Determination of black carbon in natural organic matter by chemical oxidation and solid-state 13C nuclear magnetic resonance spectroscopy

2004 ◽  
Vol 35 (8) ◽  
pp. 923-935 ◽  
Author(s):  
Myrna J. Simpson ◽  
Patrick G. Hatcher
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Organic Matter ◽  
Solid State ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Natural Organic Matter ◽  
Chemical Oxidation ◽  
Resonance Spectroscopy ◽  
13C Nuclear Magnetic Resonance

Selective, reductive dechlorination of chlorodeoxy sugars. Structural determination of chlorodeoxy and deoxy sugars by 13C nuclear magnetic resonance spectroscopy

1976 ◽  
Vol 54 (23) ◽  
pp. 3783-3793 ◽  
Author(s):  
Walter A. Szarek ◽  
Aleksander Zamojski ◽  
Alan R. Gibson ◽  
Dolatrai M. Vyas ◽  
J. K. N. Jones
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Reductive Dechlorination ◽  
Potassium Hydroxide ◽  
Resonance Spectroscopy ◽  
Structural Determination ◽  
13C Nuclear Magnetic Resonance ◽  
Reduced Products

The reductive dechlorination of chlorodeoxy sugars by hydrogenation over Raney nickel in the presence of potassium hydroxide or triethylamine has been investigated; a selective dechlorination was observed in most cases with triethylamine. Several new, chlorodeoxy furanoid derivatives have been synthesized by the use of triphenylphosphine–carbon tetrachloride. 13C magnetic resonance spectroscopy has been employed for the assignment of structure to the chlorodeoxy sugars and the corresponding reduced products.

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