Plant Wax n-Alkanes Trapped in Soil Humin by Noncovalent Bonds
نویسندگان
چکیده
منابع مشابه
Leaf-wax n-alkanes record the plant-water environment at leaf flush.
Leaf-wax n-alkanes (2)H/(1)H ratios are widely used as a proxy in climate reconstruction. Although the broad nature of the relationship between n-alkanes δ(2)H values and climate is appreciated, the quantitative details of the proxy remain elusive. To examine these details under natural environmental conditions, we studied a riparian broadleaf angiosperm species, Populus angustifolia, growing o...
متن کاملRapid analysis of C in plant-wax n-alkanes for reconstruction of terrestrial vegetation signals from aquatic sediments
[1] Long-chain, odd-carbon-numbered C25 to C35 n-alkanes are characteristic components of epicuticular waxes produced by terrestrial higher plants. They are delivered to aquatic systems via eolian and fluvial transport and are preserved in underlying sediments. The isotopic compositions of these products can serve as records of past vegetation. We have developed a rapid method for stable carbon...
متن کاملDegradation of long-chain n-alkanes in soil microcosms by two actinobacteria.
The ability of two recently isolated actinobacteria, that degrade medium and long chain n-alkanes in laboratory water medium, was investigated in soil microcosms using different standard soils that were artificially contaminated with n-alkanes of different length (C(12)- C(20)- C(24)- C(30)). The two strains, identified as Nocardia sp. SoB and Gordonia sp. SoCp, revealed a similar high HC degra...
متن کاملEpicuticular Wax Alkanes of Scutellaria Lateriflora L. Leaves
The dried aerial parts of scutellaria lateriflora L. (family Labiatae), have been used for many years as a domestic remedy for epilepsy, hysteria, and nervous tension states. Although several phytochemical investigations have been made regarding the constituents present in this species (i. e. flavonoids, iridoids), none has been recorded concerning the cuticular wax. Using thin-layer chroma...
متن کاملPlant and soil intake by organic broilers reared in tree- or grass-covered plots as determined by means of n-alkanes and of acid-insoluble ash.
Free-range birds such as organic broilers may ingest soil and plants during exploration. The estimation of such intakes is of great interest to quantify possible nutritional supplies and also to evaluate the risk of exposure to parasites or to environmental contaminants. Marker-based techniques are now available and would allow to quantify plant and, especially, soil intake in free-range birds,...
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ژورنال
عنوان ژورنال: Naturwissenschaften
سال: 1998
ISSN: 0028-1042,1432-1904
DOI: 10.1007/s001140050529