Analysis Of Refit Indoor Main Gaseous Pollutant Concentration And Its Influencing Factors In Shenyang

Objective: 1.Understand the concentration levels of indoor gaseous pollutants in Shenyang by collecting data on the concentration of five gaseous pollutants radon,formaldehyde,benzene,ammonia,and total volatile organic compounds(TVOC)in 734 light-equipped or retrofitted indoor places in Shenyang in 2017;the influence of floor height,decoration materials,wall cabinet installation and furniture use on 5 kinds of gaseous pollutants provides a scientific basis for formulating prevention measures for indoor gaseous pollutants in Shenyang.Methods: 1.Use Microsoft Excel 2013 to summarize the data of 734 inspection sites in Shenyang in 2017,according to the geographical location,distance from the main road,floor height,use of wall materials,floor materials,ceiling materials,use of furniture,and install wall cabinets for classification and summary;2.Use SPSS25.0 to perform statistical analysis and draw charts on pollutant concentration levels and their influencing factors.Results: 1.The study is a cross-sectional study,which collected data on pollutant concentrations in 734 indoor places in 25 buildings in Shenyang in 2017,of which 581 were residential and 153 were office.The analysis of the test objects selected in this paper shows that the detection rate of each pollutant concentration in all sites is 100%,and the over-standard rate is 0%.2.The concentration levels of pollutants in indoor places of different functional types are different: the levels of radon,benzene,and TVOC in office places are higher than those in residences,and the formaldehyde concentration levels are lower than those in residences,and the differences are statistically significant(p <0.05).3.Analysis of indoor pollutant level in residential buildings: the distance from the main road,the height of the floor and the use of white can significantly affect the concentration level of radon in the house(β=-0.109;β=0.622;β=-0.182,p<0.05);using roof materials,using floor materials,the use of large white,and the placement of furniture can significantly affect the level of formaldehyde in the residence(β=-0.072;β=-0.088;β=0.361;β=0.496,p<0.05);the use of large white,tiles and furniture can significantly affect residential benzene concentration levels(β=0.189;β=0.191;β=0.595,p<0.05);within 1km from the main road,storey height and furniture placement can significantly affect residential ammonia concentration levels(β=0.168;β=-0.224;β=0.718,p<0.05);The distance from the main road and the placement of furniture can significantly affect the TVOC concentration level of the house(β=0.432;β=0.647,p<0.05).4.Analysis of indoor pollutant level in office: The floor height is high-rise,the use of large white,floor,floor rubber and marble can significantly affect the radon concentration level in the office(β=-0.820;β=-0.412;β=-0.472;β=-0.190;β=0.312,p<0.05);the use of ceiling materials,flooring,floor tiles,floor glue,wallpaper,installation of wall cabinets and furniture can significantly affect the formaldehyde concentration level in office places(β=-0.363;β=0.451;β=0.391;β=0.180;β=0.493;β=0.425;β=0.226,p<0.05);the distance from the main road,the use of aluminum-plastic panels,the installation of wall cabinets,the use of flooring,wallpaper,carpets and furniture placement can significantly affect the office Benzene concentration level at the site(β=0.050;β=0.479;β=0.589;β=0.509;β=0.650;β=0.474;β=0.432,p<0.05);distance from the main road,floor height,wall cabinets and furniture can significantly affect the ammonia concentration level in the office(β=0.167;β=0.172;β=0.175;β=0.445,p<0.05);the distance from the main road,the placement of furniture and carpets can significantly affect the TVOC in the office concentration level(β=0.132;β=0.358;β=0.714,p<0.05).Conclusion: 1.In 2017,the concentration of indoor air pollutants in the light-equipped and retrofitted Shenyang city was normal.2.Compared with the two types of indoor places,the scandium,benzene and TVOC in the office are more polluted,and the formaldehyde in the residence is more serious.3.The main factor influencing the level of radon in residential buildings is height,and the main factor influencing the levels of formaldehyde,benzene,ammonia and TVOC is furniture;the factors influencing the levels of radon,ammonia and TVOC in office spaces are height,furniture and carpets,and the main factor influencing the level of formaldehyde and benzene is the use of wallpaper.