ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Numerous attempts have been made to devise a structural formula representative of humic and fulvic acids11. Much of the difficulty may lie in the techniques used to isolate humus substances; these are often so severe (0.5 M NaOH extraction, concentrated HC1 precipitation, HC1/HF purification) as to ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/292526a0
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