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Auteur Alexander, B. R. |
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Faire une suggestion Affiner la rechercheU.S. Geological survey water-supply paper, 2271. Pesticides in the nation's rivers 1975 -1980, and implications for furture momitoring / Gilliom, R. J.
Titre de série : U.S. Geological survey water-supply paper, 2271 Titre : Pesticides in the nation's rivers 1975 -1980, and implications for furture momitoring Type de document : texte imprimé Auteurs : Gilliom, R. J. ; Alexander, B. R. ; Smith, R. A. Mention d'édition : U.S Geological Survey, Federal Center Editeur : U.S Geological survey, Federal Center Année de publication : 1985 ISBN/ISSN/EAN : CI-04983 Note générale : The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use... Langues : Anglais (eng) Mots-clés : Pesticide Analyse chimique Insecticide Agriculture Chimie Hydrologie fluviale Rvière Index. décimale : 551.48 Hydrologie : Résumé : The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use... Note de contenu : The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use... U.S. Geological survey water-supply paper, 2271. Pesticides in the nation's rivers 1975 -1980, and implications for furture momitoring [texte imprimé] / Gilliom, R. J. ; Alexander, B. R. ; Smith, R. A. . - U.S Geological Survey, Federal Center . - U.S Geological survey, Federal Center, 1985.
ISSN : CI-04983
The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use...
Langues : Anglais (eng)
Mots-clés : Pesticide Analyse chimique Insecticide Agriculture Chimie Hydrologie fluviale Rvière Index. décimale : 551.48 Hydrologie : Résumé : The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use... Note de contenu : The paper is about water samples were taken four times per year and bed sediment samples two times per year dicring 1975-80 at 160 to 180 stations on major rivers of the United states. Samples were analyzed for 18 insecticides and 4 herbicides, which together accounted for about one third of the total amount of all pecticides applied to major crops during 1975-80. Fewer than 10 per cent of almost 3 000 water samples and fewer than 20 per cent of almost of any of the campounds. the patterns of detection result from a combination of widely variable detection capibilities, chemical properties, and use... Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B983.76962 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76961 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76960 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76959 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76958 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76957 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76956 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B983.76955 CI-04983 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible
Titre de série : United States Geological survey water supply paper, 2307 Titre : Analysis and interpretation of water-quality trends in major U.S rivers, 1974-1981 Type de document : texte imprimé Auteurs : Smith, A. R. ; Alexander, B. R. ; Gardon, W. M. Mention d'édition : USGPO Editeur : USGPO Année de publication : 1987 ISBN/ISSN/EAN : CI-04012 Note générale : Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes. Langues : Anglais (eng) Mots-clés : Qualité de l'eau Analyse de l'eau Hydrochimie Réseau hydrographique Hydraulique urbaine Index. décimale : 627 Génie hydraulique Résumé : Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes. Note de contenu : Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes. United States Geological survey water supply paper, 2307. Analysis and interpretation of water-quality trends in major U.S rivers, 1974-1981 [texte imprimé] / Smith, A. R. ; Alexander, B. R. ; Gardon, W. M. . - USGPO . - USGPO, 1987.
ISSN : CI-04012
Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes.
Langues : Anglais (eng)
Mots-clés : Qualité de l'eau Analyse de l'eau Hydrochimie Réseau hydrographique Hydraulique urbaine Index. décimale : 627 Génie hydraulique Résumé : Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes. Note de contenu : Water quality records from two nationwide sampling networks are now of sufficient length to permit nationally consist analysis of long-term water-quality trends at more than 300 locations on major US rivers. Particularly noteworthy are widespread decreases in lead and fecal bacteria concentrations and widespread increases in nitrate, arsenic, and cadmium concentrations. There is evident that atmospheric deposition of a variety of substances has played a surprisingly large role in water-quality changes. Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B012.67496 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67495 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67494 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67493 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67492 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67491 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67490 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B012.67489 CI-04012 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible
