Stability of immobilized 2,4,6-trinitrotoluene metabolites in soil under long-term leaching conditions.
Identifieur interne : 000A20 ( Main/Exploration ); précédent : 000A19; suivant : 000A21Stability of immobilized 2,4,6-trinitrotoluene metabolites in soil under long-term leaching conditions.
Auteurs : C. Achtnich [Allemagne] ; H. LenkeSource :
- Environmental toxicology and chemistry [ 0730-7268 ] ; 2001.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : 2,4,6-Trinitro-toluène, Phanerochaete, Polluants du sol.
- Saisons, Température.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Soil Pollutants, Trinitrotoluene.
- metabolism : Phanerochaete.
- Seasons, Temperature.
Abstract
2,4,6-Trinitrotoluene (TNT)-contaminated soil was remediated by an anaerobic/aerobic slurry process. Prior to treatment, the soil was spiked with [14C]-TNT. Leaching experiments were carried out with the decontaminated soil to determine the degree of binding of the radiolabel under a variety of conditions. To simulate natural degradation processes of soil organic matter, each of three columns was subjected to a different treatment known to enhance biological transformation over a 92-week period. Only minor amounts of radioactivity (1.0% of the bound radioactivity) were released from treated soil incubated in the presence of the lignin-degrading fungus Phanerochaete chrysosporium. Simulation of seasonal variation in temperature, including freezing of the soil, did not cause a significant release of radioactivity (1.4%). Growth and flowering of the bush bean Phaseolus vulgaris only released 0.8% of the bound radioactivity to the eluate; however, during the decomposition phase, an additional 7.7% of the bound radioactivity was released. We propose that this radioactivity was bound to soluble humic material that was mobilized due to a pH shift during the decomposition of the plant organic matter. This is supported by the observation that neither free TNT nor its metabolites were present in the eluate. During the different incubation experiments, 3.9 to 8.5% of the bound radioactivity was found as 14CO2. The results indicate a slow turnover of even strongly bound immobilized metabolites of TNT.
DOI: 10.1897/1551-5028(2001)020<0280:soitmi>2.0.co;2
PubMed: 11351427
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Achtnich</name><affiliation wicri:level="3"><nlm:affiliation>Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik, Nobelstrasse 12, 70569 Stuttgart, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik, Nobelstrasse 12, 70569 Stuttgart</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Stuttgart</region><settlement type="city">Stuttgart</settlement></placeName></affiliation></author><author><name sortKey="Lenke, H" sort="Lenke, H" uniqKey="Lenke H" first="H" last="Lenke">H. 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Prior to treatment, the soil was spiked with [14C]-TNT. Leaching experiments were carried out with the decontaminated soil to determine the degree of binding of the radiolabel under a variety of conditions. To simulate natural degradation processes of soil organic matter, each of three columns was subjected to a different treatment known to enhance biological transformation over a 92-week period. Only minor amounts of radioactivity (1.0% of the bound radioactivity) were released from treated soil incubated in the presence of the lignin-degrading fungus Phanerochaete chrysosporium. Simulation of seasonal variation in temperature, including freezing of the soil, did not cause a significant release of radioactivity (1.4%). Growth and flowering of the bush bean Phaseolus vulgaris only released 0.8% of the bound radioactivity to the eluate; however, during the decomposition phase, an additional 7.7% of the bound radioactivity was released. We propose that this radioactivity was bound to soluble humic material that was mobilized due to a pH shift during the decomposition of the plant organic matter. This is supported by the observation that neither free TNT nor its metabolites were present in the eluate. During the different incubation experiments, 3.9 to 8.5% of the bound radioactivity was found as 14CO2. The results indicate a slow turnover of even strongly bound immobilized metabolites of TNT.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">11351427</PMID><DateCompleted><Year>2001</Year><Month>06</Month><Day>14</Day></DateCompleted><DateRevised><Year>2019</Year><Month>09</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0730-7268</ISSN><JournalIssue CitedMedium="Print"><Volume>20</Volume><Issue>2</Issue><PubDate><Year>2001</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Environmental toxicology and chemistry</Title><ISOAbbreviation>Environ Toxicol Chem</ISOAbbreviation></Journal><ArticleTitle>Stability of immobilized 2,4,6-trinitrotoluene metabolites in soil under long-term leaching conditions.</ArticleTitle><Pagination><MedlinePgn>280-3</MedlinePgn></Pagination><Abstract><AbstractText>2,4,6-Trinitrotoluene (TNT)-contaminated soil was remediated by an anaerobic/aerobic slurry process. Prior to treatment, the soil was spiked with [14C]-TNT. Leaching experiments were carried out with the decontaminated soil to determine the degree of binding of the radiolabel under a variety of conditions. To simulate natural degradation processes of soil organic matter, each of three columns was subjected to a different treatment known to enhance biological transformation over a 92-week period. Only minor amounts of radioactivity (1.0% of the bound radioactivity) were released from treated soil incubated in the presence of the lignin-degrading fungus Phanerochaete chrysosporium. Simulation of seasonal variation in temperature, including freezing of the soil, did not cause a significant release of radioactivity (1.4%). Growth and flowering of the bush bean Phaseolus vulgaris only released 0.8% of the bound radioactivity to the eluate; however, during the decomposition phase, an additional 7.7% of the bound radioactivity was released. We propose that this radioactivity was bound to soluble humic material that was mobilized due to a pH shift during the decomposition of the plant organic matter. This is supported by the observation that neither free TNT nor its metabolites were present in the eluate. During the different incubation experiments, 3.9 to 8.5% of the bound radioactivity was found as 14CO2. The results indicate a slow turnover of even strongly bound immobilized metabolites of TNT.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Achtnich</LastName><ForeName>C</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik, Nobelstrasse 12, 70569 Stuttgart, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lenke</LastName><ForeName>H</ForeName><Initials>H</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Environ Toxicol Chem</MedlineTA><NlmUniqueID>8308958</NlmUniqueID><ISSNLinking>0730-7268</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012989">Soil Pollutants</NameOfSubstance></Chemical><Chemical><RegistryNumber>118-96-7</RegistryNumber><NameOfSubstance UI="D014303">Trinitrotoluene</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D020075" MajorTopicYN="N">Phanerochaete</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012621" MajorTopicYN="N">Seasons</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012989" MajorTopicYN="N">Soil Pollutants</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="N">Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014303" MajorTopicYN="N">Trinitrotoluene</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2001</Year><Month>5</Month><Day>16</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2001</Year><Month>6</Month><Day>23</Day><Hour>10</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2001</Year><Month>5</Month><Day>16</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">11351427</ArticleId><ArticleId IdType="doi">10.1897/1551-5028(2001)020<0280:soitmi>2.0.co;2</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li></country><region><li>Bade-Wurtemberg</li><li>District de Stuttgart</li></region><settlement><li>Stuttgart</li></settlement></list><tree><noCountry><name sortKey="Lenke, H" sort="Lenke, H" uniqKey="Lenke H" first="H" last="Lenke">H. Lenke</name></noCountry><country name="Allemagne"><region name="Bade-Wurtemberg"><name sortKey="Achtnich, C" sort="Achtnich, C" uniqKey="Achtnich C" first="C" last="Achtnich">C. Achtnich</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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