Linked Life Data

18853798

Source:http://linkedlifedata.com/resource/pubmed/id/18853798

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
18
pubmed:dateCreated
2008-10-15
pubmed:abstractText
Herbicides are typically applied as formulation mixtures in order to ensure uniform application and improve biocide performance, but little is known about the effects of formulated surfactants on herbicide exchange between soil and the atmosphere. Desorption experiments were performed for seven herbicides from the chloroacetanilide and dinitroaniline families with model anionic-nonionic surfactant mixtures under a range of relative humidity (RH) conditions (3-66%) on two soils. Enhanced desorption of herbicides from soil to the gas phase was observed asthe concentration of surfactant mixture or the RH increased. Multiple linear regression models developed to summarize the soil/air desorption behavior of these herbicides revealed that surfactant concentration, relative humidity, and herbicide properties (i.e., K(H), K(OA)) all have significant contributions to herbicide desorption. However, the ANOVA results indicated that surfactant concentration only accounted for 1.4% of the variance in desorption, RH accounted for 40-60%, and herbicide properties, logK(H) or logK(OA), accounted for 20-40%. The study results predict that less than a 20% increase (study range 1.5-21.0%) in surfactant concentration could double the atmospheric losses of herbicide from their soil application sites, and about a 60% increase in ambient RH (3-66%) elevated the losses by 10-40 times.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0013-936X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6843-8
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Relative effects of surfactants and humidity on soil/air desorption of chloroacetanilide and dinitroaniline herbicides.
pubmed:affiliation
Environmental Engineering Program, University of Connecticut, Storrs, Connecticut 06269-2037, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.