Elements that Compromise Torch Integrity

HF is definitely an important factor but I cannot remember any special elements which could compromise torch integrity. In general, cleanness of the torch is critical.

And if you are using solid sample and doing digestion for sample preparation then proper method of digestion also very important...

Seems that alkaline earth metals and especially the alkali metals are more involved in exchanging the elements out of the torches. So element like Si is exchanged by for example K in the Si crystal structure. Then a weak bound crystal is in places. Then the K crystal is easy evaporated then a milk white color of the glass is observed. This behavior is more seen in the Agilent 700 series. But now with another designed torch and other gas flows this isn't seen that much with the Agilent 5000 series.