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- Posts: 392
- Joined: Thu Sep 08, 2005 4:12 am
- Location: Texas
what can be the cause?
Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.
LALman wrote:
Silver Chloride is slightly soluble in nitric acid. Each time you dilute you get a slight amount more (taking DF into account).
For 20+ years I've run ICP-AES and ICP-MS using a 2%HNO3-1%HCl final dilution matrix. I do my digestions with those acids in that ratio. This will keep at least up to 1 ppm Ag soluble at the instrument in standards and samples. That way chloride interference is not a problem. You also get better recoveries of As, Sb, and Tl in complex matrix with chloride present.
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