Frequently Asked Questions

While I'm running a batch and doing the initial tune batch there isn't any counts being read for any of my mass's. However under the Tune tab after adjusting the He Flow to 0 I start to read counts for the elements , but once I adjust it back up it reads 0 again. I have checked if sample introduction is the source of the problem, I have cleaned and checked the nebulizer, lines, tuning solutions and that seems to be running fine. I believe my problem lies somewhere else. I have an Agilent 7800 ICP-MS.

I daily use some costume made solutions from IV, both as stock solutions and also special ones for matrix-matched calibrations. We have different sample types from research campaigns at our site, and for a new project I need a control solution as an extra calibration control. Is it possible to order both a stock solution (for my calibration standards) with the actual elements at the same (?) concentration levels - and also a costume made solution with accurate individual concentration of the elements which might be used as a quality solution for my verification of a method, as an CRM, or would you recommend anything else? My supplier here in Norway have tried to understand what I was asking for, and the IV- samples Matriks-199 and Matriks-200 are based on this. But I am not sure if that is what I want.

Will there be any difference in results if let's say, I use a inorganic standard that was previously prepared in 8% HNO3 vs the same inorganic standard but prepared in matrix 5% HNO3 ?

Do you know how to measure the make up and carrier gas flow used in the sample introduction?. Our instrument is Agilent 7800 ICP-MS

Hi, we have an ICP-MS 7800 and was running normally until a routine service was done. Nebulizer and chamber were cleaned by following Agilent Instructions. When we started the instrument an error appeared indicating poor sensitivity. We prepared new tune solution (1ppb) and check masses, but the problem persist. No leaks were detected. Your guidance will be appreciated.

How many mL of 1 ppm of gold (as AuCl3) should I add to 100mL of sample to stabilize Hg?