住宅室内降尘中邻苯二甲酸酯的污染特征及传输途径
Characterization of phthalates in residential house dust and their transfer routes
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摘要: 本文分别于夏季和冬季在北京市40户家庭的客厅和卧室采集降尘样品,研究降尘中邻苯二甲酸酯(PAEs)的污染特征.结果表明,室内降尘中主要的PAEs(及其浓度)为DIBP(39.6 ng·mg-1,几何平均浓度,下同)、DBP(38.7 ng·mg-1)和DEHP(418.5 ng·mg-1).降尘中PAEs的浓度与温度、相对湿度和换气次数均呈显著正相关(P<0.005).这是由于室温升高和换气次数增高加快PAEs的源排放速率,促进室内空气中PAEs积累并通过气相媒介传输使得降尘PAEs浓度增高;湿度升高促进空气中PAEs向降尘的传质,增大降尘中PAEs浓度.3种因素共同影响使得夏季降尘中3种PAEs的浓度均显著高于冬季(P<0.0001).研究还发现,源材料中PAEs至降尘的传输途径包括以气相为媒介的间接传输和源至降尘的直接转移,因此降尘PAEs浓度与采集平面材料相关;降尘PAEs浓度还受降尘在室内的停留时间影响.因此,相关研究需指明降尘的类型、采集位置和平面材料,便于利用测量数据进行准确的暴露评估.Abstract: House dust samples were collected in the living room and bedroom of forty residences in Beijing in both summer and winter. The concentrations of 7 phthalates in these samples were characterized. The results showed that the major phthalates in house dust were DIBP (39.6 ng·mg-1, geometric mean concentration, thereafter), DBP (38.7 ng·mg-1) and DEHP (418.5 ng·mg-1). The concentrations of dust-borne DIBP, DBP and DEHP were positively associated with temperature, relative humidity and ventilation rate (P<0.005). Elevated temperature and improved ventilation could accelerate the source emission rates of phthalates, resulting in the accumulation of airborne phthalates, and ultimately increase the concentration of dust-borne phthalates through the air-mediated transfer; whereas higher humidity could expedite the mass transfer of phthalates from air to dust, leading to the higher concentration of dust-borne phthalates. Due to the combined effects of above factors, significantly higher concentrations of dust-borne phthalates were found in the summer (P<0.0001). The results also suggested that phthalates transport from source materials to house dust via two routes:air-mediated indirect transfer and direct transfer from source to dust on source surface. As a result, the concentrations of dust-borne phthalates were closely associated with surface material. The residence time of dust was also found to impact the concentrations of dust-borne phthalates. Therefore, it is necessary to specify the type of dust, collection location and surface material, so that accurate exposure assessment can be conducted using measurement data.
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Key words:
- phthalates /
- house dust /
- DEHP /
- DIBP /
- DBP
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[1] ABB M, HEINRICH T, SORKAU E, et al. Phthalates in house dust[J]. Environment International, 2009, 35(6):965-970. [2] HEUDORF U, MERSCH-SUNDERMANN V, ANGERER J. Phthalates:Toxicology and exposure[J]. International Journal of Hygiene and Environmental Health, 2007, 210(5):623-634. [3] GUO Y, WU Q. Phthalate metabolites in urine China, and implications for human exposures[J]. Environment International, 2011, 37(5):893-898. [4] GUO Y, KANNAN K. Comparative assessment of human exposure to phthalate esters from house dust in China and the United States[J]. Environmental Science and Technology, 2011, 45(8):3788-3794. [5] 王夫美,陈丽,焦姣,等. 住宅室内降尘中邻苯二甲酸酯污染特征及暴露评价[J]. 中国环境科学,2012,32(5):780-786. WANG F M, CHEN L, JIAO J, et al. Pollution characteristics of phthalate esters derived from household dust and exposure assessment[J]. China Environmental Science, 2012, 32(5):780-786(in Chinese).
[6] PEI X Q, GUO M, MO F F, et al. Concentration and risk assessment of phthalates present in indoor air from newly decorated apartments[J]. Atmospheric Environment, 2013, 68:17-23. [7] LI H L, SONG W W, ZHANG Z F, et al. Phthalates in dormitory and dust of northern Chinese cities:Occurrence, human exposure, and risk assessment[J]. Science of the Total Environment, 2016, 565:496-502. [8] 吕怡兵,付强,陈瑛. 环境中邻苯二甲酸酯类物质的污染现状与监测方法[J].中国环境监测,2007,23(5):66-70. LV Y B, FU Q, CHEN Y. Environmental pollution status of phthalates and monitoring methods[J]. Environmental Monitoring in China, 2007, 23(5):66-70(in Chinese).
[9] 张文娟,王利军,王丽,等. 西安城区地表灰尘中邻苯二甲酸酯分布、来源及人群暴露[J]. 环境科学,2016,37(10):3758-3765. ZHANG W J, WANG L J, WANG L, et al. Distribution, source and exposure of phthalates in surface dust in Xi'an City[J]. Environmental Science, 2016, 37(10):3758-3765(in Chinese).
[10] WORMUTH M, SCHERINGER M, VOLLENWEIDER M, et al. What are the sources of exposure to eight frequently used phthalic acid esters in Europeans[J]. Risk Analysis, 2006, 26(3):803-824. [11] BU Z M, ZHANG Y P, et al. Indoor phthalate concentration in residential apartments in Chongqing, China:Implications for preschool children's exposure and risk assessment[J]. Atmospheric Environment, 2016, 127:34-45. [12] LANGER S, WESCHLER C J, FISCHER A, et al. Phthalate and PAH concentrations in dust collected from Danish homes and daycare centers[J]. Atmospheric Environment, 2010, 44(19):2294-2301. [13] FROMME H, LAHRZ T, PILOTY M, et al. Occurrence of phthalates and musk fragrances in indoor air and dust from apartments and kindergartens in Berlin (Germany)[J]. Indoor Air, 2004, 14(3):188-195. [14] BOMEHAG C G, LUNDGREN B, WESCHLER C J, et al. Phthalates in indoor dust and their association with building characteristics[J]. Environmental Health Perspectives, 2005, 113(10):1399-1404. [15] KOLARIK B, BORNEHAG C G, NAYDENOV K. The concentrations of phthalates in settled dust in Bulgarian homes in relation to building characteristic and cleaning habits in the family[J]. Atmospheric Environment, 2008, 42(37):8553-8559. [16] KOCH H M, ROSSBACH B, DREXLER H, et al. Internal exposure of the general population to DEHP and other phthalates-determination of secondary and primary phthalate monoester metabolites in urine[J]. Environmental Research, 2003, 93(2):177-185. [17] MERCIER F, GLORENNEC P, THOMAS O, et al. Organic contamination of settled house dust, a review for exposure assessment purposes[J]. Environmental Science and Technology, 2011, 45(16):6716-6727. [18] WESCHLER C J, SALTHAMMER T, FROMME H. Partitioning of phthalates among the gas phase, airborne particles and settled dust in indoor environments[J]. Atmospheric Environment, 2008, 42(7):1449-1460. [19] SUKIENE V, VON G N, GERECKE A C, et al. Direct and air-mediated transfer of labeled SVOCs from indoor sources to dust[J]. Environmental Science and Technology, 2017, 51(6):3269-3277. [20] HUANG L H, ZHAO W P, LI M. Determinants on ambient PM2.5 infiltration in non-heating season for urban residences in Beijing:Building characteristics, interior surface coverings and human behavior[J]. Atmospheric Pollution Research, 2015, 6(6):1046-1054. [21] KASHYAP D, AGARWAL T. Concentration and factors affecting the distribution of phthalates in the air and dust:A global scenario[J]. Science of the Total Environment, 2018, 635:817-827. [22] WU W, ZHOU F, WANG Y, et al. Phthalate levels and related factors in children aged 6-12 years[J]. Environmental Pollution, 2017, 220(B):990-996. [23] WANG X, TAO W, XU Y, et al. Indoor phthalate concentration and exposure in residential and office buildings in Xi'an, China[J]. Atmospheric Environment, 2014, 87:146-152. [24] GASPAR F W, CASTORINA R, MADDALENA R L, et al. Phthalate exposure and risk assessment in California child care facilities[J]. Environmental Science and Technology, 2014, 48(13):7593-7601. [25] KIM H H, YANG J Y, KIM S D, et al. Health risks assessment in children for phthalate exposure associated with childcare facilities and indoor playgrounds[J]. Environmental Health and Toxicology, 2011, 26:1-9. [26] BLANCHARD O, GLORENNEC P, MERCIER F, et al. Semi volatile organic compounds in indoor air and settled dust in 30 French dwellings[J]. Environmental Science and Technology, 2014, 48(7):3959-3969. [27] 董夫银,闫杰. 欧盟及美国禁用邻苯二甲酸酯的法规及其出台始末[J].检验检疫科学,2006,15(3):78-80. DONG F Y, YAN J. The European Union and the United States to ban phthalates and its legislation[J]. Inspection and Quarantine Science, 2006, 15(3):78-80(in Chinese).
[28] 李亚华,鲁建江,尹晓文,等. 石河子市采暖季和非采暖季住宅中邻苯二甲酸酯的污染特征及婴幼儿健康风险评估[J]. 环境科学学报,2019,39(9):3154-3162. LI Y H, LU J J, YIN X W, et al. Pollution characteristics of phthalates in residences during heating and non-heating seasons and health risk assessment to infants and children in Shihezi[J]. Acta Scientiae Circumstantiae, 2019, 39(9):3154-3162(in Chinese).
[29] FUJII M, SHINOHARA A, LI M, et al. A study on emission of phthalate esters from plastic materials using a passive flux sampler[J]. Atmospheric Environment, 2003, 37(39-40):5495-5504. [30] CLAUSEN P A, LIU Z, SORENSEN V K, et al. Influence of temperature on the emission of Di-(2-ethylhexyl) phthalate (DEHP) from PVC flooring in the emission cell FLEC[J]. Environmental Science and Technology, 2012, 46(2):909-915. [31] CLAUSEN P A, XU Y, SORENSEN V K, et al. The influence of humidity on the emission of DEHP from vinyl flooring in the emission cell "FLEC"[J]. Atmospheric Environment, 2007, 41(15):3217-3224. [32] ODUM J R, YU J, KAMENS R M. Modeling the mass transfer of semi volatile organics in combustion aerosols[J]. Environmental Science and Technology, 1994, 28(13):2278-2285. [33] JANG M, KAMENS R M. A thermodynamic approach for modeling partitioning of semi-volatile organic compounds on atmospheric particulate matter:Humidity effects[J]. Environmental Science and Technology, 1998, 32(9):1237-1243. [34] XU Y, CONHEN HUBAL E, CLAUSEN P, et al. Predicting residential exposure to phthalate plasticizer emitted from vinyl flooring:A mechanistic analysis[J]. Environmental Science and Technology, 2009, 43(7):2374-2380. [35] LIU C, ZHANG Y, BENNING J L, et al. The effect of ventilation on indoor exposure to semivolatile organic compounds[J]. Indoor Air, 2015, 25(3):285-296. [36] CLAUSEN P A, LIU Z, XU Y, et al. Influence of air flow rate on emission of DEHP from vinyl flooring in the emission cell FLEC:Measurements and CFD simulation[J]. Atmospheric Environment, 2010, 44(13):2760-2766. [37] DODSON R E, CAMANN D E, MORELLO-FROSCH R, et al. Semi-volatile organic compounds in homes:Strategies for efficient and systematic exposure measurement based on empirical and theoretical factors[J]. Environmental Science and Technology, 2015, 49(1):113-122.
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