Discussion
What does a matrix modifier achieve?
Answer: B
A modifier such as palladium or magnesium nitrate either stabilises a volatile analyte so it survives a hotter ash, or makes the matrix more volatile so it leaves sooner. Volume, cooling and background correction are separate matters. Widening the window between two competing requirements, rather than compromising within it, is what a modifier does, and it is why furnace methods so often specify one. A limit that survives making every external component ideal is an intrinsic one, and worth knowing for that reason.
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