Titre | Sample "integrity" - an evaluation of sample variability of soils around Rouyn-Noranda, Quebec |
Télécharger | Téléchargements |
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Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
Auteur | Knight, R D ;
Hernderson, P J |
Source | Commission géologique du Canada, Présentation scientifique 46, 2017, 1 feuille, https://doi.org/10.4095/299343 Accès ouvert |
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Année | 2017 |
Éditeur | Ressources naturelles Canada |
Réunion | 6th International Symposium on Environmental Geochemistry (ISEG); Edinburgh, Scotland; GB; Septembre 7-11, 2003 |
Document | publication en série |
Lang. | anglais |
DOI | https://doi.org/10.4095/299343 |
Media | en ligne; numérique |
Formats | pdf |
Province | Québec; Ontario |
SNRC | 31M/05; 31M/06; 31M/07; 31M/08; 31M/09; 31M/10; 31M/11; 31M/12; 31M/13; 31M/14; 31M/15; 31M/16; 31N/05; 31N/12; 31N/13; 32C/04; 32C/05; 32C/12; 32C/13; 32D; 32E/01; 32E/02; 32E/03; 32E/04; 32F/04; 41P/07;
41P/08; 41P/09; 41P/10; 41P/15; 41P/16; 42A/01; 42A/02; 42A/07; 42A/08; 42A/09; 42A/10; 42A/15; 42A/16; 42B/01; 42B/02 |
Région | Rouyn-Noranda; Lac Abitibi; Lake Duparquet; Lac Témiscamingue |
Lat/Long OENS | -80.7500 -77.5000 49.2500 47.2500 |
Sujets | preparation d'échantillons; échantillons de sol; acidité; cuivre; plomb; géochimie des métaux lourds; minéraux lourds; géochimie des minéraux lourds; contamination des métaux lourds; analyses des minéraux
lourds; fonderies; analyses géochimiques; géochimie du till; géochimie du sol; échantillons de sol; types pédologiques; études pédologiques; diamictites; géochimie; géologie de l'environnement; pédologie |
Illustrations | cartes de localisation; tableaux; photographies; photomicrographies; coupes transversales |
Programme | Division de la CGC du nord du Canada |
Programme | Les métaux dans l'environnement (MEDE) |
Diffusé | 2017 01 12 |
Résumé | (disponible en anglais seulement) A detailed soil sample collection grid was established 3 km southwest of the Horne smelter at Rouyn - Noranda, Quebec. The work supports interpretation of a
regional geochemical survey of humus and soil within 100 km radius of the smelter and was designed to determine geochemical variability at a site affected by smelter particulate deposition. Soils in the grid are luvisols formed on glacial lake silts
and clays and overly pillowed volcanic bedrock. Vegetation comprises small poplars and alders, with a fern ground cover; carbonized stumps and a thin layer of charcoal beneath humus indicate the site has been subject to fire. Litterfall, humus, and
B-horizon soil samples were collected at 10, 20, and 30m from the intersection of two perpendicular transects and at a point halfway between the 30m sample locations. Three samples of each were collected at the point of intersection. C-horizon soil
was collected at the intersection, the 30m sites, and halfway between the 30m sample locations In preparation for ICP-AES geochemical analyses, litterfall and humus samples were macerated, and all samples sieved to <2mm. The litterfall samples were
digested using perchloric acid, and all other samples using aqua-regia. The B- and C-horizon soil samples were analysed in duplicate. A total of 48 analyses were carried out. Geochemical variation among litterfall, B-horizon, and C-horizon
samples lies within the range of analytical variation, and trace metal concentrations (Cu, Pb, Zn, Ni, Cr) are 10s to 100s of ppm. For non-smelter-related elements, such as Ni, humus concentrations are equivalent to those of C-horizon soil. For Cr,
humus values are lower than those of C-horizon soil. In contrast, smelter-related elements, Cu, Pb, and Zn, have humus concentrations that are 1000's of ppm, and range within a variability of several 1000 ppm across the site. Humus geochemistry
reflects non-uniform distribution of metal-rich smelter particulate, and indicates that site variability is an important factor in mapping the distribution of smelter particulate and in modeling deposition. |
Sommaire | (Résumé en langage clair et simple, non publié) Afin de tester l'intégrité échantillon près d'une source ponctuelle, un site de collecte de l'échantillon du sol détaillé a été établi à
proximité de la fonderie Horne à Rouyn situé - Noranda, Québec. Nous concluons que l'humus reflète la distribution non uniforme de fonderie particules riche en métal, et indique que le site variabilité est un facteur important dans la cartographie
de la distribution des particules de la fonderie et dépôt de particules de modélisation. |
GEOSCAN ID | 299343 |
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