Phthalate exposure and health risks from dust in university dormitories in Changchun City
The endocrine disruptor phthalic acid esters(PAEs)are widespread in the indoor environment.As a complex environmental carrier,indoor dust is a source and sink of many pollutants,and PAEs adsorbed in indoor dust particles may pose potential health risks.In order to supplement the pollution information of PAEs in indoor dust in Northeast China and to explore the pollution characteristics and risk levels of PAEs,107 winter dust samples and 20 summer samples were collected from university dormitories in Changchun.The levels of PAEs in the dust were analyzed,and the distribution characteristics,influencing factors,potential sources,and health risks of PAEs were further investigated.The results showed that in winter,the concentrations of PAEs in dormitory dust ranged from 141.94 μg·g-1 to 1561.06 μg·g-1,with bis(2-ethylhexyl)phthalate(DEHP)being the most dominant PAEs pollutant with an average contribution of 73.62%.The time of renovation,personal factors,and seasonal changes all affected the levels of PAEs in the dormitories,in which the levels of PAEs in dust in the newly renovated dormitories were significantly higher than those in the old dormitories,the concentrations of PAEs in dust in the female dormitories were significantly higher than those in the male dormitories,and the concentrations of PAEs in the dust in the paired winter months were higher than those in the summer months.The main sources of PAEs in dormitory dust may be personal care products,plastic products,and textiles.The noncarcinogenic risk of PAEs was less than 1,which is within the acceptable range,and the ingestion route was the main route of exposure to PAEs.For carcinogenic PAEs,the carcinogenic risk of benzyl butyl phthalate(BBP)and DEHP was low,and the carcinogenic risk of DEHP was significantly higher than that of BBP.
NETL
NSTL
万方数据
