UNIVERSI
TÄ
TS-
BIBLIOTHEK
P
ADERBORN
Anmelden
Menü
Menü
Start
Hilfe
Blog
Weitere Dienste
Neuerwerbungslisten
Fachsystematik Bücher
Erwerbungsvorschlag
Bestellung aus dem Magazin
Fernleihe
Einstellungen
Sprache
Deutsch
Deutsch
Englisch
Farbschema
Hell
Dunkel
Automatisch
Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist
gegebenenfalls
nur via VPN oder Shibboleth (DFN-AAI) möglich.
mehr Informationen...
Universitätsbibliothek
Katalog
Suche
Details
Zur Ergebnisliste
Ergebnis 18 von 284
Datensatz exportieren als...
BibTeX
Strong Adsorption of Dieldrin by Parent and Processed Montmorillonite Clays
Environmental toxicology and chemistry, 2020-03, Vol.39 (3), p.517-525
Hearon, Sara E.
Wang, Meichen
Phillips, Timothy D.
2020
Details
Autor(en) / Beteiligte
Hearon, Sara E.
Wang, Meichen
Phillips, Timothy D.
Titel
Strong Adsorption of Dieldrin by Parent and Processed Montmorillonite Clays
Ist Teil von
Environmental toxicology and chemistry, 2020-03, Vol.39 (3), p.517-525
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2020
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Widespread use of pesticides has resulted in the accumulation of pesticide residues in the environment due to their persistence and stability. To reduce potential exposures, we have developed broad‐acting clay‐based sorbents that can be included in the diet as enterosorbents to reduce the bioavailability and toxicity of chemicals. In the present study, parent and acid‐processed calcium montmorillonite clays (CM and APM, respectively) were used to determine their potential as sorbents of the organochlorine insecticide dieldrin. We used adsorption isotherms, thermodynamics, and dosimetry studies to determine the capacities and affinities of the clays, the enthalpies of the binding reactions, and potential doses of sorbent that could protect against high exposures. Adsorption isotherms for APM fit a Langmuir model with high enthalpy (suggesting chemisorption) and high capacity (Qmax value = 0.45 mol kg–1), indicating tight binding of dieldrin. Cultures of Hydra vulgaris were used to determine the ability of sorbents to protect a living organism from dieldrin toxicity. The inclusion of acid‐processed clays resulted in the highest reduction of dieldrin toxicity (70%) in the hydra. Further work indicated that both CM and APM can significantly reduce the bioavailability of dieldrin from soil (p ≤ 0.01). These results suggest that APM (and similar clays) can be effective sorbents of dieldrin and may be included in the diet and/or soil to protect against environmental exposures. Environ Toxicol Chem 2020;39:517–525. © 2019 SETAC
Sprache
Englisch
Identifikatoren
ISSN: 0730-7268
eISSN: 1552-8618
DOI: 10.1002/etc.4642
Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7047628
Format
–
Schlagworte
Adsorption
,
Animals
,
Bentonite - chemistry
,
Binding
,
Bioavailability
,
Biological Availability
,
Calcium
,
Calcium - chemistry
,
Chemisorption
,
Clay
,
Clay - chemistry
,
Dieldrin
,
Dieldrin - metabolism
,
Diet
,
Dosimeters
,
Dosimetry
,
Enthalpy
,
Environmental Exposure - prevention & control
,
Exposure
,
Hydra - metabolism
,
Insecticides
,
Insecticides - metabolism
,
Isotherm
,
Isotherms
,
Montmorillonite
,
Organic chemistry
,
Organic compounds
,
Organochlorine pesticides
,
Organochlorines
,
Pesticide residues
,
Pesticides
,
Soils
,
Sorbents
,
Toxicity
,
Water Pollutants, Chemical - metabolism
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von
bX