Linked Life Data

16949742

Source:http://linkedlifedata.com/resource/pubmed/id/16949742

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-3-9
pubmed:abstractText
A simple, fast and sensitive differential pulse polarographic method (DPP) for the determination of pymetrozine insecticide in pure form, agrochemical formulation, natural water and orange juice samples is proposed. The polarographic behavior of pymetrozine exhibited a double well-defined polarographic peaks at -580 and 950mV (versus SCE), respectively. The peak potentials were strongly pH-dependent in that they shifted to more negative values with increasing pH. The polarographic reduction corresponding to the first peak at pH 2.0 (B-R buffer solution) showed quantitative increments with the additions of standard pymetrozine solution under the optimal conditions and the corresponding peak current was linearly proportional to pymetrozine concentration in the range of 4.97x10(-7) to 7.35x10(-5)molL(-1). The limit of detection (LOD) and limit of quantification (LOQ) were obtained as 1.48x10(-7) and 4.93x10(-7)molL(-1), respectively. The mean recoveries of the 5.0x10(-6)molL(-1) pymetrozine spiked to lake water and orange juice were (4.89+/-0.23)x10(-6) and (4.97+/-0.19)x10(-6)molL(-1) at 95% confidence level, respectively. The method was extended to the determination of pymetrozine in agrochemical insecticide formulation Plenum and accuracy was in agreement with that obtained by HPLC comparison method. Influences of some interfering ions and some other pesticides were also investigated. The mechanistic study was not pursued.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0304-3894
pubmed:author
pubmed:issnType
Print
pubmed:day
22
pubmed:volume
141
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
700-6
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Determination of insecticide pymetrozine by differential pulse polarography/application to lake water and orange juice.
pubmed:affiliation
Gazi University, Faculty of Art & Science, Department of Chemistry, 06500 Ankara, Turkey.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies