Can I run Potassium and Sodium on the ICP-MS 7900 in No Gas mode. If so, can someone let me know what the interference equations would be?
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Can I run Potassium and Sodium on the ICP-MS 7900 in No Gas mode. If so, can someone let me know what the interference equations would be?
Yes you can analyze sodium in No Gas mode (unless you also have an enormous amount of Li in your sample :-)).
For potassium you need He or H2 mode because there is a lot of Ar interference in No Gas mode. And you can't make an interference equation for that.
Yes you can analyze sodium in No Gas mode (unless you also have an enormous amount of Li in your sample :-)).
For potassium you need He or H2 mode because there is a lot of Ar interference in No Gas mode. And you can't make an interference equation for that.
In nogas mode, a large number of bivalent ions will contribute to Na, which can be tried by increasing the sampling depth, increasing the carrier gas flow, and reducing the plasma energy. But it is conceivable that the BEC will not be low.
K is because of the large amount of interference of Ar+H, and He, H2 can be used to reduce the influence of Ar+. H2 mode is recommended.