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.

Observing Negative Air Ions Concentration in Beidaihe and Negative Air Ions’ Evaluation Standard

2012 ◽  
Vol 178-181 ◽  
pp. 747-750
Author(s):  
Yu Guo Zhuo ◽  
Jun Liu
Keyword(s):  
Health Care ◽  
Human Health ◽  
Air Ions ◽  
Evaluation Standard ◽  
Negative Air Ions ◽  
Occurrence Mechanism ◽  
The Relationship

The concept and occurrence mechanism of negative air ions (NAI) was introduced and its health care function was described. Through observing NAI concentration of six spots in Beidaihe in China, NAI evaluation standard which has seven grades is put up and the relationship between negative air ion quantity and human health is clarified clearly.

scholarly journals Renewable Energy Sources vs. an Air Quality Improvement in Urbanized Areas - the Metropolitan Area of Kraków Case

2021 ◽  
Vol 9 ◽  
Author(s):  
Rafał Blazy ◽  
Jakub Błachut ◽  
Agnieszka Ciepiela ◽  
Rita Łabuz ◽  
Renata Papież
Keyword(s):  
Air Quality ◽  
Metropolitan Area ◽  
Renewable Energy Sources ◽  
Well Being ◽  
Air Pollutant ◽  
Pollutant Emissions ◽  
Single Family ◽  
Air Quality Improvement ◽  
The Government ◽  
Selection Of

The premise for the selection of the topic discussed in this article is the lack of research on the level of reduction of air pollutant emissions by the use of photovoltaic micro-installations in single-family buildings, both in Poland and other countries of Central and Eastern Europe. Therefore, the Authors made an attempt to estimate the scale of air pollution reduction (in particular CO2) in the area of the urbanized Metropolitan area of Krakow, which is one of the most polluted regions in Poland. The installation of photovoltaic panels on single-family buildings, co-financed by the government My Electricity Program, is the investment cost in improving the air quality in this region, and thus increasing the well-being of its inhabitants.

Designing a Negative Air Ions Distribution Pattern for Human Health in a House Garden by Using Geostatistical Approach and a Negative Air Ion Generates Experiment

2011 ◽  
Vol 121-126 ◽  
pp. 2648-2652
Author(s):  
Chen Fa Wu ◽  
Wen Huang Lin
Keyword(s):  
Standard Deviation ◽  
Human Health ◽  
Hybrid Approach ◽  
Air Ions ◽  
Negative Air Ions ◽  
Geostatistical Approach ◽  
Health Concept ◽  
Set Up ◽  
Central Taiwan ◽  
Kriging Estimation

The purpose of this research is to design a negative air ions (NAI) distribution for a house garden in enhancing human health. This study presented an effective approach in integrating air ion monitoring, variograms, Kriging and sprinkler experiment, based on a case study in central Taiwan. Twelve months monitoring of the air ion at thirty sample sites is an effective method for generating spatial and temporal NAI concentrations in the study areas. The measurement results showed that the lowest mean and standard deviation of NAI occurred in January. The highest mean and standard deviation value of NAI occurred in July and June. Factors that impact NAI concentration include types of NAI source, landscape layout, distances to NAI source. The ability of waterfall to generate NAI is larger than sprinkler. The area close to waterfall and far to sprinkler is high NAI concentration. Kriging estimation is useful in evaluating and mapping of spatial negative air ions patterns in a house garden. The maps showed the highest NAI next to the waterfall and lower NAI are the areas next to the entrance of the garden and residence. An experiment found that sprinkler has high ability to generate NAI through the Lenard effect. According to the map which sums up the twelve months NAI concentration, the study garden should set up three sprinklers to increase 5.28 times more NAI concentration, increases 7.56 times of mean NAI when there was any sprinkler. This study provides a hybrid approach to assess and mapping the patterns of negative air ions for future garden design with health concept.

Indoor Radon in public schools, a preliminary study in Central Portugal

2021 ◽  
Author(s):  
Carla Candeias ◽  
Alcides Pereira ◽  
Fernando Rocha
Keyword(s):  
Public Schools ◽  
Air Quality ◽  
Human Health ◽  
Indoor Air ◽  
Nursery School ◽  
Indoor Radon ◽  
Well Being ◽  
World Health ◽  
Air Contamination ◽  
Adverse Health Effects

<p>Good air quality is considered to be a basic condition for human health and well-being. Exposure to air contamination is undoubtedly associated with diverse adverse health effects, particularly in vulnerable population subgroups such as children. Regions with natural Radon gas (Rn) emissions are of major concern worldwide, due to the negative impacts on Air Quality. Being colorless and odorless, Rn cannot be detected by humans. Natural/geogenic Rn contribution to indoor air is considered a leading cause of lung tumors by the World Health Organization. Portugal implemented the 2013/59/Euratom directive in 2018, establishing ionizing radiation guidelines with an indoor air Rn maximum of 300 Bq/m<sup>3</sup>.</p><p>Guarda district (Portugal) is known for the natural geogenic Rn emissions and its impact on indoor Air Quality. A preliminary indoor Rn gas monitoring study was undertaken in 2019 (3 months period, March to May) in all the public schools (nursery to high school) of of Guarda city. A mean concentration of 1145 Bq/m<sup>3</sup> was monitored, with a maximum value of 3604 Bq/m<sup>3</sup> in a nursery school. From the twenty schools monitored, only five schools presented indoor Rn concentration bellow the Portuguese legislation and none bellow the WHO guideline of 100 Bq/m<sup>3</sup>. These results displayed an urgent and mandatory need for advanced and intensive air monitoring campaigns and assessment of implications on human health, especially in children during school hours, where they can stay up to 10 h/day.</p>

scholarly journals UNDERSTANDING THE PHOTODEGRADATION MECHANISM OF GASEOUS ACETALDEHYDE OVER BI2WO6 — MODIFIED ZNWO4 PHOTOCATALYST UNDER UV LIGHT IRRADIATION

2021 ◽  
pp. 53-59
Keyword(s):  
Photocatalytic Activity ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Human Health ◽  
Indoor Air ◽  
Layered Structure ◽  
Uv Light ◽  
Air Pollutant ◽  
Uv Light Irradiation ◽  
Photodegradation Mechanism

Indoor air quality has a significant impact on human health as people spend more time indoors. As a common indoor air pollutant, acetaldehyde is considered toxic when exposed to it for a prolonged period. The aim of this study is the enhancement of the photocatalytic activity of ZnWO4 with a monoclinic wolframite structure for degradation of gaseous acetaldehyde by modifying its surface with Bi2WO6 layered structure. The mechanisms behind the enhanced photocatalytic activity and the pathways for acetaldehyde photodegradation over the Bi2WO6-modified ZnWO4 photocatalyst are discussed

scholarly journals Social and Psychological Factors of Health and Well-being in Prayers and Narrations

2019 ◽  
Author(s):  
Shahabuddin Vahidi mehrjardi ◽  
Mohammadhossein Zarei mahmoodabadi
Keyword(s):  
Physical Health ◽  
Human Health ◽  
Psychological Health ◽  
Well Being ◽  
Religious Communities ◽  
Human Beings ◽  
Holistic View ◽  
The Status ◽  
Health And Well Being

The recommendations and instructions of the Prophet of Islam (PBUH) and the Imams (PBUT) as well as the effect of acting according to them are subjects of particular interest to all the believers. The explanation and description of these commands in different areas and their impacts on the health and hygiene are important for the religious and non-religious communities and can be useful for everyone. This research was carried out to determine the status of health and well-being in prayers and narrations using a combination of theology, psychology, and sociology approach. The results of this research showed that the prayers and narrations considered the health and hygiene of human beings in all dimensions, so that acting according to the religious trainings and instructions provided by the infallibles (PBUH) can guarantee human health. There are many instructions and suggestions in the prayers and narrations about physical and non-physical health. In the field of physical health, instructions are given for eating, drinking, marital matters, etc., observance of which ensures the human health. The orders in non-physical area can be divided into three categories of psychological, theological, and social. Most religious ethical advices (whether positive or negative) focus on the psychological health of humans, such as stinginess, envy, fear, and hypocrisy. Since belief and faith play a fundamental role in the formation and quality of behavior as well as the personality of human beings, Islam has emphasized on the appropriateness of believing systems in humans. In the area of ​​social well-being, Islam has strict orders to avoid ignorance, oppression, divisions, and covenants that can eliminate the productive and peaceful coexistence and hinder the growth of human beings. Although in this research, health and hygiene were divided into several aspects, we should have a holistic view on them.

scholarly journals Potential Sources, Formation Routes, and Health Effects of Nitrogen Dioxide (NO2) on Indoor Air Quality, Human Health, Safety, and the Environment: A Review

2021 ◽  
pp. 94-103
Keyword(s):  
Air Quality ◽  
Nitrogen Dioxide ◽  
Indoor Air Quality ◽  
Human Health ◽  
Health Effects ◽  
Indoor Air ◽  
Air Pollutant ◽  
Human Beings ◽  
Health Safety ◽  
Potential Sources

Since human beings spend 80-90% of the day inside houses, educational and recreation centers, office blocks, or automobiles, the quality of air within these buildings or structures is crucial for human health and safety. Hence, indoor air quality (IAQ) highlights the general characteristics of indoor air that affect the state of health, thermal comfort, and well-being of humans. Despite numerous regulatory standards, framework policies, and monitoring plans proposed for IAQ, the occurrence of indoor pollutants including radon (Rn), ozone (O3), and oxides of carbon, sulfur, and nitrogen have become common. Many studies contend that nitrogen dioxide (NO2) is a major indoor air pollutant and one of the most poisonous on Earth. It is a reddish-brown gas generated from the oxidation of nitrogen oxides (NOx) and molecular oxygen or O3 or the high-temperature combustion of solid fuels. This paper presents an overview of the potential sources, formation routes, and health effects of NO2. According to reviewed literature, the occurrence, concentrations, and ratios of NO2 in the indoor environment are affected by residential factors, weather/climate, and proximity to NO2 sources indoors, such as burners, ovens, and stoves. Furthermore, long-term exposure to NO2 causes diabetes, heart, cardiovascular, hypertension diseases, severe cough, hemoptysis, pediatric lung edema and, more recently, fatalities arising from COVID-19. Therefore, the overdependence on polluting fuels that generate NO2 must be minimized or eliminated to improve IAQ and protect human health, safety, and the environment. Future design plans for constructing kitchens, homes, offices, automobiles, factories, and power plants must incorporate smart sensors or ventilation systems for detecting, monitoring, or removal of exhaust gases, including NO2.

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.

Progress of negative air ions in health tourism environments applications

2018 ◽  
Vol 33 (1) ◽  
pp. 27-46 ◽  
Author(s):  
FT Lazzerini ◽  
MT Orlando ◽  
W De Pra
Keyword(s):  
Air Ions ◽  
Health Tourism ◽  
Negative Air Ions
Sign in / Sign up

Export Citation Format

Share Document