During wavelength calibration, the instrument performs torch alignment plus calibration and a calibration check automatically. If it fails, first suspect:

Why run solutions blank → low → high?

A “good” calibration set should show:

The MP-AES requires flammable gases for plasma operation.

What can be said about a spectrum for acetic acid if a peak is found in the range of 1650-1580? (i.e. the compound is identified to be acetic acid but there is a peak in this range)

Why is it necessary to use a calibration curve in MP-AES analysis?

In the FT-IR spectrum, the peak for the C=O stretch of an aldehyde or ketone typically appears around __________ cm⁻¹.

When preparing nitric acid solutions, you should always add acid to water, not the reverse.

When using a nitrogen generator, a purge time up to ____ minutes may be needed to reach required nitrogen purity.

A sharp feature near ~2350 cm^-1 often indicates ________ interference from the atmosphere.