A novel, further improved construction of an electrothermal vaporization (ETV) unit is described, and new measurements are presented. Its main feature is an upstream within a vertical tube creating an axially focusing ...

Simple and express coulometric method for the evaluation of the total antioxidant capacity (TAC) of human plasma based on the reaction with electrogenerated bromine is applied. TAC of plasma from patients with different ...

A detailed analysis of the correlation between the number of absorbing atoms, N, and the absorbance, A, produced by them, i.e. A = f(N), is given. This analysis is valid for any optical thickness of the absorbing layer and ...

The relationship between an analytical signal, recorded at the spectrophotometer output, and the rate of sample atomization in the furnace has been analysed theoretically. The atomic transfer in the gas phase and the time ...

A charge-coupled device (CCD) camera was used as the detector in an Imaging system that was constructed for the Investigation of atomizers for atomic absorption spectrometry. The two-dimensional distributions of aluminum ...

Progress in atomic-absorption analysis is largely due to the development of flame and electrothermal atomization methods. However, despite the considerable advance in this field these techniques prove to be ineffective in ...

An algorithm is proposed that allows the calculation of irradiance distribution in the image of a three-dimensional emitter formed by an imaging mirror. The approach is based on a rigorous ray-tracing algorithm supplemented ...

The mechanism of aluminium spike formation and dissipation of aluminium atoms in electrothermal atomization absorption spectrometry has been investigated using two different approaches. The first approach employs a graphite ...

A novel system for solid sample pretreatment, handling and dosing for analytical atomic spectrometry is described. A primary solid or liquid sample is vaporized in a graphite furnace and then condensed in a specially ...

The dynamics of formation and dissipation of an Ag absorption layer in electrothermal atomic absorption spectrometry was investigated using the shadow spectral filming technique with different operating modes (i.e., gas-stop ...