The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy

Details The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45.1743w&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 45, Issue 10, pp.1743-1750

Physics

2

Scientific paper

Freshwater humic substances from Lake Celyn, Gwynedd, N. Wales have been investigated by 13 C-NMR spectroscopy. Carboxyl, aromatic, o -alkyl and alkyl resonances can be recognised. Varying pulse delay from 0.43 s to 2.5 sec has little effect on the magnitude of the signal ascribed to aromatic carbon, but there is a small nuclear Overhauser effect (1.45 at a pulse delay of 0.8 sec). The results show-that 24% of the Lake Celyn humic acid carbon is carboxyl and 40% is aromatic. The high proportion of aromatic carbon suggests the Lake Celyn humic acid is largely formed from terrestrial humic substances from the surrounding peaty watershed.

Affiliated with

Also associated with

No associations

Rating

The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The structure of freshwater humic substances as revealed by 13 C-NMR spectroscopy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1469171