Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2005-9-26
pubmed:abstractText
The efficiency of nano-electrospray ionization, defined as the flux of ions reaching the detector of a triple-quadrupole mass spectrometer divided by the flux of analyte ions leaving the needle, has been measured in a series of controlled experiments with dodecyltrimethyl ammonium (DDTMA) bromide, myoglobin, Glu- [1]-fibrinopeptide, and gramicidin S. By varying the flow rate from each needle, the optimum efficiency was determined. In general, the efficiency increased as the flow rate decreased. For DDTMA, efficiencies of up to 12% were measured, although efficiencies of approximately 1% were more common. Ion current measurements indicated efficient transfer of ions from the needle through to the detector. Significant needle-to-needle variations in efficiency were encountered and attributed to variations in ion-generation efficiency.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1044-0305
pubmed:author
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1702-7
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Efficiency of nano-electrospray ionization.
pubmed:affiliation
Department of Chemistry and Center for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada.
pubmed:publicationType
Journal Article