Linked Life Data

12137462

Source:http://linkedlifedata.com/resource/pubmed/id/12137462

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
16
pubmed:dateCreated
2002-7-24
pubmed:abstractText
A novel green method using flow injection chemiluminescence with controlled-reagent-release technology has been investigated for the rapid and sensitive monitoring of sub-nanogram amounts of chlorpyrifos. The analytical reagents involved in chemiluminescence (CL) reaction, luminol and periodate, were both immobilized on an anion-exchange column. The CL signals produced by the reaction between luminol and periodate, which were eluted from the column through water injection, were decreased in the presence of chlorpyrifos. The decrease of CL intensity was linear over the logarithm of concentration of chlorpyrifos ranging from 0.48 to 484.0 ng x mL(-1) (r(2) = 0.9969), and the limit of detection was 0.18 ng x mL(-1) (3sigma). At a flow rate of 2.0 mL x min(-1), the determination of chlorpyrifos, including sampling and washing, could be performed in 0.5 min with a relative standard deviation of less than <3.0%. The proposed method was applied successfully in an assay of remnant chlorpyrifos on fruits such as orange and shaddock with the recovery of 94.4-107.4%. The change of the concentration of chlorpyrifos in a water sample was also investigated, and the variation rate was 99.96% during 35 h in the open air.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0021-8561
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
50
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4468-74
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
A new green analytical procedure for monitoring sub-nanogram amounts of chlorpyrifos on fruits using flow injection chemiluminescence with immobilized reagents.
pubmed:affiliation
Department of Chemistry, Northwest University, Xi'an 710069, People's Republic of China. songzhenghua@hotmail.com
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't