scholarly journals Impact of Microclimate and Indoor Plants on Air Ion Concentration

2015 ◽  
Vol 1 ◽  
pp. 66
Author(s):  
Natalia Sinicina ◽  
Andris Skromulis ◽  
Andris Martinovs
Keyword(s):  
Volatile Compounds ◽  
Human Health ◽  
Indoor Air ◽  
Ion Concentration ◽  
Air Ions ◽  
Indoor Plants ◽  
Ion Absorption ◽  
Air Ion Concentration

Saturation of air ions is essentially important for all living beings, especially for human health. Existing sanitary norms provide that concentration of small ions has to be in range of 400-50000 ions cm-3 and unipolarity coefficient 0.4 ≤ K ≤ 1.0. Many species of indoor plants emit organic volatile compounds and air ions, therefore they could be used for improving the quality of indoor air. The results show that ionization level of indoor air is significantly insufficient and selected species of indoor plants are not able to improve it. They serve rather as supplementary surfaces for ion absorption. Possible interaction between microclimate, ion concentration and indoor plants in different times of the day is analyzed.

scholarly journals Negative Air Ions and Their Effects on Human Health and Air Quality Improvement

2018 ◽  
Vol 19 (10) ◽  
pp. 2966 ◽  
Author(s):  
Shu-Ye Jiang ◽  
Ali Ma ◽  
Srinivasan Ramachandran
Keyword(s):  
Human Health ◽  
Indoor Air ◽  
Psychological Health ◽  
Well Being ◽  
Air Pollutant ◽  
Therapeutic Effects ◽  
Air Ions ◽  
Air Cleaning ◽  
Negative Air Ions ◽  
Air Quality Improvement

Negative air ions (NAIs) have been discovered for more than 100 years and are widely used for air cleaning. Here, we have carried out a comprehensive reviewing on the effects of NAIs on humans/animals, and microorganisms, and plant development. The presence of NAIs is credited for increasing psychological health, productivity, and overall well-being but without consistent or reliable evidence in therapeutic effects and with controversy in anti-microorganisms. Reports also showed that NAIs could help people in relieving symptoms of allergies to dust, mold spores, and other allergens. Particulate matter (PM) is a major air pollutant that affects human health. Experimental data showed that NAIs could be used to high-efficiently remove PM. Finally, we have reviewed the plant-based NAI release system under the pulsed electric field (PEF) stimulation. This is a new NAI generation system which releases a huge amount of NAIs under the PEF treatment. The system may be used to freshen indoor air and reduce PM concentration in addition to enriching oxygen content and indoor decoration at home, school, hospital, airport, and other indoor areas.

scholarly journals The Role of Indoor Plants in air Purification and Human Health in the Context of COVID-19 Pandemic: A Proposal for a Novel Line of Inquiry

2021 ◽  
Vol 8 ◽  
Author(s):  
Rania El-Tanbouly ◽  
Ziad Hassan ◽  
Sarah El-Messeiry
Keyword(s):  
Human Health ◽  
Indoor Air ◽  
Transmission Rate ◽  
Mitigation Measures ◽  
Air Purification ◽  
Negative Consequences ◽  
Viral Spread ◽  
Indoor Plants ◽  
Indoor Air Purification

The last two decades have seen the discovery of novel retroviruses that have resulted in severe negative consequences for human health. In late 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged with a high transmission rate and severe effects on human health, with 5% infected persons requiring hospitalisation and 3.81 million deaths to date globally. Aerosol particles containing virions are considered the main source of SARS CoV-2 transmission in this pandemic, with increased infection rates in confined spaces. Consequently, public and private institutions had to institute mitigation measures including the use of facial masks and social distancing to limit the spread of the virus. Moreover, the role of air purification and bio-decontamination is understood as being essential to mitigate viral spread. Various techniques can be applied to bio-decontaminate the air such as the use of filtration and radiation; however, these methods are expensive and not feasible for home use. Another method of air purification is where indoor plants can purify the air by the removal of air pollutants and habituated airborne microbes. The use of indoor plants could prove to be a cost-efficient way of indoor air-purification that could be adapted for a variety of environments with no need for special requirements and can also add an aesthetic value that can have an indirect impact on human health. In this review, we discuss the emergence of the COVID-19 pandemic and the currently used air purification methods, and we propose the use of indoor plants as a new possible eco-friendly tool for indoor air purification and for reducing the spread of COVID-19 in confined places.

scholarly journals DALY indicator as an assessment tool for indoor air quality impact on human health

2018 ◽  
Vol 49 ◽  
pp. 00133 ◽  
Author(s):  
Monika Wysocka
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Human Health ◽  
Indoor Air ◽  
Indoor Environment ◽  
World Health ◽  
Artificial Environment ◽  
Life Years ◽  
The Impact

The quality of indoor environment is an extremely important issue, because people spend large parts of the day inside buildings. The quality of the indoor environment is largely dependent on the quality of indoor air. The parameters of the air we breathe affect our health and comfort of room use. Currently, when energy efficiency is a priority, it is difficult to maintain comfort and conditions appropriate for human health. The artificial environment in a room and related inadequate air quality cause many diseases, such as asthma, lung diseases, cardiovascular diseases, as well as poor well-being and reduced productivity. The Disability Adjusted Life Years (DALY) indicator means “loss of life corrected by disability” and is widely used by the World Health Organization to measure a disease burden on the population and identify the causes of a disease. The aim of the article is to present the structure of the DALY indicator and its suitability to assess the impact of indoor air quality on human health. The most frequent diseases caused by low quality of internal air were analysed based on statistical data. In addition, the possibilities of ventilation solutions have been presented, leading to the improvement of air quality in indoor environment.

scholarly journals Indoor Ecosystem Services: Impacts of Plants on Air Quality

2019 ◽  
Vol 68 (1-2) ◽  
pp. 12-16
Author(s):  
Martina Zorić ◽  
Mitar Simić ◽  
Saša Orlović ◽  
Emina Mladenović ◽  
Zdenka Babić
Keyword(s):  
Carbon Dioxide ◽  
Ecosystem Services ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Human Health ◽  
Indoor Air ◽  
Sudden Increase ◽  
Measuring Device ◽  
Purification System

Summary Ecosystem services have been the focus of recent research on ecology, biodiversity and human health. As most of this research has placed emphasis on natural ecosystems, there is a lack of data on the effect of indoor and urban ecosystems on both human health and the quality of human life. One of the most common health issues associated with urban and indoor spaces is the quality of air. Considering that humans spend most of their time indoors, accompanied by a lack of fresh air due to industry growth and environmental degradation, there is an obvious need for a non-invasive and non-obtrusive air purification system. This paper presents the results of the indoor air quality monitoring under non-controlled conditions, i.e. the changes in air quality induced by the common indoor ornamental plant Sansevieria trifasciata ‘Laurentii’. The following air quality parameters were observed: the relative humidity and temperature of air, as well as the concentrations of carbon-dioxide, methane and overall VOCs. Measurements were performed using the commercial CO2 data logger Extech SD800 and the in-house developed Arduino Uno-based measuring device with different sensors. The results obtained show the changes in the indoor air quality relative to the presence or absence of the selected plants. A sudden increase in the overall VOC (NH3, NOx, benzene and smoke), methane and carbon-dioxide concentrations was recorded after the plants were removed from the indoor space. The purpose of this research is to form a basis for designing a biological purification system as a low-cost and environment-friendly method for the monitoring and purification of indoor air.

scholarly journals Influence of air humidity and the distance from the source on negative air ion concentration in indoor air

2006 ◽  
Vol 370 (1) ◽  
pp. 245-253 ◽  
Author(s):  
Chih Cheng Wu ◽  
Grace W.M. Lee ◽  
Shinhao Yang ◽  
Kuo-Pin Yu ◽  
Chia Ling Lou
Keyword(s):  
Indoor Air ◽  
Ion Concentration ◽  
Air Humidity ◽  
Air Ion Concentration

scholarly journals Effect of Environmental Factors on Air Ion Concentration

2015 ◽  
Vol 2 ◽  
pp. 274
Author(s):  
Andris Skromulis ◽  
Juris Breidaks
Keyword(s):  
Environmental Factors ◽  
Ion Concentration ◽  
Physical Parameters ◽  
Urban Air ◽  
Regression Equations ◽  
Air Ions ◽  
Atmospheric Air ◽  
Ion Concentrations ◽  
Air Ion Concentration ◽  
Ion Size

<p class="R-AbstractKeywords"><span lang="EN-US">The paper discusses and analyzes the effect of environmental factors on ion concentrations in urban air. Statistically mathematical method was used to analyze the measurements of air ion concentration collected in a period of several months, with ion size ranging from 0.75 to 36.6 nm. As environmental factors related to air ions, the following chemical and physical parameters of the atmospheric air were analyzed: CO, NO, NO<sub>2</sub>, NO<sub>x</sub>, SO<sub>2</sub>, O<sub>3</sub>, PM10, PM2.5, temperature, relative humidity, wind speed and direction. When analyzing data in this combination, there is often a problem of multicollinearity between air chemical and physical parameters. This paper addresses this problem by using the component regression. Regression equations were elaborated to understand the dependence of concentrations of various classes of positive and negative air ions on chemical and physical parameters of the air.</span></p>

scholarly journals INFLUENCE OF INDOOR POLLUTION AND PARAMETERS ON HUMAN HEALTH

2019 ◽  
Vol 7 ◽  
pp. 1015-1019 ◽  
Author(s):  
Rositsa Velichkova ◽  
Peter Stankov ◽  
Radositna A. Angelova ◽  
Iskra Simova ◽  
Detelin Markov
Keyword(s):  
Human Health ◽  
Indoor Air ◽  
Chemical Species ◽  
Ambient Air ◽  
Negative Consequences ◽  
Indoor Pollution ◽  
Physical Processes ◽  
Indoor Pollutants ◽  
Recreation Areas

Indoor air quality (IAQ) is an important issue, considering that modern people spend most of their time indoors in houses, workplaces, recreation areas. IAQ has a serious impact on human health, comfort, performance, and wellbeing. In order to minimize the negative consequences, considerable efforts are made to assure the high quality of the indoor air. In the present paper, indoor pollution is analysed in light of its effect on IAQ and human health. The indoor pollutants are due to the presence of higher concentrations of chemical species, physical processes or biologicals in the ambient air.  

Fluctuations of Annual Precipitation and Water Resources Quality in Ukraine

2016 ◽  
Vol 10 (4s) ◽  
pp. 621-629
Author(s):  
Valentina Pidlisnyuk ◽  
◽  
John Harrington JR ◽  
Yulia Melnyk ◽  
Yuliya Vystavna ◽  
...  
Keyword(s):  
Water Resources ◽  
Surface Waters ◽  
Precipitation Amount ◽  
Ion Concentration ◽  
Annual Precipitation ◽  
Resource Quality ◽  
Phosphate Ion ◽  
Regional Trends

The article focuses on examining the influence of fluctuations in annual precipitation amount on the quality of surface waters. Water quality was estimated with data on BOD, COD and phosphate–ion concentration within five selected regions of Ukraine. Analysis of the precipitation data (1991 – 2010) showed different regional trends. Using the statistics, determination of the interconnection between precipitation amount and water resources quality were done. The obtained regularities and associated uncertainties can be used for prediction of changes in water resource quality and as a guide for future adaptation to possible climate change.

Health and Physical Activity in Urban Neighbourhoods. Case Study: Shah Alam City, Selangor, Malaysia

2020 ◽  
Vol 17 (2) ◽  
pp. 11
Author(s):  
Oliver Hoon Leh Ling ◽  
Siti Nur Afiqah Mohamed Musthafa ◽  
Muhammad Solahuddin Hamzah ◽  
Marlyana Azyyati Marzukhi ◽  
Nurul Ashikin Mabahwi
Keyword(s):  
Human Health ◽  
Questionnaire Survey ◽  
Communicable Diseases ◽  
Health Condition ◽  
Environmental Aspects ◽  
Neighbourhood Environment ◽  
Healthy Life ◽  
Non Communicable Diseases ◽  
Urban Neighbourhoods

Environmental health is referring to the health of people in relation to environmental quality. Due to rapid urbanisation, more people are living in urban neighbourhoods. Urban planning and design aspects including the neighbourhood environment are potentially affecting the human healthy lifestyle and health condition. Thus, the relationship between Malaysian neighbourhood environmental aspects and human health has become the concern of this research. One of the neighbourhood units in Shah Alam city had been chosen as the study area for this purpose. Questionnaire survey had been carried out to examine the health condition and physical activeness of residents. Besides, the perception of residents on the quality of neighbourhood environmental aspects also had been collected in the questionnaire survey. The health condition of residents was measured by non-communicable diseases (NCD) and the physical activeness was measured in duration as well as the frequency of physical exercise activities. The study found that the quality of neighbourhood environmental aspects significantly increased the physical activeness of respondents. The physical activeness was positively associated with human health as measured in NCD (heart diseases and high blood pressure, HBP). It shows that neighbourhood environmental (physical and social) aspects are potentially affecting the healthy life of people living in the neighbourhood.Keywords: Healthy life, Neighbourhood environment, Non-communicable diseases (NCD), Physical activeness, Quality.

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