Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-10-28
pubmed:abstractText
Tetramethyl and ethylene thiourea are collected from air using midget impingers containing 15 mL water. Ethylene thiourea may also be collected from air using PVC or cellulose ester membrane filters which are then extracted with water. Pentacyanoamineferrate reagent is added to the filter-extract or to the impinger contents to form a colored coordination complex. The absorbance of the solution is measured spectrophotometrically at 590 nm, and the unknown concentration of tetramethyl or ethylene thiourea samples is determined from calibration curves. The detection limit is 0.75 microg/sample for ethylene thiourea and 3 microg/sample for tetramethyl thiourea. Experimental results indicate that this method can be used as a general analytical method for the analysis of other thiourea-derived compounds.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0002-8894
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
91-7
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Sampling and analytical determination of airborne tetramethyl and ethylene thiourea.
pubmed:affiliation
U.S. Department of Health, Education and Welfare, Public Health Service, National Institute for Occupational Safety and Health, Division of Physical Sciences and Engineering, Cincinnati, OH 45226, USA.
pubmed:publicationType
Journal Article