No abstract

No abstract

On the carcinogenicity of a single intragastric dose of hydrocarbons, nitrosamines, aromatic amines, dyes, coumarins, and miscellaneous chemicals in female Sprague-Dawley rats.

An approach to online laboratory exercises for analytical chemistry students with demonstrated practical exercises through the use of remote-controlled gas chromatography (GC) instrumentation is discussed. The approach allows for a practical-based learning activity to be carried out by students who are unable to attend in-person laboratory exercises and was conducted during the COVID-19 pandemic. Learning activities focused on the operation of GC instrumentation were completed prior to a research-based analysis activity being conducted by students. At the end of this experiment, the students are expected to understand, independently operate, and learn how to achieve better separation through the manipulation of GC settings, such as split/splitless injections, carrier gas flow rate, and oven temperature, and apply principles of GC to a practical application. Additional flexibility from this approach could also be beneficial during postpandemic and/or in the circumstance where students cannot physically attend the class.