25/04/2024
Dissolved solids
When the amount of dissolved solids in a sample (e.g., in waste or sea water, metallurgical digests) rises above a certain level (typically >3%), either the sample needs to be diluted or specific sample introduction components, which have a high solids tolerance, need to be used for analysis.
A typical high-solids sample introduction system is comprised of a parallel path nebulizer and wide bore torch center tube to prevent blockage due to crystallization of salts, either at the tip of the nebulizer or at the center tube. A baffled spray chamber is also used to reduce the matrix load (the amount of sample transported to the plasma) on the plasma.