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Children blood lead levels in urban and suburban areas of China and its influencing factors.

HAN Zhi-xuan1,2,3*, BI Xiang-yang4, GUO Xiang-yi3, LIAO Jian-guo3#br#   

  1. (1Key Laboratory of Geochemical Exploration, Ministry of Land and Resources, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, Hebei, China; 2United Nations Educational, Scientific and Cultural Organization, International Center on Globalscale Geochemistry, Langfang 065000, Hebei, China; 3School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China; 4 Faculty of Earth Science, China University of Geosciences (Wuhan), Wuhan 430074, China).
     
  • Online:2017-12-10 Published:2017-12-10

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Abstract: To know the change of blood lead levels (BLLs) of children living in urban and suburban areas and the associated factors, BLLs data of 166 cities of China, lead concentrations in soils of 23 cities and the annual mean PM10 of 25 provincial capital cities were collected in 1997-2010. The results showed the weighted mean of BLLs was 98.56 μg·L-1 on the data of 17 articles before 2000 and 69.61 μg·L-1 on the data of 149 articles during 2001-2010. BLLs rose from 1997 to 2000, but fall down in fluctuation since 2000 when Chinese government banned the use of leaded gasoline. On the whole, BLLs declined over time across different provinces, especially in Beijing and the like. BLLs were positively associated with soil lead concentration and PM10 concentration. Urban soil and atmospheric particulates may be the main exposure of lead for children.

Key words: Cinnamomum camphora leaf litter, monoterpenes., soil carbon and nitrogen cycle