Question

If you had to measure the amount of sulfur dioxide coming out of a volcano, what instrument would you use

Answer 1

You would use a correlation spectrometer.

Answer 2

COSPEC (correlation spectrometer)

Step-by-step explanation:

A correlation spectrometer (COSPEC) is designed to measure the amount of sulfur dioxide in a passing air mass (or volcanic plume). The spectrometer compares the amount of solar ultraviolet light absorbed by sulfur dioxide in the plume to an internal standard. Originally this instrument was developed in Canada during the 1960's to measure the pollution of power plant smokestacks