Application of Zeeman background correction to direct current plasma excited atomic absorption spectroscopy

On-Line Detection of Vapor-Phase Copper Species by Plasma-Excited Atomic Absorption Spectroscopy

“…We have earlier observed that S rel is systematically lower in the presented atomizer than for ame and furnace atomizers. 13 On the other hand, the theoretically calculated S rel was also probably too high because in the calculations the in uence of nuclear spin has not been taken into account. For instance, Fernandez et al 14 reported on the experiments in a furnace atomizer, in which they found that S rel 5 0.41 in a magnetic eld of 0.3 and 0.9 T. The experimental effective absorption cross section was also lower than predicted.…”

On-line spectroscopic and spectrometric methods for the determination of metal species in industrial processes☆

“…In this case, a mixture of wood (spruce heartwood or bark) and waste was co-combusted [381]. Cadmium and lead were measured by AAS using Zeeman background correction [385] At the cyclone outlet, measured flue gas concentrations were in the range 0.04e0.74 mg/m 3 for cadmium and <0.6e4 mg/m 3 for lead. In the freeboard, concentrations determined for Cd were 0.042e0.54 mg/ m 3 and for Pb were <0.6e5.9 mg/m 3 .…”

“…In this case, detection of metal species was by AAS only, making use of the Zeeman background correction [223,385] method using magnetic fields of up to 0.88 T to remove background interferences.…”

Continuous Monitoring of Alkali Metals in Gas Flows Using Direct-Current Plasma Excited Atomic Spectroscopy

“…12 Since then, a modi cation of the method dedicated to the measurem ent of heavy metals was developed, 13 which is based on a hollow cathode lamp and Zeeman background correction. 14 In the case of the alkali metals, the measurement is based on the use of a broadband light source, which allows a m ore rugged and simple construction, also capable of operation at elevated pressures. Compared with the earlier work, laboratory tests using a calibration unit have indicated that in the case of alkali m etals, the assum ption of chemical equilibrium m ay lead to erroneous results.…”