matrix effects

matrix effects

[′mā·triks i‚feks]
(analytical chemistry)
The enhancement or suppression of minor element spectral lines from metallic oxides during emission spectroscopy by the matrix element (such as graphite) used to hold the sample.
The combined effect exerted by the various constituents of the matrix on the measurements of the analysis.
References in periodicals archive ?
Due to matrix effects associated with the non-human material in the QC, the lab had to reassign QC values upon every reagent batch change due to significant shifts in QC performance, resulting in unnecessary time and QC wastage.
A comparison of the matrix effects of the two variants was made as an indicator of the method specificity.
At the same time, a quaternary mobile phase consisting of acetic acid, water, acetonitrile, and methanol was used to decrease the matrix effects of icaritin from 3.
Support in the initial establishment of the deterministic method and help in mining the extent to undesired matrix effects and solutions will be sought from the supplier.
It is not surprising that matrix effects happen so frequently, especially for new products--formulators are becoming more creative in the encapsulation of actives and they may contain mixtures of synthetic actives with botanical extracts.
According to numerous studies, matrix effects are a result of a disrupted ESI process by sources such as endogenous, non-volatile and exogenous components that affect ion ejection from the liquid droplet surface.
Even difficult sample types with heavy matrix effects can be successfully analyzed.
They state that even difficult sample types with heavy matrix effects can be successfully analyzed.
incomplete extraction from solid samples, degradation reactions, matrix-dependent recovery of extraction, lack of adequate internal standards, matrix effects, poor sensitivity of analytical techniques, etc.
The different approaches have been undertaken to discriminate the problems resulting from the fractionation of the ablation and matrix effects.