29853
Chromatographic separation was performed on an Acquity UPLC with Agela C18 column , and the solvents of 5 mM ammonium acetate ( pH 7 . 8 ) - acetonitrile ( 65 : 35 , v / v ) were used as mobile phase for elution .
 Chemical: ammonium acetate; Chemical: acetonitrile
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ammonium acetate; Chemical: acetonitrile