title: Detoxification of AM-241 solutions by humic substances: bioluminescent monitoring.
abstract: The study addresses the effect of humic substances on marine luminous bacteria Photobacterium phosphoreum exposed to Am-241 (3,000 Bq L(-1), water solution). Luminescent intensity of the bacteria was applied as a marker of their physiological activity. Humic substances have been found to reduce the effect of Am-241 on luminescence, decrease damage to cells, and change distribution of Am-241 between bacterial cells and intercellular media. It was shown that water-soluble humic substances, being products of natural transformation of organic substances in soil and bottom sediments, can serve as protecting agents for water microorganisms exposed to alpha radionuclides.
authors.affiliation: Siberian Federal University, Krasnoyarsk 660041, Russia. gutniktv72@mail.ru
authors.forename: Tatiana
authors.initials: T
authors.lastname: Rozhko
authors.forename: Lidia
authors.initials: L
authors.lastname: Bondareva
authors.forename: Olga
authors.initials: O
authors.lastname: Mogilnaya
authors.forename: Galina
authors.initials: G
authors.lastname: Vydryakova
authors.forename: Alexander
authors.initials: A
authors.lastname: Bolsunovsky
authors.forename: Devard
authors.initials: D
authors.lastname: Stom
authors.forename: Nadezhda
authors.initials: N
authors.lastname: Kudryasheva
mesh_terms: D000576:Americium / Q000737:chemistry / Q000378:metabolism*; D001673:Biodegradation, Environmental; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D006812:Humic Substances / Q000032:analysis*; D049449:Luminescence; D010776:Photobacterium / Q000737:chemistry / Q000378:metabolism*; D011868:Radioisotopes / Q000737:chemistry / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism
chemical_list: D006812:Humic Substances; D011868:Radioisotopes; D014874:Water Pollutants, Chemical; D000576:Americium