Determining and minimizing the analytical blank is especially important to achieve robust x-ray microanalysis in the VPSEM-ESEM.
1 The Analytical Blank for Particle Analysis: Conventional SEM
For VPSEM-ESEM analysis, the analytical blank is more complicated and consists of two levels, the preparation blank and the operational blank.
Problems connected with the analytical blank
in plasma renin activity measurements by angiotensin-I radioimmunoassay.
Quality assurance and quality control programs include the use of analytical blanks
, standards, and duplicates in addition to the lab's own internal quality assurance program.
We analyzed adequate sets of analytical blanks before sample analysis; these included system and solvent blanks as well as blanks for the sampling device, pipettes, and storage tubes.
The concentration values of phthalate esters shown in this table have been corrected for the presence of phthalates in analytical blanks.
We tested several analytical blanks to establish if contamination from the sampling, storage, extraction, and analysis of samples could interfer with the real samples.