scholarly journals Association of fresh low-molecular-weight organic compounds with clay-sized mineral fraction in soils of different organic carbon loading

Geoderma ◽  
2022 ◽  
Vol 409 ◽  
pp. 115657
Author(s):  
Tianyi Wu ◽  
Alexander D. Ost ◽  
Jean-Nicolas Audinot ◽  
Martin Wiesmeier ◽  
Tom Wirtz ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Organic Carbon ◽  
Organic Compounds ◽  
Low Molecular Weight ◽  
Mineral Fraction ◽  
Organic Carbon Loading ◽  
Carbon Loading

EFFECT OF ORGANIC CARBON LOADING (OCL) ON SIMULTANEOUS NH4+-N AND Mn2+ REMOVAL IN DRINKING WATER USING A BAF SYSTEM

2011 ◽  
Vol 10 (11) ◽  
pp. 1733-1742 ◽  
Author(s):  
Hassimi Abu Hasan ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Siti Kartom Kamarudin ◽  
Noorhisham Tan Kofli
Keyword(s):  
Drinking Water ◽  
Organic Carbon ◽  
Organic Carbon Loading ◽  
Carbon Loading

Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog

Tellus B ◽  
1992 ◽  
Vol 44 (5) ◽  
pp. 533-544 ◽  
Author(s):  
M. C. Facchini ◽  
S. Fuzzi ◽  
J. A. Lind ◽  
H. Fierlinger-Oberlinninger ◽  
M. Kalina ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Organic Compounds ◽  
Chemical Reactions ◽  
Low Molecular Weight ◽  
Phase Partitioning

scholarly journals Evaluation of a 2-step thermal method for separating organic and elemental carbon for radiocarbon analysis

2014 ◽  
Vol 7 (1) ◽  
pp. 131-169 ◽  
Author(s):  
U. Dusek ◽  
M. Monaco ◽  
M. Prokopiou ◽  
F. Gongriep ◽  
R. Hitzenberger ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Humic Acid ◽  
Organic Carbon ◽  
Organic Compounds ◽  
Strong Evidence ◽  
Elemental Carbon ◽  
Intermediate Temperature ◽  
Thermal Method ◽  
Intermediate Step ◽  
Temperature Step

Abstract. We thoroughly characterized a system for thermal separation of organic carbon (OC) and elemental carbon (EC) for subsequent radiocarbon analysis. Different organic compounds as well as ambient aerosol filter samples were introduced into an oven system and combusted to CO2 in pure O2. The main objective was to test which combustion times and temperatures are best suited to separate OC and EC. The final separation step for OC was combustion at 360 °C for 15 min. Combustion at this temperature proved enough to remove several organic test substances from the filter (including high molecular weight humic acid) but did not remove substantial amounts of EC. For isolation of EC, OC first needs to be completely removed from the filter. This was achieved by water extraction of the filter, followed by combustion of the water insoluble OC at 360 °C and combustion at an intermediate temperature step of 2 min at 450 °C. This last step removed the most refractory OC together with some EC. Finally, the remaining EC was combusted to CO2 at 650 °C. The recovery of black carbon after the intermediate 450 °C step was approximately 80%. Several tests provided strong evidence that OC was removed efficiently during the intermediate temperature step: (i) brown carbon, indicative of refractory OC, was removed; (ii) the fraction modern of EC did not decrease significantly if the temperature of the intermediate step was further increased. Based on tests with various organic compounds, we estimated that charred organic carbon could contribute 4–8% to an elemental carbon sample that was isolated according to our method.

Structural influences of low-molecular-weight dissolved organic carbon mimics on the photolytic fate of atrazine

1998 ◽  
Vol 17 (6) ◽  
pp. 975-981 ◽  
Author(s):  
Cathleen J. Hapeman ◽  
Susanna Bilboulian ◽  
Brent G. Anderson ◽  
Alba Torrents
Keyword(s):  
Molecular Weight ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Low Molecular Weight
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