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6016926 
Journal Article 
Pollution pattern of formaldehyde and TVOC in indoor air and its control measures 
Yin, X 
2017 
0 
Nature, Environment and Pollution Technology
ISSN: 0972-6268
EISSN: 2395-3454 
16 
2 
579-585 
English 
As primary indoor air pollutants, formaldehyde and total volatile organic compounds (TVOC) are characterized by a wide range of pollution sources, large concentration range and long release periods exist. These pollutants are important indicators for monitoring indoor air pollution. This paper analyses the classification and sources of main pollutants in indoor air, focuses on the pollution patterns of formaldehyde and TVOC in interior environments, and measures the relationships among decoration time, functional rooms of different types, and indoor formaldehyde and TVOC pollution levels to further analyse their patterns and propose control measures for improving indoor air quality. Interior decoration pollution can be categorized into organic, inorganic and radioactive pollution. The detection rate of formaldehyde and TVOC in the tested air samples is 100%. The average values of indoor formaldehyde concentration with decoration periods of 3, 3-12 and 12 months are 0.21, 0.11, and 0.04 mg/m^sup 3^ respectively, whereas those of TVOC concentration are 0.92, 0.49 and 0.21 mg/m^sup 3^ respectively. Formaldehyde and TVOC concentrations decrease as decoration time increases. The highest average concentrations of formaldehyde and TVOC, maximum over-standard multiples and over-standard rates are observed during the decoration time of 3 months. One year after decorating, formaldehyde content decreases to a value lower than the national standard limit, indoor air quality improves, and the over-standard rate of TVOC concentration significantly decreases compared with that of formaldehyde. The contents of formaldehyde and TVOC in the children's room are significantly higher than those in the master bedroom, second bedroom and living room. The results of this research exhibit a great reference value for further improving the pollution characteristics database of typical indoor air pollution indicators (formaldehyde and TVOC), enriching the pollution characteristics and regularity of indoor air formaldehyde and TVOC, understanding the current situation of indoor air pollution, and solving the problems of indoor air pollution. 
Environmental Studies--Pollution; Indoor air quality; Classification; Regularity; Environmental monitoring; Formaldehyde; Indicators; Data bases; Air pollution; Organic compounds; Indoor air pollution; Children; Environmental impact; Pollution detection; Air monitoring; Time measurement; Pollution monitoring; Indoor environments; Functional anatomy; Pollution levels; School districts; Volatile organic compounds--VOCs; Hydrocarbons; Investigations; Radioactive pollution; Pollutants; Databases; Quality standards; Air quality; Enrichment; Pollution indicators; Environmental health; Outdoor air quality; Decoration; Ventilation; Pollution sources; Bioindicators; Pollution; Elementary schools; Public buildings; Interior decoration; Beauty salons; P 0000:Air Pollution