Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1998-9-24
pubmed:abstractText
A rapid, reliable and effective method for direct determination of the inert components, manufacturing by-products of the pesticide, and active ingredient in two malathion formulations has been established using capillary gas chromatography-mass spectrometry (GC-MS) with the internal standard method. The C2-, C3-, and C4-alkylbenzenes, the major pesticide manufacturing by-products (O,O,S-trimethylthionophosphate, diethyl maleate and O,O,O-trimethylthionophosphate), and malathion were resolved, and quantified in the same chromatogram. Structural identification was based on MS total ion current data, comparison of GC retention times with those of authentic standards, and retention indices. O,O,S-Trimethylthionophosphate was quantified at 3.57 +/- 0.31% (w/w) in one malathion formulation. While the malathion contents were within specifications for both formulations, the total alkylbenzene contents were not.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0021-9673
pubmed:author
pubmed:issnType
Print
pubmed:day
24
pubmed:volume
814
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
181-6
pubmed:dateRevised
2009-1-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Simultaneous gas chromatographic-mass spectrometric quantitation of the alkylbenzene inert components, pesticide manufacturing by-products and active ingredient in two malathion formulations.
pubmed:affiliation
Department of Environmental Health Sciences, UCLA School of Public Health 90095-1772, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't