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.

scholarly journals Methodical issues of the monitoring for ammonium in indoors air

2019 ◽  
Vol 95 (10) ◽  
pp. 917-922 ◽  
Author(s):  
I. Sh. Iakubova ◽  
Yu. V. Dadaly ◽  
A. V. Mel’Tser ◽  
Lilia A. Alikbayeva ◽  
A. Yu. Zhirnov ◽  
...  
Keyword(s):  
Indoor Air ◽  
Standard Method ◽  
Field Tests ◽  
Air Sampling ◽  
State Standards ◽  
Comparative Assessment ◽  
Sampling Time ◽  
Short Term ◽  
Material Costs ◽  
Iso 5725

Introduction. To perform mass studies of the indoors air environment of the ammonium content the actual issues are the shortening of the sampling time and material costs for their implementation, reduction of adverse effects of ammonium with keeping of the objectivity of results. Aim. The elaboration of the method of short-term air sampling for indoors ammonium and comparative assessment ofdifferent methods of sampling in the course of modeling and field tests. Materials and Methods. Air sampling for ammonium was carried out according to the developed program and standard method, under the average daily 4-fold taking according to State Standards (GOST) 17.2.3.01-86 andRD 52.04.186-89. The evaluation of the significance of deviations of analysis results was carried out in accordance with GOST R ISO 5725-6-2002 and Recommendations of the Interstate Standardization RMG - 61-2003. Results. There were executed model and field tests of air sampling for ammonium according to the standard method and the program of short-term sampling. There were obtained significantly comparable results of ammonium content in the indoor air in the course of model and field tests. Conclusions. Sampling according to the developed program has a number of advantages, including: the shortening of sampling time, material costs, increasing in productivity in the analysis of indoor airfor the ammonium content. The execution oftest sampling according to the developed program allows to reduce the time of ammonium exposure to personnel carrying out the test sampling.

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 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.

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.

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 Colorimetric pad for low-concentration formaldehyde monitoring in indoor air

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Watcharaporn Wongsakoonkan ◽  
Sumate Pengpumkiat ◽  
Vorakamol Boonyayothin ◽  
Chaiyanun Tangtong ◽  
Wisanti Laohaudomchok ◽  
...  
Keyword(s):  
Shelf Life ◽  
Indoor Air ◽  
Low Cost ◽  
Formaldehyde Concentration ◽  
Color Intensity ◽  
Direct Reading ◽  
Content Type ◽  
Low Concentration ◽  
Time Accuracy ◽  
User Friendly

PurposeThe purpose of this study was to develop an accurate, selective, low-cost and user-friendly colorimetric pad to detect formaldehyde at low concentration.Design/methodology/approach1-phenyl-1,3-butanedione, a reactive chemical, was selected to develop the colorimetric pad for indoor air formaldehyde measurement. Silica nanoparticle impregnated with the reactive chemical was coated on the cellulose filter surface to increase the reactive site. A certified formaldehyde permeation tube was used to generate six varied concentrations between 0.01 and 0.10 ppm in a test chamber. The color intensity on the pads was measured using an image processing program to produce a formaldehyde concentration reading chart. The colorimetric pad was tested for optimum reaction time, accuracy, precision, stability, selectivity and shelf life.FindingsThe color of the pads changed from white to yellow and the color intensity varied with the concentrations and appeared to be stable after exposure to formaldehyde for 8 hours. At room temperature, the stability of the pad was 7 days, and shelf life was 120 days. The accuracy, precision and bias of the pad were 12.38%, 0.032 and 6.0%, respectively. Carbonyl compounds, benzene and toluene did not interfere with the reading of this developed colorimetric pad.Originality/valueThe developed colorimetric pad meets NIOSH's criteria for an overall accuracy of ±25%, bias = 10%. They were accurate at low concentrations, user-friendly and had low cost compared to an electronic direct reading instrument (cost of chemicals and materials was 21.50 Bath or 0.69 USD per piece) so that favorable for the use of general people for health protection.

Discussion on Indoor Formaldehyde Treatment

2012 ◽  
Vol 178-181 ◽  
pp. 280-283 ◽  
Author(s):  
Chun Feng Xia
Keyword(s):  
Indoor Air ◽  
Pollution Sources ◽  
Formaldehyde Concentration ◽  
Interior Decoration ◽  
Treatment Methods ◽  
Advantages And Disadvantages ◽  
Formaldehyde Treatment ◽  
The Invisible

The paper summarizes the major indoor air formaldehyde pollution sources and major pollutants, introduces the harm of indoor formaldehyde, the interior decoration, decoration, and so brought about by the invisible pollution day and night against the people's health, briefly introduces several method of reducing indoor formaldehyde concentration and analyzing advantages and disadvantages to the different treatment methods.

scholarly journals Sampling Methods and Residential Factors Affecting Formaldehyde Concentration in Indoor Air.

2001 ◽  
Vol 195 (4) ◽  
pp. 227-236 ◽  
Author(s):  
Yoko Endo ◽  
Takeji Miyazaki ◽  
Yoko Hikita ◽  
Michiyo Azuma ◽  
Hiroki Ikeda ◽  
...  
Keyword(s):  
Indoor Air ◽  
Sampling Methods ◽  
Formaldehyde Concentration ◽  
Factors Affecting
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