoor sample was coupled to each indoor site to point out the influence of indoor sources. They were sampled with Radiello diffusive samplers for thermal desorption and analyzed by GC-MS. As already described in other papers, the VOC levels of most of the indoor sites were higher than that observed in the corresponding outdoor sites. For example, some sites showed a level of pollution that is ten times higher than their corresponding outdoor site. The monitored environments that had higher concentrations of the investigated VOC were the pharmacies, a newspaper stand, a copy center, and the coffee shops. Analysis of the weekly average concentrations of each pollutant and the use of literature allowed pointing out some site-specific characteristics that singled out possible sources of VOC. These results were verified analyzing the indoor-outdoor ratio (I/O) too. Newspaper stands were characterized by very high concentrations of toluene and pharmacies were characterized by high concentrations of aromatic compounds. PRACTICAL IMPLICATIONS: Indoor air pollution caused by volatile organic compounds (VOC) might affect human health at home as well as in public and commercial buildings. The main VOC sources in indoor environments are human activities, personal care products, smoking, house cleaning products, building products, and outside pollution. To preserve human health it is necessary to evaluate the average concentrations of VOC to which people are exposed and to identify the main sources of indoor pollution by means of suitable indoor monitoring campaigns in several environments. These investigations allow pointing out the characteristic critical situations of some indoor environments or some other types of environments.  相似文献   

17.
论述了室内空气质量的重要性以及室内挥发性有机物(VOC)对健康的危害,介绍了评价VOC污染的量化指标TVOC和减少室内VOC污染的技术和措施。  相似文献   

18.
室内空气净化技术的研究与进展   总被引:5,自引:0,他引:5  
王元元  张立志 《暖通空调》2006,36(12):24-27,39
介绍了净化室内不同空气污染物采取的相应净化技术,针对室内VOC,常用吸附法、光催化法、纳米材料净化法;针对室内空气颗粒物,主要采用机械过滤、静电除尘技术、低温等离子体技术、纳米光催化技术等,而微生物的净化主要是利用纳米TiO2光催化技术。还介绍了生物净化技术、膜分离技术等室内空气净化技术的最新进展。  相似文献   

19.
Perception of indoor air quality (PIAQ) was evaluated in a nationwide survey of 567 French dwellings, and this survey was combined with measurements of gaseous and particulate matter (PM10 and PM2.5) indoor air pollutants and indoor climate parameters. The perception was assessed on a nine‐grade scale by both the occupants of the dwellings and the inspectors who performed the measurements. The occupants perceived the air quality in their homes as more pleasant than the inspectors. The inspectors perceived the air quality as more unpleasant in dwellings in which the residents smoked indoors. Significant associations between PIAQ and indoor air pollutant concentrations were observed for both the inspectors and, to a lesser extent, the occupants. Introducing confounding parameters, such as building and personal characteristics, into a multivariate model suppressed most of the observed bivariate correlations and identified the tenure status of the occupants and their occupation as the parameters that most influenced their PIAQ. For the inspectors, perceived air quality was affected by the presence of smokers, the season, the type of ventilation, retrofitting, and the concentrations of acetaldehyde and acrolein.  相似文献   

20.
Alaska Native children experience high rates of respiratory infections and conditions. Household crowding, indoor smoke, lack of piped water, and poverty have been associated with respiratory infections. We describe the baseline household characteristics of children with severe or chronic lung disease participating in a 2012–2015 indoor air study. We monitored indoor PM2.5, CO2, relative humidity %, temperature, and VOCs and interviewed caregivers about children's respiratory symptoms. We evaluated the association between reported children's respiratory symptoms and indoor air quality indicators using multiple logistic regression analysis. Compared with general US households, study households were more likely overcrowded 73% (62%–82%) vs 3.2% (3.1%–3.3%); had higher woodstove use as primary heat source 16% (9%–25%) vs 2.1% (2.0%–2.2%); and higher proportion of children in a household with a smoker 49% (38%–60%) vs 26.2% (25.5%–26.8%). Median PM2.5 was 33 μg/m3. Median CO2 was 1401 ppm. VOCs were detectable in all homes. VOCs, smoker, primary wood heat, and PM2.5>25 μg/m3 were associated with higher risk for cough between colds; VOCs were associated with higher risk for wheeze between colds and asthma diagnosis. High indoor air pollutant levels were associated with respiratory symptoms in household children, likely related to overcrowding, poor ventilation, woodstove use, and tobacco smoke.  相似文献   

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