Greetings Plasma Chemist,
I am having an event where my Li wavelength(670.784)is reported as saturated in my calibrant. This "error" does not happen everytime I calibrate the PE 3000 DV, but it does happen the majority of time, about eight out of ten. When Li is successfully calibrated it generates approximately 14,000,000 counts. This intensity is higher than any other element in the calibration soup. I looked at data that was a year old and the counts for LI were 5,000,000 counts. We checked the concentration of our Li calibrant on the MS and it was within the acceptable range for 1.0 ppm. Our instrument is fifteen years old. This started happening after I had to rebuild the method after loosing files, so the odds of operator error are high. I have looked at the delay times in our documentation and they are the same as before the data loss.
Thankyou in advance for your time and advice.
1000 NE Circle Blvd.
Corvallis, Or 97330