6578
The performance of these modified electrodes was evaluated and compared to bare GCE by cyclic voltammetry experiments and by flow injection analysis ( FIA ) with amperometric detection monitoring the response of gallic , caffeic , ferulic and p - coumaric acids in 0 . 050 M acetate buffer pH 4 . 5 containing 100 mM NaCl .
 Chemical: gallic , caffeic , ferulic and p - coumaric acids; Chemical: acetate; Chemical: NaCl
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: gallic , caffeic , ferulic and p - coumaric acids; Chemical: acetate; Chemical: NaCl