They evaluate any salts in a mixture (8)
I believe the answer is:
analysts
'they evaluate' is the definition.
The definition suggests an adverb but the answer is not.
'any salts in a mixture' is the wordplay.
'in a mixture' indicates anagramming the letters.
'any'+'salts'='anysalts'
'anysalts' is an anagram of 'ANALYSTS'.
Can you help me to learn more?
(Other definitions for analysts that I've seen before include "psychiatrists" , "shrinks" .)