Not as accurate as a spectral analysis.
A flame test is not very accurate because the other chemicals that you are testing will fall into your Bunsen burner creating a contaminated flame. Therefore you may see mixed colorations in the flame and get a negative reading for your chemicals color
1. not all elements give colour to the flame 2. flame test is not always accurate
The flame test in analytical chemistry is only qualitative.
A flame test.
NaCl burns yellow in a flame test.
Aluminium ions like Magnesium ions have no colour in a flame test
you need to do the flame test you need to do the flame test
Flame test
The temperature of the flame.
The flame test is used for the qualitative determination of some ions in solution.
Iron has a yellow-gold color in the flame test.
just looking at the color of the flame --- qualitative