System stability, count rate performance, detector shielding, and sample volume effects were investigated.
Sample volume effects are, therefore, another important performance parameter when gamma counters are to be used with samples of potentially different sizes.
A NaI(Tl) gamma counter was characterized with respect to count rate performance, adequacy of detector shielding, system stability, and sample volume effects using positron-emitting radionuclides (409- to 613-keV energy window).
It has been found that the most effective factor is sample volume that positively effect on response.
The parameters related to the μ-SPE procedure namely; pH, sorbent amount, extraction solvent type and volume, sonication and vortex time, sample volume and salt effect on the extraction efficiency were screened by applying Plackett Burmann design.
We also report a significant ion suppression effect of the red cell preparation for which we have optimized assay sample volume to minimize this effect.
The variables of interest in the DLLME process were extraction and disperser solvent volumes, salt effect, sample volume, extraction temperature and extraction time.
The variables of interest, such as the volume of extraction solvent and disperser solvent, salt effect, sample volume, and extraction time in the DLLME process, were optimized with the aid of response surface methodology and experimental design (RS M.
