Natural and anthropogenic lead in soils and vegetables around Guiyang city, southwest China: A Pb isotopic approach

Li, Feili; Liu, Cong‐Qiang; Yang, Yuangen; Bi, Xiangyang; Liu, Tao-Ze; Zhao, Zhi‐Qi

doi:10.1016/j.scitotenv.2012.05.040

Cited by 80 publications

(16 citation statements)

References 48 publications

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“…However, the rank relationship for lead isotopic abundances among biological samples nearly disappeared in the high-dose group. Another Pb isotopic approach described that the 207 Pb/ 206 Pb and 208 Pb/ 206 Pb ratios in vegetables increased in the order of roots < stems < leaves < fruits [26]. In addition, it has been already observed that the isotopic compositions of elements in different biological samples exhibited an increasing trend [17], [27]–[28], such as the δ 30 Si values for different organs of rice (stem < root < leaf < husk <grain) and the δ 13 C values for different tissues of gerbil (fat < liver < muscle < brain < hair).…”

Section: Discussionmentioning

confidence: 99%

Variations in Lead Isotopic Abundances in Sprague-Dawley Rat Tissues: Possible Reason of Formation

Liu

Ouyang

et al. 2014

PLoS ONE

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It has been reported in previous research that the lead isotopic composition of blood, urine and feces samples statistically differed from the given lead sources in Sprague-Dawley (SD) rats. However, the reason for this phenomenon is still unclear. An animal experiment was performed to investigate the lead isotope fractionation in diverse biological samples (i.e., lungs, liver, kidneys, bone) and to explore the possible reasons. SD rats were intratracheally instilled with lead acetate at the concentrations of 0, 0.02, 0.2, and 2 mg/kg body weight. Biological samples were collected for lead isotope analysis using an inductively coupled plasma mass spectrometry (ICP-MS). Significant differences are observed in lead isotope abundances among the diverse biological samples. The lead isotope abundances (206Pb, 207Pb and 208Pb) in diverse biological samples show different degrees and directions of departure from the given lead source. The results suggest that differences in enrichment or depletion capacity for each lead isotope in the various tissues might lead to the variation in lead isotopic abundances in tissues. Moreover, a nonlinear relationship between the blood lead level and the lead isotope abundances in liver and bone is observed. When the whole-blood level is higher than 50 ng/mL, the lead isotopic compositions of biological samples tend to be the same. Thus, the data support the speculation of a fractionation functional threshold.

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Section: Discussionmentioning

confidence: 99%

Variations in Lead Isotopic Abundances in Sprague-Dawley Rat Tissues: Possible Reason of Formation

Liu

Ouyang

et al. 2014

PLoS ONE

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“…In order to control the contamination of marine sediments and protect marine biological resources, China, USA, Canada, and other countries have established the standard of marine sediment quality for heavy metals [29,30]. Meanwhile, various methods have been applied to assess the contamination and ecorisk of heavy metals in sediments, including enrichment factor [31,32], index of geoaccumulation [33,34], toxic units and toxic risk index [35], and potential ecorisk index [22,36]. However, each method has its limitation or specialization, and thus it is necessary to use multiple methods in order to accurately obtain the contamination and ecorisk states of heavy metals in sediments [11,15].…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution and Contamination Assessment of Heavy Metals in Surface Sediments of the Caofeidian Adjacent Sea after the Land Reclamation, Bohai Bay

Zhu

Bing

Huang

et al. 2018

Journal of Chemistry

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Land reclamation can significantly influence spatial distribution of heavy metals in inshore sediments. In this study, the distribution and contamination of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) in inshore sediments of Bohai Bay were investigated after the land reclamation of Caofeidian. The results showed that the concentrations of Cd, Cr, Cu, Ni, Pb, and Zn in the sediments were 0. 20-0.65, 27.16-115.70, 11.14-39.00, 17.37-65.90, 15.08-24.06, and 41.64-139.56 mg/kg, respectively. These metal concentrations were generally higher in the area of Caofeidian than in other Chinese bays and estuaries. Spatially, the concentrations of Cd, Cr, Cu, Ni, and Zn were markedly lower in the sediments close to Caofeidian compared with other regions, whereas the concentrations of Pb showed an opposite case. Hydrodynamic conditions after the land reclamation were the major factor influencing the distribution of heavy metals in the sediments. Grain sizes dominated the distribution of Cu and Zn, and organic matters and Fe/Mn oxides/hydroxides also determined the distribution of the heavy metals. Multiple contamination indices showed that the inshore sediments were moderately to highly contaminated by Cd and slightly contaminated by other heavy metals. Similarly, Cd showed a high potential ecorisk in the sediments, and other metals were in the low level. Chromium contributed to higher exposure toxicity than other metals by the toxicity unit and toxic risk index. The results of this study indicate that after the land reclamation of Caofeidian the contamination and ecorisk of heavy metals in the sediments markedly decreased in the stronger hydrodynamic areas.

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“…On the basis of the lead content and the isotope ratio in B. davidii specimens collected from two abandoned Pb/Zn mining areas in Spain, it was concluded that the areas studied can become an important source of contamination of the vegetation Li et al 2012) growing in these areas. Namely, it was found that the lead accumulation in plants is primarily derived from the mining operations rather than from other lead sources such as leaded-petrol emissions (Marguí et al 2006).…”

Section: Isotopic Composition In Plant Biomonitoring Of Lead Air Pollmentioning

confidence: 97%

Pollutant Diseases, Remediation and Recycling

2013

Environmental Chemistry for a Sustainable World

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Natural and anthropogenic lead in soils and vegetables around Guiyang city, southwest China: A Pb isotopic approach

Cited by 80 publications

References 48 publications

Variations in Lead Isotopic Abundances in Sprague-Dawley Rat Tissues: Possible Reason of Formation

Variations in Lead Isotopic Abundances in Sprague-Dawley Rat Tissues: Possible Reason of Formation

Spatial Distribution and Contamination Assessment of Heavy Metals in Surface Sediments of the Caofeidian Adjacent Sea after the Land Reclamation, Bohai Bay

Pollutant Diseases, Remediation and Recycling

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