Determination of caesium and rubidium by flame and furnace atomic-absorption spectrometry

Abstract

Caesium and rubidium have been determined by flame and furnace atomicabsorption spectrometry. It was found that both techniques are reasonably free from interferences and accurate enough for the routine analysis of various types of samples.

Isotope selective element analysis by diode laser atomic absorption spectrometry

“…This is about an order of magnitude better than the absorption at the detection limit for wavelength modulation. For comparison, the detection limit for Rb in conventional HC-GF-AAS is reported to be 50pg/mL [23]. Our results for rubidium isotopes by Doppler-free saturation spectroscopy at reduced buffer gas pressure are slightly worse.…”

Role of a Binary Metallic Modifier in the Determination of Cadmium in Graphite Furnace Atomic Absorption Spectrometry

“…GF-AAS can thus be an effective analytical method for industrial uses [2][3][4][5] as well as environmental assessment. [6][7][8][9] A graphite furnace for GF-AAS is heated with a high electric current to generate atomic vapor for the absorption measurement, along with a suitable temperature program for each analyte element to be pre-determined. The temperature program, which usually comprises drying, charring, atomizing and cleaning stages, controls various physical and chemical reactions for an analyte species occurring in the furnace; thus, it principally determines the analytical performance of GF-AAS.…”

Chemically Modified Carbon Paste Electrode for Determination of Cesium Ion by Potentiometric Method

“…More stringent requirements are needed for the monitoring and determination of cesium ion in mineral rocks, thermal water in nuclear and industrial wastes, soil, plants, biological, and botanical samples. Various methods have been reported for cesium ion determination in aqueous and non-aqueous solutions including spectrophotometry [10], atomic absorption spectrometry [11,12], radioanalysis [13][14][15]. However, these methods required expensive instruments, well-controlled experimental conditions, and frequent maintenance and calibration.…”