There is no universal flame temperature for flame-based atomic spectroscopy that gives optimal results for all elements.________________________________________gives a____________________.
A)Excess oxidant;cooler flame
B)Excess oxidant;hotter flame
C)Shorter aspiration time;cooler flame
D)Longer aspiration time;hotter flame
E)Excess analyte;hotter flame

Question

Quizplus · Accepted Answer

The flame temperature required for optimal results in flame-based atomic spectroscopy will vary depending on the element being analyzed. Generally, a hotter flame is more suitable for elements that require high temperatures for atomization and excitation, such as alkali metals, whereas a cooler flame may be more appropriate for elements that are easily excited, such as those in the group three of the periodic table. Excess oxidant is also required for complete combustion of the sample, but this does not necessarily determine the optimal flame temperature. Shorter aspiration time or excess analyte would not affect the flame temperature.

There Is No Universal Flame Temperature for Flame-Based Atomic Spectroscopy