You have two alternatives. You can dilute the sample or use a less sensitive arsenic line. The arsenic 197.3 nm line, for example, is two times less sensitive. However, you choose to dilute the sample, since this will also lessen any matrix effects. After dilution, you observe the peak shape shown at the left. While you have eliminated the Zeeman reversal, your absorbance has still not returned to baseline after the atomization step is completed.

What approach to you take to resolve this problem?

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