| Titre | The North American soil geochemical landscapes project -- 2010 US geological survey update |
| Télécharger | Téléchargement (publication entière) |
| |
| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Woodruff, L G |
| Source | Presentations and recommendations from the workshop on the role of geochemical data in environmental and human health risk assessment, Halifax, 2010; par Rencz, A N (éd.); Kettles, I M (éd.); Commission
géologique du Canada, Dossier public 6645, 2011 p. 24; 1 CD-ROM, https://doi.org/10.4095/287948  Accès ouvert |
| Liens | Canadian Database of Geochemical Surveys, downloadable files
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| Liens | Banque de données de levés géochimiques du Canada,
fichiers téléchargeables
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| Année | 2011 |
| Éditeur | Ressources naturelles Canada |
| Réunion | Workshop on the role of geochemical data in environmental and human health risk assessment; Halifax; CA; mars 17-18, 2010 |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/287948 |
| Media | CD-ROM; en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Presentations
and recommendations from the workshop on the role of geochemical data in environmental and human health risk assessment, Halifax, 2010 |
| Référence reliée | Cette publication est reliée à les publications suivantes |
| Formats | pdf |
| Lat/Long OENS | -125.0000 -65.0000 49.0000 25.0000 |
| Sujets | analyse environnementales; etudes de l'environnement; effets sur l'environnement; géochimie du sol; sols; études pédologiques; échantillons de sol; propriétés du sol; contamination des métaux lourds;
pollution; substances polluantes; biogéochimie; levés biochimiques; dépôts glaciaires; tills; levés géochimiques; Santé humaine; géochimie; pédologie; géologie des dépôts meubles/géomorphologie; géologie de l'environnement; Santé et sécurité;
Cénozoïque; Quaternaire |
| Programme | Géosciences environnementales |
| Diffusé | 2011 01 01 |
| Résumé | (disponible en anglais seulement)
A detailed knowledge of the concentration of chemicals in soil is required for calculation of human exposure to those chemicals via a soil pathway. At present,
agencies involved with human and environmental health have no common understanding of soil geochemical background variation for North America and the processes that control this variation. The North American Soil Geochemical Landscapes Project, a
tri-national initiative among the United States, Canada, and Mexico, was established to (1) develop a continental-scale design and protocols for generating soil geochemical data and (2) provide baseline soil geochemical data that are useful for a
wide range of applications and disciplines, including public health. The Project is based on low-density sample collection over a spatially balanced array of 13,496 sites for the continent (1 sample site per 1,600 sq. km.). The core samples collected
at each site include material from a depth of 0-5 cm and soils from the A and C horizons. In the US each sample is analyzed for more than 40 elements and mineralogy. Through partnerships with other federal agencies new data on the distribution of
soil bacteria and microbial biomass are being generated.
Preliminary results indicate that concentrations of potentially toxic elements in soils commonly vary by 1-2 orders of magnitude. The observed variability is the result of several parameters
such as soil parent material, climate, and human activities. Understanding this variation is critical in terms of understanding human exposure and for understanding soil pollution on a national scale. The USGS is committed to the completion of sample
collection in the conterminous United States by the end of 2010 field season. |
| GEOSCAN ID | 287948 |
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