Slow diuron release formulations based on clay-phosphatidylcholine complexes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F12%3A00481483" target="_blank" >RIV/61388980:_____/12:00481483 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.clay.2011.10.005" target="_blank" >http://dx.doi.org/10.1016/j.clay.2011.10.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2011.10.005" target="_blank" >10.1016/j.clay.2011.10.005</a>

Result language

angličtina

Original language name

Slow diuron release formulations based on clay-phosphatidylcholine complexes

Original language description

Slow release formulations of the herbicide diuron were designed to reduce the risk of water pollution resulting from conventional formulations. The new formulations were based on herbicide incorporation in phosphatidylcholine (PC) vesicles that were sorbed on the clay mineral montmorillonite. The active ingredient contents of the formulations reached up to 28% w:w. Thermal analysis revealed that the closely packed arrangement of PC on the clay enhanced diuron sorption by disrupting the interactions among PC molecules. Adsorption experiments using diuron were performed in soils with different physico-chemical properties to evaluate the relationship between the sorption and the mobility of the herbicide. In soil column experiments with sandy soil, the herbicide in PC-clay-based formulations mainly accumulated in the top soil, and there was a one-third reduction in leaching compared to the commercial formulation. The differences in leaching (compared to the commercial formulation) were lower when using loam soil due to its higher sorption of the herbicide and hysteresis effects. In the sandy soil, bioassay experiments showed a higher herbicidal activity in the top-soil layer for the PC-clay formulations than for the commercial formulation. Therefore, PC-clay formulations of this herbicide can be used at lower doses than recommended, thereby reducing the environmental risks associated with the application of diuron formulations.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/LC523" target="_blank" >LC523: Perspective inorganic materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Clay Science

ISSN

0169-1317

e-ISSN

—

Volume of the periodical

55

Issue of the periodical within the volume

JAN

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

53-61

UT code for WoS article

000299984300007

EID of the result in the Scopus database

2-s2.0-84855420977