Emission Characteristics And Health Risk Analysis Of VOCs In Architectural Decoration In Xi’an

XI’an is an important city in Northwest China,with the development of urbanization and the increase of demand for new housing,decorative building materials market industry will have a broad market space and the resulting VOCS pollution should not be neglected.In this paper,the construction of decoration decoration in Xi’an was established for the first time.The emission characteristics of VOCs in Xi’an were mainly constructed,and the characteristics of VOCs,including source characteristics,temporal and spatial distribution characteristics and health risks were analyzed.First of all,identify pollution sources for building decoration.Building decoration pollution mainly from the use of organic solvents(coatings,adhesives),including architectural wall coatings,wood coatings,wood-based panel adhesives,furniture surface coating,fabric coating,and architectural coatings,Glue,and so on.Determine the level of activities of various types of emission sources for the construction of VOCs in Xi’an.First of all,the building decoration pollution sources to identifyUsing the "emission factor method",according to the basic data,access to 2010-2014,Xi’an decoration VOCs emissions list.The results show that the total emissions of VOCs in Xi’an from 2010 to 2014 are 1653.4t,3216.9t,2451.1t,2557.9t and 2947.8t respectively.Firstly,the source emission characteristics and time characteristics of volatile organic compounds in Xi’an were analyzed,and the emission of VOCs for architectural wall coatings,wood coatings,building adhesives,sheet adhesives,wood furniture and metal furniture were obtained.And then analyzed the emissions of VOCs from the building decoration of Weiyang,Yanta,Zhouzhi,Lianhu,Baqiao,Yanliang,Lintong,Lantian,Huxian,Xincheng and Beilin,Get the contribution rate of each district.The results show that the emissions of each emission source show an increasing trend over time in 2010-2014,and there is a small peak in 2011.The emission distribution of VOCs in Xi’an is not the same,the emission of VOCs in Beilin is the largest,Lianhu,Xincheng,Gaoling,Weiyang,followed.The remaining regional voc emissions are relatively small.The uncertainty of the VOCs emission inventory is mainly due to the lack of activity level data and the lack of localized emission factor information.According to the three factors of building decoration pollution,human exposure risk and environmental management,the health risk tree is established.The fault tree and its successful tree are qualitatively analyzed.The minimum cut set and diameter set are obtained.Then the fuzzy theory is introduced into the fault tree to quantify Analysis,heaith accident probability is 0.232.Combined with the health loss in 2014 to compare the various districts of Xi’an pollution risk,and put forward risk management measures.