Contamination and source differentiation of Pb in park soils along an urban–rural gradient in Shanghai

Li, Hongbo; Yu, Shen; Li, Guilin; Deng, Hong; Luo, Xiao-San

doi:10.1016/j.envpol.2011.08.013

Cited by 96 publications

(35 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is better for children to receive an adequate amount of calcium in their diets, as calcium has been found to reduce the intestinal absorption of lead (Campbell and Osterhoudt, 2000;Gulson et al, 2001). Children at 9 years, though, did not frequently take potential lead-contained food, they showed a great prone of touching activity and frequent hand-to- mouth behavior to bite and suck objects, and did not routinely wash hands before eating, which would bring about potential lead contamination (Li et al, 2011;Yan et al, 2013), all of these behaviors resulted in the 9-year-old children being at the highest risk of exposure to lead. Based on the questionnaire survey, it was found that children at 10 years had less food (staple food and vegetables) for one day, compared to other groups with different ages (P b 0.05).…”

Section: Blood Lead Levels Of Children Living Around Coking Areamentioning

confidence: 99%

Isotopic ratio based source apportionment of children's blood lead around coking plant area

Cao

Duan

Zhao

et al. 2014

Environment International

View full text Add to dashboard Cite

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 ( 207 Pb/ 206 Pb and 208 Pb/ 206 Pb) 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) μg dL −1 , lower than the threshold in the current criteria of China defined by the US Centers for Disease Control (10 μg dL −1 ). The isotopic ratios in the blood were 2.111 ± 0.018 for 208 Pb/ 206 Pb and 0.864 ± 0.005 for 207 Pb/ 206 Pb, 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.

show abstract

Section: Blood Lead Levels Of Children Living Around Coking Areamentioning

confidence: 99%

Isotopic ratio based source apportionment of children's blood lead around coking plant area

Cao

Duan

Zhao

et al. 2014

Environment International

View full text Add to dashboard Cite

show abstract

“…While the well-known simple binary model allows the approximate contribution of two end-members (e.g. natural vs anthropogenic) to be calculated, more elaborated approaches such as the three-end-member model (Cheng et al, 2010;Li et al, 2011) have the potential to rank relevant anthropogenic Pb sources that further supports the development of strategies to reduce human health risks. However, it is well established that these models work satisfactorily only if the isotopic signatures of the end-members are significantly different (Etler et al, 2004;Monna et al, 1997).…”

Section: Lead Source Identificationmentioning

confidence: 99%

“…Although coal combustion is referred to as an important source of Pb in certain areas, (DiazSomoano et al, 2009;Li et al, 2011) it does not seem to be predominant in Lisbon, even though some industries located north from Lisbon use coal combustion (Vieira et al, 2006). Hereupon, Pb isotope ratios of Spanish and Portuguese coals ) are included in this study (Table 2).…”

Section: Potential Pb Sources and Tentative Source Apportionmentmentioning

confidence: 99%

“…This is based on the premise that Pb emitted into the atmosphere maintains a characteristic isotopic composition that does not change during the physical or physicochemical processes associated with anthropogenic activities (Ettler et al, 2004;Li et al, 2011). Based on the abundances of 206 Pb,207 Pb, and 208 Pb measured in the samples, contributions from major Pb sources (natural or anthropogenic) can be apportioned.…”

Section: Lead Source Identificationmentioning

confidence: 99%

“…Nonetheless, anthropogenic Ca in atmospheric aerosol samples from Lisbon has been attributed to cement production in Alhandra (Vieira et al, 2006), a city located 17 km northeast from Lisbon, which is in agreement with the results obtained by PCA (section 3.2) that suggest an anthropogenic origin for Ca-phases in the urban soils under investigation. Given that a variety of studies indicate cement as a probable source of Pb in different environmental media (Li et al, 2011;Tan et al, 2006), cement production was taken into consideration as a probable source in the tentative source apportionment used in this study.…”

Section: Potential Pb Sources and Tentative Source Apportionmentmentioning

confidence: 99%

See 2 more Smart Citations

Source and pathway analysis of lead and polycyclic aromatic hydrocarbons in Lisbon urban soils

Reis

Shepherd

Nowell

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

One hundred soil samples were collected from urban spaces, in Lisbon, Portugal, in two surveys that were carried out in consecutive years, to assess the potential adverse human health effects following exposure to potentially toxic elements and organic compounds in the urban soils. The study hereby described follows on from the earlier work of the authors and aims at performing a source-pathway-fate analysis of lead (Pb) and polycyclic aromatic hydrocarbons (PAHs) in the urban soils in order to increase current knowledge on factors influencing exposure of the population. Various techniques were combined to achieve the proposed goal. Geogenic and anthropogenic sources were apportioned by means of Pb isotope mixing models. Isotope data was further coupled with geographic information system mapping to assess local mixed sources of Pb and PAHs. Unleaded vehicle exhaust and cement production show the largest relative contribution to the total soil-Pb, but their respective importance depends on factors such as location and urban landscape. The primary sources of PAHs to the urban soils are probably air and land traffic. Multivariate analysis was used to investigate which soil properties could influence mobility and fate of the contaminants. Whilst principal components analysis indicates carbonates and other calcium phases as probable factors controlling the dispersion of Pb in the urban soils, the linear models obtained from stepwise multiple regression analysis show that soil phosphorous (P) and manganese (Mn) are good predictors of the total soil Pb content. No robust model was obtained for the PAHs, impeding identifying environmental factors most likely to influence their dispersion in the urban soils. The solid-phase distribution study provided critical information to untangle the, at a first glance, contradictory results obtained by the multivariate analysis. Carbonates and other calcium phases, having these a probable anthropogenic origin, are soil components containing major fractions of Pb, P, and Mn.

show abstract

Metals and possible sources of lead in aerosols at the Dinghushan nature reserve, southern China

Zhu

Kuang

et al. 2015

Rapid Comm Mass Spectrometry

View full text Add to dashboard Cite

show abstract

Contamination and source differentiation of Pb in park soils along an urban–rural gradient in Shanghai

Cited by 96 publications

References 47 publications

Isotopic ratio based source apportionment of children's blood lead around coking plant area

Isotopic ratio based source apportionment of children's blood lead around coking plant area

Source and pathway analysis of lead and polycyclic aromatic hydrocarbons in Lisbon urban soils

Metals and possible sources of lead in aerosols at the Dinghushan nature reserve, southern China

Contact Info

Product

Resources

About