收稿日期: 2017-01-05
网络出版日期: 2017-06-30
基金资助
国家自然科学基金资助项目(21277086)
Distribution characteristics of polychlorinated biphenyls in size-specific dust from air conditioner filters
Received date: 2017-01-05
Online published: 2017-06-30
多氯联苯(polychlorinated biphenyls, PCBs)是一类典型持久性有机污染物, 尽管已被禁止近50年, 但是这类污染物仍然能在环境中检出. 室内灰尘是PCBs人体暴露的重要来源之一. 空调滤网灰尘主要是沉积的室内空气颗粒物, 在一定程度上反映了室内污染状况. 以餐厅和实验室空调滤网灰尘为研究对象, 测定不同粒径空调滤网灰尘中PCBs的暴露水平, 分析灰尘性质对PCBs浓度的影响. 结果表明, PCBs总浓度在6.73~23.90 ng/g之间, 餐厅空调滤网灰尘中的PCBs浓度高于实验室. 灰尘样品与世界其他地区室内灰尘的污染水平相比处于较低水平. 由于样品中主要为低氯代PCBs, 因此工业品Aroclor1016, Aroclor1232或Aroclor1242可能是主要来源. PCBs浓度与灰尘平均粒径及有机质含量有显著的正相关关系, 与灰尘比表面积、总孔容、平均孔径、N/C原子比以及H/C原子比呈显著负相关, 说明灰尘性质本身对PCBs暴露有重要影响.
夏晓阳1, 税勇2, 黄宁宝1, 张晓岚1, 余应新1 . 不同粒径空调灰尘中的多氯联苯分布特征[J]. 上海大学学报(自然科学版), 2017 , 23(3) : 473 -482 . DOI: 10.12066/j.issn.1007-2861.1920
Polychlorinated biphenyls (PCBs) are a class of typical persistent organic pollutants. They are still detectable in the environmental though prohibited in the past
50 years. Indoor dust is an important source of human exposure to PCBs. Dust settled or adsorbed on air conditioner filters causes indoor particles, reflecting contamination of the indoor environment to some extent. In the present study, PCBs in dust of different sizes were collected from air conditioner filters in dining rooms and laboratories. The results show that the total amount of PCBs ranges from 6.73 to 23.90 ng/g dw. The PCB level in dining room dust is higher than that in laboratories. Compared with other regions worldwide, the present results are relatively low. Industrial products Aroclor1016, Aroclor1232, or Aroclor1242 may be main sources of PCBs because low chlorinated compounds dominate the totals. In addition, it has been found that significant correlation exists between the concentrations of PCBs and dust properties including particle sizes and organic contents. However, PCB concentrations are negatively correlated with surface area, total pore volume, average pore size, ratio of nitrogen to carbon (N/C), and ratio of hydrogen to carbon(H/C) in the dust. The results indicate that the dust properties have great influence on the concentrations of PCBs.
[1] Harrad S, Abdallah M A E, Oluseyi T. Polybrominated diphenyl ethers and polychlorinated biphenyls in dust from cars, homes, and offices in Lagos, Nigeria [J]. Chemosphere, 2016, 146: 346-353.
[2] Knobeloch L, Turyk M, Imm P, et al. Polychlorinated biphenyls in vacuum dust and blood of residents in 20 Wisconsin households [J]. Chemosphere, 2012, 86(7): 735-740.
[3] Liu X Y, Guo Z S, Krebs K A, et al. Laboratory study of PCB transport from primary sources to settled dust [J]. Chemosphere, 2016, 149: 62-69.
[4] Ni H G, Cao S P, Chang W J, et al. Incidence of polybrominated diphenyl ethers in central air conditioner filter dust from a new office building [J]. Environmental Pollution, 2011, 159(7):
1957-1962.
[5] Khan S, Cao Q, Lin A J, et al. Concentrations and bioaccessibility of polycyclic aromatic hydrocarbons in wastewater-irrigated soil using in vitro gastrointestinal test [J]. Environmental
Science and Pollution Research, 2008, 15(4): 344-353.
[6] Kang Y, Cheung K C, Cai Z W, et al. Chemical and bioanalytical characterization of dioxins in indoor dust in Hong Kong [J]. Ecotoxicology and Environmental Safety, 2011, 74(4): 947-952.
[7] Harrad S, Goosey E, Desborough J, et al. Dust from UK primary school classrooms and daycare centers: the significance of dust as a pathway of exposure of young UK children to brominated flame retardants and polychlorinated biphenyls [J]. Environmental Science & Technology, 2010, 44(11): 4198-4202.
[8] Hwang H M, Park E K, Young T M, et al. Occurrence of endocrine-disrupting chemicals in indoor dust [J]. Science of the Total Environment, 2008, 404(1): 26-35.
[9] Tan J, Cheng S M, Loganath A, et al. Selected organochlorine pesticide and polychlorinated biphenyl residues in house dust in Singapore [J]. Chemosphere, 2007, 68(9): 1675-1682.
[10] Wang W, Huang M J, Zheng J S, et al. Exposure assessment and distribution of polychlorinated biphenyls (PCBs) contained in indoor and outdoor dusts and the impacts of particle size and bioaccessibility [J]. Science of the Total Environment, 2013, 463: 1201-1209.
[11] Wang B L, Pang S T, Sun J P, et al. Levels of polychlorinated biphenyls in settled house dust from urban dwellings in China and their neurodevelopmental effects on preschool-aged
children [J]. Science of the Total Environment, 2015, 505: 402-408.
[12] Ali N, Van Den Eede N, Dirtu A C, et al. Assessment of human exposure to indoor organic contaminants via dust ingestion in Pakistan [J]. Indoor Air, 2012, 22(3): 200-211.
[13] Harrad S, Ibarra C, Robson M, et al. Polychlorinated biphenyls in domestic dust from Canada, New Zealand, United Kingdom and United States: implications for human exposure [J]. Chemosphere, 2009, 76(2): 232-238.
[14] Vorhees D J, Cullen A C, Altshul L M. Polychlorinated biphenyls in house dust and yard soil near a Superfund site [J]. Environmental Science & Technology, 1999, 33(13): 2151-2156.
[15] Abafe O A, Martincigh B S. Polybrominated diphenyl ethers and polychlorinated biphenyls in indoor dust in Durban, South Africa [J]. Indoor Air, 2015, 25(5): 547-556.
[16] Zheng J, Yan X, Chen S J, et al. Polychlorinated biphenyls in human hair at an e-waste site in China: composition profiles and chiral signatures in comparison to dust [J]. Environment
International, 2013, 54: 128-133.
[17] Kang Y, Yin Y, Man Y B, et al. Bioaccessibility of polychlorinated biphenyls in workplace dust and its implication for risk assessment [J]. Chemosphere, 2013, 93(6): 924-930.
[18] Alves C A, Pio C A, Duarte A C. Particulate size distributed organic: compounds in a forest atmosphere [J]. Environmental Science & Technology, 2000, 34(20): 4287-4293.
[19] Krauss M, Wilcke W. Persistent organic pollutants in soil density fractions: distribution and sorption strength [J]. Chemosphere, 2005, 59(10): 1507-1515.
[20] Wang C K, Li Y X, Liu J L, et al. Characteristics of PAHs adsorbed on street dust and the correlation with specific surface area and TOC [J]. Environmental Monitoring and Assessment, 2010, 169: 661-670.
[21] Klees M, Hiester E, Bruckmann P, et al. Polychlorinated biphenyls, polychlorinated dibenzop- dioxins and dibenzofurans in street dust of North Rhine-Westphalia, Germany [J]. Science of the Total Environment, 2015, 511: 72-81.
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