scholarly journals The estimation of formaldehyde concentration in indoor air

2018 ◽  
Vol 245 ◽  
pp. 03003 ◽  
Author(s):  
Marina Meshalkina ◽  
Viktor Sushnikov ◽  
Nadezhda Kryzhova
Keyword(s):  
Indoor Air ◽  
Important Task ◽  
Photometric Method ◽  
Hazardous Substance ◽  
Formaldehyde Concentration ◽  
Public Buildings ◽  
Acetyl Acetone ◽  
Confined Spaces ◽  
A Priority

This article is devoted to the measurement of formaldehyde emissions from furniture materials in the classes of St. Petersburg Polytechnic University and kindergartens. An important task of society is to preserve the health of children and students, since they spend a large amount of time in public buildings. The safety of indoor air depends from the materials of which the finishing materials and furniture are made. Formaldehyde is a priority hazardous substance released into the air of confined spaces. Studies were conducted not only for the amount of formaldehyde in the air in the room, but also for the materials from which the furniture was made. Small-sized installation was made for sampling formaldehyde emissions from furniture materials. These emissions were investigated by the photometric method with acetyl acetone reagent. The installation can be used to study the emissions parameters of other components that can be separated from finishing materials and furniture.

Performance of the Radiello® diffusive sampler for formaldehyde measurement: the influence of exposure conditions and ozone interference

2015 ◽  
Vol 7 (13) ◽  
pp. 5497-5503 ◽  
Author(s):  
Jane Vignau-Laulhere ◽  
Hervé Plaisance ◽  
Pierre Mocho ◽  
Katarzyna Raulin ◽  
Yves Bigay ◽  
...  
Keyword(s):  
Indoor Air ◽  
Sampling Time ◽  
Formaldehyde Concentration ◽  
Diffusive Sampler ◽  
Exposure Conditions

The radial diffusive standard sampler Radiello® filled with Florisil impregnated with 2,4-dinitrophenylhydrazine (DNPH) was evaluated with the goal of survey monitoring the formaldehyde concentration in indoor air for a 4.5 day sampling time.

Investigation of window-opening behaviour and indoor air quality in dwellings situated in the temperate zone in China

2020 ◽  
pp. 1420326X2092474
Author(s):  
Tingxuan Deng ◽  
Xiong Shen ◽  
Xiaojie Cheng ◽  
Junjie Liu
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Temperate Zone ◽  
World Health ◽  
Formaldehyde Concentration ◽  
Short Term ◽  
Night Time ◽  
Window Opening

Indoor air quality (IAQ) is a key factor that could affect the indoor environment and people's health. In this study, we report a comprehensive study on IAQ in 30 dwellings in the temperate zone in China. Thirty naturally ventilated dwellings were selected in the urban area of Kunming, which is the largest city in temperate zone in China. In four seasons, short-term measurement of formaldehyde and benzene, toluene, xylenes-volatile organic compounds and air infiltration rate were conducted in these dwellings. A long-term 1-year monitoring of temperature, relative humidity, fine particulate matter (PM2.5), carbon dioxide (CO2), window-opening behaviour and night-time air change rate (ACR) were conducted in 13 of these dwellings by remote sensors. Short-term measurements showed the mean formaldehyde concentration in summer (100.76 μg/m3), benzene concentration in winter (8.46 µg/m3), PM2.5 concentration (80.4 µg/m3) in spring of 2017 exceeded the Chinese standard, the US Office of Environmental Health Hazard Assessment value and the World Health Organization guidelines. The night-time ACR was the highest in summer (2.1 h−1) and the lowest in winter (1.6 h−1) in bedrooms of 13 long-term monitored dwellings due to seasonal time variation in window opening in bedrooms, which was mainly driven by CO2 concentration, indoor temperature and outdoor PM10 concentration.

scholarly journals Assessment of microbiological indoor air quality in public buildings: A case study (Timisoara, Romania)

2013 ◽  
Vol 7 (19) ◽  
pp. 1957-1963
Author(s):  
Cristina Vlad Daliborca ◽  
Popescu Roxana ◽  
Nicoleta Filimon Marioara ◽  
Gurban Camelia ◽  
Tutelca Ancuta ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Public Buildings

scholarly journals Near Real-Time Monitoring of Formaldehyde in a Low-Energy School Building

Atmosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 763 ◽  
Author(s):  
Claire Trocquet ◽  
Pierre Bernhardt ◽  
Maud Guglielmino ◽  
Isabelle Malandain ◽  
Céline Liaud ◽  
...  
Keyword(s):  
Real Time ◽  
Indoor Air ◽  
Reference Method ◽  
Analytical Techniques ◽  
Health Impact ◽  
Formaldehyde Concentration ◽  
Multiple Sources ◽  
Major Interest ◽  
Indoor Air Pollutants

The emergence of new super-insulated buildings to reduce energy consumption places the quality of indoor air at the center of the debate. Among the indoor air pollutants, aldehydes are often present, and formaldehyde is of major interest regarding its multiple sources and its health impact. Therefore, French regulations expect to reduce formaldehyde concentrations below 10 μg m−3 in public buildings by 2023. Formaldehyde and other aldehydes were measured for two weeks during an intensive field campaign conducted in a school recently built and equipped with programmable dual-flow ventilation. Aldehydes were monitored with the ISO 16000-3 reference method based on sampling with 2,4-dinitrophenylhydrazine (DNPH) tubes while formaldehyde concentration was continuously measured by using a sensitive near real-time formaldehyde microanalyzer with a detection limit of 1 µg m−3. Formaldehyde was the major aldehyde. Its concentrations varied in the range of 2–25 µg m−3 and decreased by half when mechanical ventilation was ON, while the other ones were always below 5 µg m−3. In addition, an excellent agreement was observed between the different analytical techniques deployed to quantify formaldehyde levels. The microanalyzer was able to measure fast variations of formaldehyde concentration in the studied room, according to the building's ventilation periods.

ON JUSTIFICATION OF CHANGES IN THE RADON CONTENT RATIONING IN INDOOR AIR

2019 ◽  
pp. 42-48
Author(s):  
I.K. Romanovich ◽  
Т.А. Kormanovskaya ◽  
D.V. Kononenko
Keyword(s):  
Russian Federation ◽  
Indoor Air ◽  
Background Radiation ◽  
Economic Feasibility ◽  
Reference Level ◽  
Public Buildings ◽  
Safety Standards ◽  
Hygienic Standard ◽  
The Russian Federation ◽  
Radon Content

The deadline for the development of the final draft of the new radiation safety standards RSS-2019, harmonized with international recommendations, including the regulation of radon content in the indoor air of residential and public buildings is expected to be finished in 2019. We estimated the possibility and expediency for replacement of the hygienic standard established in RSS -99/2009 with the reference level recommended by the International Basic Safety Standards of IAEA GSR Part 3 on the basis of data analysis results on radon content levels in indoor air of residential and public buildings on the territory of subjects of the Russian Federation. An analysis of the array of measurements results for radon content with a volume of 680,301 measurements taken during the period from 2001 to 2017 in the subjects of the Russian Federation collected as part of Unified State System for Control of Individual Exposure Doses and stored in the Federal database of exposure doses of citizens of the Russian Federation due to the natural and man-made background radiation was carried out. Absolute and relative estimates of the number of radon EEVA values exceeding 200, 150 and 120 Bq/m3 were obtained, both for individual regions and for the country as a whole. The results show that the reduction of hygienic standard of radon EEVA will increase the share of the non-compliant regulatory instruments of residential and public buildings up to 150 Bq/m3 almost in 2 times, up to 120 Bq/m3 almost in 3 times on average in Russia. We formulated a number of proposals aimed at harmonizing the Russian standards of radon content in indoor air with the IAEA recommendations taking into account the economic feasibility and while maintaining the possibility of monitoring compliance with the requirements of radiation population safety.

Purification of Indoor Formaldehyde Using Ornamental Plant of Kafirlily

2012 ◽  
Vol 550-553 ◽  
pp. 1473-1476
Author(s):  
Wen Xia Zheng ◽  
Ying Ming Chen ◽  
Ying Huang
Keyword(s):  
Air Pollution ◽  
Indoor Air ◽  
Stress Responses ◽  
Biochemical Parameters ◽  
Indoor Air Pollution ◽  
Physiological Stress ◽  
Ornamental Plant ◽  
Experimental Results ◽  
Formaldehyde Concentration ◽  
Physiological And Biochemical

In order to solve the indoor air pollution caused by formaldehyde, an ornamental plant of Kafirlily was used to purify the formaldehyde in this paper. By testing the absorbing effect on ornamental in the transparent airtight cabin, the physiological and biochemical parameters such as leaf hurt index and peroxidase (POD) activity were determined. The experimental results showed that the Kafirlily can decline the formaldehyde concentration to a certain degree, the leaves were hurt little, and the POD activity changed markedly. The experiments can indicate that Kafirlily can purify the indoor formaldehyde in certain concentration range with strong tolerant ability and high POD physiological stress responses.

scholarly journals Indoor Air Pollution and Human Perception in Public Buildings in Tianjin, China

2015 ◽  
Vol 121 ◽  
pp. 552-557 ◽  
Author(s):  
Yuexia Sun ◽  
Pan Wang ◽  
Qingnan Zhang ◽  
Hongting Ma ◽  
Jing Hou ◽  
...  
Keyword(s):  
Air Pollution ◽  
Indoor Air ◽  
Indoor Air Pollution ◽  
Human Perception ◽  
Public Buildings

scholarly journals Indoor air quality monitoring and human perception survey on air quality in public buildings in Timisoara

2021 ◽  
Vol 343 ◽  
pp. 10021
Author(s):  
Iudit Bere Semeredi ◽  
Mihai Eugen Valceanu ◽  
Diana Mihaela Nica ◽  
Ella Anca Sipetan ◽  
Romulus Corlan
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Pathogenic Bacteria ◽  
Human Perception ◽  
Working Environment ◽  
Quality Monitoring ◽  
Air Quality Monitoring ◽  
Upper Respiratory Tract ◽  
Public Buildings

The paper presents a study aimed at investigating the indoor air quality (IAQ) and people’s perception regarding the indoor environment of schools and public buildings in Timisoara. The indoor air quality monitoring was performed during the cold season, in the period January 2020 – February 2021. Six public buildings – schools and administrative edifices belonging to the municipality were subject of monitoring. An Andersen microbial air sampler was used to enumerate the numbers and different kinds of respirable bacteria and fungi inside of the selected classrooms and offices. The results of the specialized laboratory analyses indicate that the microbiological contaminant counts, expressed in colonyforming unit (CFU/m3), fall within the permissible limits for all monitored rooms. No beta-hemolytic streptococci or Staphylococcus aureus were identified, conditionally pathogenic bacteria for the upper respiratory tract. Most moulds were of the genus Penicillium, without having a pathogenic significance for humans. Occupants’ perception on indoor air quality, thermal comfort, health complaints and symptoms such allergies or respiratory illnesses with possible connection to the Sick building syndrome were surveyed by questionnaire. The findings were analysed and a plan to improve IAQ in the public buildings was proposed, with specific measures to increase the comfort and health of the learning and working environment.

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