After testing arsenic-containing pyrite, why does it take 10-30 minutes for the signal background of elemental arsenic to be reduced to an acceptable range in LAICPMS

I'd be interested to hear what others have experienced, but I believe As is one of those "sticky" elements that adsorbs to the LA tubing. I've heard of labs ablating NIST glasses after each sulfide to help clean the tubing (and reduce the background), but that was a while ago and I'd be keen to hear what others are doing.

Kind regards,
Bence

Hi, Bence

Thank you for sharing your thoughts. I agree that As tends to adsorb to the LA tubing, causing "sticky" issues. I'd be very interested to hear if others have found effective solutions or new techniques for this problem.