title: Dependence of bioavailability of lead compounds in soils on the type and source of contamination (the example of Mexico City and mining area of Parral, Mexico)
metadata.name: dc.contributor.author
metadata.value: Sedov, Nikolay S.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Chernykh, Natalia A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Romero, Francisco
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kasatkin, Andrey V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Evdokimov, Sergey V.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2024-07-03T18:45:55Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2024-07-03T18:45:55Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2023-12
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Sedov, N. S., Chernykh, N. A., Romero, F., Kasatkin, A. V., Evdokimov, S. V. (2023). Dependence of bioavailability of lead compounds in soils on the type and source of contamination (the example of Mexico City and mining area of Parral, Mexico). Vestnik of Saint Petersburg University. Earth Sciences, 68 (4), 749–763. https://doi.org/10.21638/spbu07.2023.408 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2023.408
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/45663
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Evaluation and monitoring of soil contamination with heavy metals relies in most cases on
  their bulk concentrations whereas the risks of negative effects on human health depend upon
  the content of their bioavailable forms. The paper presents the study of the dependence of lead
  bioavailability in the surface soil horizons upon the contamination type and source. Two territories
  in Mexico with sharp difference of the source of pollution: Mexico City megapolis where
  the lead in soils originates from the ethyl gasoline burning and mining district in the south of
  Chihuahua State where the mine tailings are the source of the toxic elements including lead.
  Bulk lead concentrations were measured by the X-ray fluorescence method, bioavailability
  was estimated by the method imitating the effect of the stomach and intestine solutions. The
  research has shown that both in Mexico City (especially in its central part) and in the mining
  district in the Chihuahua State bulk lead concentrations are several times higher than the
  background values. The soils of the mining district have average bulk lead concentrations
  787.5 mg/kg and show the average bioavailability values 64 % whereas in the Mexico City
  megapolis average bulk concentrations of lead are lower — 324.7 mg/kg but bioavailability
  reaches 83 % and in some samples even 100 %. These results support the conclusion that despite
  lower bulk lead concentrations in Mexico City the risk of its negative effect on humans is higher than in the mining district polluted with the wastes of mining industry. The explanation
  of the observed tendency is that the chemical form of lead has a major influence on its
  bioavailability. Dependence of bioavailability upon the bulk concentrations within each study
  territory has not been established.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Earth Sciences;Volume 68; Issue 4
metadata.lang: -
metadata.name: dc.subject
metadata.value: bioavailability
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: bulk concentration
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: contamination
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: lead
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Mexico
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Dependence of bioavailability of lead compounds in soils on the type and source of contamination (the example of Mexico City and mining area of Parral, Mexico)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 131-145+Седов.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/45663/1/131-145%2b%d0%a1%d0%b5%d0%b4%d0%be%d0%b2.pdf
resources.format: Adobe PDF
resources.size: 1,4 MB