Sökning: (swepub) hsvcat:4 mspu:(chapter)
> (1990-1994) >
Dating of groundwat...
Dating of groundwaters by ¹⁴C-analysis of dissolved humic substances
-
- Pettersson, Catharina (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
-
- Allard, Bert (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
-
(creator_code:org_t)
- Berlin Heidleberg New York : Springer, 1991
- 1991
- Engelska.
-
Ingår i: Humic substances in the aquatic and terrestrial environment : proceedings of an international symposium, Linköping, Sweden, August 21-23, 1989. - Berlin Heidleberg New York : Springer. - 3540537023 ; , s. 135-141
- Relaterad länk:
-
http://libris.kb.se/...
-
visa fler...
-
http://www.worldcat....
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Fulvic acids of the DOC of five deep (139-409 m) groundwaters were recovered (adsorption on DEAE-cellulose) and used for age determination (14C determined by accelerator mass spectrometry), and compared with fulvic acids recovered from a shallow groundwater and a surface water. The composition of the seven different fulvic acids was similar, despite variations in hydrochemical conditions and residence times, indicating a high stability of this molecular weight fraction. The ages calculated from the 14C-content of the fulvic acid fraction (600 to 10000 y) are less than the ages indicated from analyses of the dissolved carbonate (data available for three sites). Using a fraction of the DOC with high stability (like the fulvic acid fraction) as a 14C-source when assessing the ages of subsurface waters, appears to be superior to using dissolved carbonate.
Ämnesord
- LANTBRUKSVETENSKAPER -- Annan lantbruksvetenskap -- Miljö- och naturvårdsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Other Agricultural Sciences -- Environmental Sciences related to Agriculture and Land-use (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Groundwater
Publikations- och innehållstyp
- ref (ämneskategori)
- kap (ämneskategori)
Hitta via bibliotek
Till lärosätets databas