determination of concentration by the ability of atoms to absorb radiant energy of specific wavelengths. Farlex Partner Medical Dictionary © Farlex 2012 a·tom·ic ab·sorp·tion spec·tro·pho·tom·e·try (ă-tom'ik ab-sōrp'shŭn spek'trō-fō-tom'ĕ-trē) Determination of concentr...
Industrial processes associated mainly with nuclear energy and weapons production require the isolation or concentration of particular isotopes. When the by-product elements or compounds from which these isotopes have been depleted eventually get distributed in the environment or sold into the commercial ma...
A specific wavelength of 766.5 nm is used in order to determine potassium, and the equipment reading resolution is adjusted to the response given to the pattern of greatest concentration used. An effort must be made to avoid possible interference problems due to the matrix characteristics of the ...
In particular, the intrinsic complex interactions among multi-principal components9, mainly tied to mixing entropy ΔSmix10, mixing enthalpy ΔHmix11, atomic size difference δ12, electronegativity difference χ13, and valence electron concentration (VEC)14, render the compositional space of high-...
(or more generally, a change in signal vs the change in concentration), but far more commonly it is used to signify the ability to detect or quantify an analyte at very low concentration; that is, a highly sensitive technique would be able to detect or quantify a very low concentration ...
Atomic Absorption Spectroscopy Atomic absorption spectroscopy utilizes the process of absorption to measure the concentration of metals. Absorption of electromagnetic radiation is quantitatively defined in Fig. 1. Fig. 1 This is known as theBeer-Lambert Law. ...
The recently developed Arrhenius formula of the modified Sutherland equation was first employed to calculate the self- and impurity diffusivities in liquid Sn, Bi, and Pb. The reliability of the calculated results was validated in comparison with the critically reviewed literature data. Based on the...
Moreover, the atomic mobilities were further verified by comparing the model-predicted concentration profiles with the measured ones in various liquid Sn-In diffusion couples. In addition, a simulation of Ag dissolution into liquid Sn-Ag solder during a reflow process was performed via the presently...
Due to the shell structure of atoms, the atomic radius mainly depends on the electronic shell number (ESN) and the outermost electron number or valence electrons (i.e., valence electron concentration, VEC). ESN is also the period number, and VEC is also the group number for the elements ...
The intensity of the energy emitted at the chosen wavelength is proportional to the amount (concentration) of that element in the analyzed sample. Thus, by determining which wavelengths are emitted by a sample and by determining their intensities, the analyst can quantify the elemental co...