Amino-acids in humic, nitrohumic and nitrofuvic acids from coal

✍ Scribed by Rafael Moliner; Jose M. Gavilan

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 310 KB
• Volume: 60
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(81)90033-8

✦ Synopsis

The humic acids, HA, extracted from a Spanish lignite and the nitrohumic acids, NHA, and nitrofulvic acids, NFA, extracted from the same lignite after its nitration, are hydrolysed with 6N HCI under reflux. Theo-amino acids present in the hydrolysates are determined and thirteen&-amino acids are identified. The amounts of nitrogen in the amino-acids released by the hydrolysis increase according to the sequence: NFA>NHA>HA.