Publikation:
Formation and fate of point-source nonextractable DDT-related compounds on their environmental aquatic-terrestrial pathway

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dc.contributor.authorZhu, Xiaojing
dc.contributor.authorDsikowitzky, Larissa
dc.contributor.authorKucher, Sebastian
dc.contributor.authorRicking, Mathias
dc.date.accessioned2024-06-16T14:34:49Z
dc.date.available2024-06-16T14:34:49Z
dc.date.issued2019
dc.description.abstractNonextractable residues (NER) are pollutants incorporated into the matrix of natural solid matter via different binding mechanisms. They can become bioavailable or remobilize during physical-chemical changes of the surrounding conditions and should thus not be neglected in environmental risk assessment. Sediments, soils, and groundwater sludge contaminated with DDXs (DDT, dichlorodiphenyltrichloroethane; and its metabolites) were treated with solvent extraction, sequential chemical degradation, and thermochemolysis to study the fate of NER-DDX along different environmental aquatic-terrestrial pathways. The results showed that DDT and its first degradation products, DDD (dichlorodiphenyldichloroethane) and DDE (dichlorodiphenyldichloroethylene), were dominant in the free extractable fraction, whereas DDM (dichlorodiphenylmethane), DBP (dichlorobenzophenone), and DDA (dichlorodiphenylacetic acid) were observed primarily after chemical degradation. The detection of DDA, DDMUBr (bis(p-chlorophenyl)-bromoethylene), DDPU (bis(p-chlorophenyl)-propene) and DDPS (bis(p-chlorophenyl)-propane) after chemical treatments evidenced the covalent bindings between these DDXs and the organic matrix. The identified NER-DDXs were categorized into three groups according to the three-step degradation process of DDT. Their distribution along the different pathways demonstrated significant specificity. Based on the obtained results, a conceptual model of the fate of NER-DDXs on their different environmental aquatic-terrestrial pathways is proposed. This model provides basic knowledge for risk assessment and remediation of both extractable and nonextractable DDT-related contaminations. © 2019 American Chemical Societyen
dc.format.extent1 Onlineressource (Seiten 1305-1314)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-1924
dc.identifier.urihttps://openumwelt.de/handle/123456789/5049
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleFormation and fate of point-source nonextractable DDT-related compounds on their environmental aquatic-terrestrial pathway
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleEnvironmental Science & Technology
local.bibliographicCitation.originalDOI10.1021/acs.est.8b06018
local.bibliographicCitation.volume53 (2019), Heft 3
local.collectionAufsätze
local.contributor.authorId(DE-588)1083502778
local.contributor.authorId02182939
local.contributor.authorId(DE-588)128546697
local.contributor.authorId02110616
local.contributor.authorId02182941
local.identifier.catalogId02469148
local.ingest.leader05161naa a2200000uu 4500
local.jointTitleFORMATION AND FATE OF POINTSOURCE NONEXTRACTABLE DDTRELATED COMPOUNDS ON THEIR ENVIRONMENTAL AQUATICTERRESTRIAL PATHWAY
local.reviewtrue
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