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Isotopic ratio based source apportionment of children's blood lead around coking plant area
Abstract Lead exposure in the environment is a major hazard affecting human health, particularly for children. The blood lead levels in the local children living around the largest coking area in China were measured, and the source of blood lead and the main pathways of lead exposure were investigated based on lead isotopic ratios (207Pb/206Pb and 208Pb/206Pb) in blood and in a variety of media, including food, airborne particulate matter, soil, dust and drinking water. The children's blood lead level was 5.25 (1.59 to 34.36 as range) μgdL−1, lower than the threshold in the current criteria of China defined by the US Centers for Disease Control (10μgdL−1). The isotopic ratios in the blood were 2.111±0.018 for 208Pb/206Pb and 0.864±0.005 for 207Pb/206Pb, similar to those of vegetables, wheat, drinking water, airborne particulate matter, but different from those of vehicle emission and soil/dust, suggesting that the formers were the main pathway of lead exposure among the children. The exposure pathway analysis based on the isotopic ratios and the human health risk assessment showed that dietary intake of food and drinking water contributed 93.67% of total exposed lead. The study further indicated that the coal used in the coking plant is the dominant pollution source of lead in children's blood.
Graphical abstract The figure shows the 208Pb/206Pb versus 207Pb/206Pb ratios in the children's blood, environmental media, coal combustion fly ash and coal. The lead isotope ratios in the children's blood exhibited little variation, with some exceptions. Most of the points were contained in the scope of lead isotope ratios of coal and coal combustion fly ash from Shanxi Province. Display Omitted
Highlights Lead content and isotope ratios in the blood and environmental media were studied. Children's BLL was 5.25μgdL−1, lower than those living in other industrial areas. Isotopic ratios in the blood were similar to those of food, drinking water and PM. Coal combustion fly ash from coking is the main source of children's lead exposure. The contribution to children's lead exposure via food and water ingestion was 94%.
Isotopic ratio based source apportionment of children's blood lead around coking plant area
Abstract Lead exposure in the environment is a major hazard affecting human health, particularly for children. The blood lead levels in the local children living around the largest coking area in China were measured, and the source of blood lead and the main pathways of lead exposure were investigated based on lead isotopic ratios (207Pb/206Pb and 208Pb/206Pb) in blood and in a variety of media, including food, airborne particulate matter, soil, dust and drinking water. The children's blood lead level was 5.25 (1.59 to 34.36 as range) μgdL−1, lower than the threshold in the current criteria of China defined by the US Centers for Disease Control (10μgdL−1). The isotopic ratios in the blood were 2.111±0.018 for 208Pb/206Pb and 0.864±0.005 for 207Pb/206Pb, similar to those of vegetables, wheat, drinking water, airborne particulate matter, but different from those of vehicle emission and soil/dust, suggesting that the formers were the main pathway of lead exposure among the children. The exposure pathway analysis based on the isotopic ratios and the human health risk assessment showed that dietary intake of food and drinking water contributed 93.67% of total exposed lead. The study further indicated that the coal used in the coking plant is the dominant pollution source of lead in children's blood.
Graphical abstract The figure shows the 208Pb/206Pb versus 207Pb/206Pb ratios in the children's blood, environmental media, coal combustion fly ash and coal. The lead isotope ratios in the children's blood exhibited little variation, with some exceptions. Most of the points were contained in the scope of lead isotope ratios of coal and coal combustion fly ash from Shanxi Province. Display Omitted
Highlights Lead content and isotope ratios in the blood and environmental media were studied. Children's BLL was 5.25μgdL−1, lower than those living in other industrial areas. Isotopic ratios in the blood were similar to those of food, drinking water and PM. Coal combustion fly ash from coking is the main source of children's lead exposure. The contribution to children's lead exposure via food and water ingestion was 94%.
Isotopic ratio based source apportionment of children's blood lead around coking plant area
Cao, Suzhen (author) / Duan, Xiaoli (author) / Zhao, Xiuge (author) / Wang, Beibei (author) / Ma, Jin (author) / Fan, Delong (author) / Sun, Chengye (author) / He, Bin (author) / Wei, Fusheng (author) / Jiang, Guibin (author)
Environmental International ; 73 ; 158-166
2014-07-09
9 pages
Article (Journal)
Electronic Resource
English
Isotopic ratio based source apportionment of children's blood lead around coking plant area
| Online Contents | 2014
Isotopic ratio based source apportionment of children's blood lead around coking plant area
| DOAJ | 2014