Stopped-flow injection analysis. The influence of diffusion on dispersion of normal and reverse flow injection

Israel, Yecheskel; Barnes, Ramon M.

doi:10.1007/bf01244494

Cited by 5 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microline tubing were used as the sample loop and for connecting the injector valve to the nebuilizer, in order to restrict the dispersion, to produce more symmetrical peak shapes and to improve precision (53). The inclusion of disoriented reactors in the flow manifold also has an overwhelming influence in the suppression of diffusion effects, which otherwise may effect the dispersion, especially in the case of high matrix concentration (54). The length of the transfer line from the valve to the nebulizer was made as short as possible (25 cm).…”

Section: Methodsmentioning

confidence: 99%

Expansion of dynamic working range and correction for interferences in flame atomic absorption spectrometry using flow-injection gradient ratio calibration with a single standard

Sperling¹,

Fang²,

Welz³

1991

Anal. Chem.

View full text Add to dashboard Cite

The potential usefulness of the reflective properties of microwave-induced plasma (MIP) as a gas chromatographic detector Is reported. The detector operation is based on the measurement of the change In reflected power arising from the Interaction of the analyte with an atmospheric pressure argon plasma sustained In the highly efficient TM010 resonant cavity. Microwave forward power and tangential gas flow are optimized for -pentane. The lowest microwave powers produced the best signal sensitivities. For the particular discharge tube employed, a maximum response Is obtained at approximately 1.6 L/mln. The nonlinear calibration curve obtained for n-pentane Is discussed, and Its conversion to a linearized calibration curve Is presented. Calculated detection limits for carbon and hydrogen lie In the upper nanograms of element per second range.

show abstract

Section: Methodsmentioning

confidence: 99%