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Bulk drug substance was analyzed without dilution by adding 60 70 μL of sample to a microcuvette and reading (typically) three sets of 12 14 individual scans.
In addition, when the same substance was analyzed by more than one method in the same study, the concentration reported using the most sensitive method (lower LO Q was used.
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There he focused on a technique in which the composition of a substance is analyzed by separating molecules and ions from its surface according to mass and charge, a process known as secondary ion mass spectrometry.
Changes in surface structure of V. vulnificus cells resulting from treatment with purified anti-Vibrio substance were analyzed by SEM.
Moreover, to appraise the degree of hazard associated with the use of CHP, the compatibility of CHP with various substances was analyzed, and a risk matrix for thermal runaway reactions was obtained.
For this reason, the contents of these substances were analyzed.
In addition, the types of crystalline and non-crystalline substances were analyzed and their content levels were evaluated.
Three substances are analyzed: cocaine, marijuana and basuco (crack), since they are believed to have similar characteristics of sale (Alcaldía de Bogotá 2016).
Methods: Ninety-eight different substances were analyzed using a mass spectrometer on a breath sample from all subjects and on each respective ambient air sample.
The number and composition of analytes in each survey of analytes varied across surveys and a total of 222 substances were analyzed for in one or more surveys and 163 were detected in one or more samples.
Groups A, B, and C, consisting of ionic substances, were analyzed with three CE-MS methods for cationic, anionic, and nucleotide metabolites; analysis of group D was with a CE-DAD method.
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