What might be the cause if unusually high background levels are observed across the spectrum?

Match the number with the part it identifies on the MP-AES:

Which subsystem most directly controls conversion of liquid sample into aerosol for plasma introduction?

Although organic compounds make up only a small percent of the Earth’s crust, they are of central importance because all known life is based on organic compounds.

Which observations support “uptake instability” as a drift cause? (select all that apply)

Standards, blanks, and unknowns should be prepared in a consistent acid matrix (commonly 2–5% HNO₃) to keep metals dissolved and reduce precipitation/clogging risk.

Which of the following is used to produce the plasma in MP-AES?

Due to carbon’s ability to ___________ (form chains with other carbon atoms), millions of organic compounds are known. 

The MP-AES instrument requires a warm-up time of ______ minutes for optimum performance.

A peak between 1680-1640 cm⁻¹ is often associated with the stretching vibration of a __________ group.