Evaluation of the time-resolved spark for the determination of sodium, potassium, and calcium in microsamples

John T. McDonald, James Williams, James C. WIlliams

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper describes the evaluation of a time-resolved graphite spark source emission spectrometer built for the purpose of determining Ca, Na, and K in nanoliter volume samples of renal fluid. Subnanogram detection limits calculated from the working curve slope and the uncertainty of the sample signal are reported for Ca, Na and K; these detection limits are some three orders of magnitude higher than the shot noise limit. With the use of Li as an internal standard, working curves from 0 to 1 ng of Na, K, and Ca are shown. System performance data are given, and the utility of the analysis is discussed.

Original languageEnglish (US)
Pages (from-to)697-702
Number of pages6
JournalApplied Spectroscopy
Volume43
Issue number4
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

Fingerprint

Shot noise
Graphite
sparks
Electric sparks
Potassium
Spectrometers
calcium
Calcium
potassium
Sodium
sodium
Fluids
evaluation
shot noise
curves
graphite
spectrometers
slopes
fluids
Uncertainty

ASJC Scopus subject areas

  • Instrumentation
  • Spectroscopy

Cite this

Evaluation of the time-resolved spark for the determination of sodium, potassium, and calcium in microsamples. / McDonald, John T.; Williams, James; WIlliams, James C.

In: Applied Spectroscopy, Vol. 43, No. 4, 01.01.1989, p. 697-702.

Research output: Contribution to journalArticle

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