Dissolved Organic Carbon Reference Material Program
نویسندگان
چکیده
منابع مشابه
Temperature Dependence of Photodegradation of Dissolved Organic Matter to Dissolved Inorganic Carbon and Particulate Organic Carbon
Photochemical transformation of dissolved organic matter (DOM) has been studied for more than two decades. Usually, laboratory or "in-situ" experiments are used to determine photodegradation variables. A common problem with these experiments is that the photodegradation experiments are done at higher than ambient temperature. Five laboratory experiments were done to determine the effect of temp...
متن کاملRemoval of assimilable organic carbon and biodegradable dissolved organic carbon by reverse osmosis and nanofiltration membranes
The main objective of this study was to evaluate the effectiveness of reverse osmosis (RO) and nanofiltration (NF), under various solution chemistries, on bacterial regrowth potential as quantified by assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC). The bench-scale experiments, using tap groundwater spiked with acetate as organic carbon, revealed that AOC remo...
متن کاملLatitudinal Gradients in Degradation of Marine Dissolved Organic Carbon
Heterotrophic microbial communities cycle nearly half of net primary productivity in the ocean, and play a particularly important role in transformations of dissolved organic carbon (DOC). The specific means by which these communities mediate the transformations of organic carbon are largely unknown, since the vast majority of marine bacteria have not been isolated in culture, and most measurem...
متن کاملCharacteristics and Reactivity of Algae-Produced Dissolved Organic Carbon
Algae green, blue–green, and diatom grown in inorganic media produced particulate and dissolved organic carbon DOC . DOC produced by a green-alga contains 25% hydrophobic acids. DOC from all algae had specific ultraviolet absorbance values less than 2.0 m−1 mg/L −1. Algae-produced DOC was biologically labile; greater than 60% degraded in bioreactors within 5 days. The biodegradable material lik...
متن کاملCarbon isotopic characterisation of dissolved organic matter during water treatment.
Water treatment is a series of physio-chemical processes to aid organic matter (OM) removal, which helps to minimise the formation of potentially carcinogenic disinfection by-products and microbial regrowth. Changes in OM character through the treatment processes can provide insight into the treatment efficiency, but radiogenic isotopic characterisation techniques have yet to be applied. Here, ...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2005
ISSN: 0096-3941
DOI: 10.1029/2005eo350003